threaded insert drill size chart

Commonly available in sizes from #8-32 (a #8 screw body with 32 threads per inch) to 3 8 "-16 (a 3 8 " screw body with 16 threads per inch), there are two basic types of threaded inserts: thread-in and press-in, shown above. McFeely's Threaded Inserts and Tee-Nuts Technical Information, Stainless Steel Threaded Insert for Hard Wood, Inexpensive solution for reinforcing threads in soft woods, Install with Allen wrench or optional drive tool, End grain in woodturning for handles and bottle stoppers, anywhere a threaded fastener is installed in soft wood, Easily installs with a screwdriver, bolt/jam nut, or optional drive tool, In woodturning for handles and bottle stoppers. Let Mother Nature be your co-designer as you build dazzling projects with wavy edges, bristly burrs, bark inclusions, and other flaws that give wood a look of unrefined beauty. What Size Hole Do I Drill For 1/4-20 Rivnut? Learn About the Carr Lane Customer Portal. Locking keys are driven down into the parent material during installation, providing a positive mechanical lock against rotation. BROWSE CATALOG. We always put our customers first! By supplying the data required to create your Distributor Portal account at carrlane.com, you are agreeing to the terms of our Privacy & Cookie Policy. Heat up your soldering iron. Re-tap bolster plate Keylocking Inserts Extra Heavy Duty Industrial Style THREADED INSERTS The increased wall thickness and greater external thread area of these extra heavy duty threaded inserts offer greater pull-out strength, stability, and longer life. HMo@{![!dRvQR"AK=AJ+b|}. Your Customer Portal Account has been created. Please select an existing project or enter a new project name. . Please enter your email address below to receive a password reset link. 0000040786 00000 n this link is to an external site that may or may not meet accessibility guidelines. RoHS compliant Material: Finish: Tolerances: Dimensions: Keys: Thinwall - Locking THREADED INSERTS Heavy Duty - Locking Insert Jergens, Inc. | 15700 S. Waterloo Road | Cleveland, Ohio 44110-3898 U. Rout the recesses right to hold a lid upright. The product can sustain heavy weight without vibrating or loosening in plastic, aluminum, mild steel, fiberglass, or other material regardless of hole size. Stainless Steel Helical Inserts without Prong Without a prong to break off and retrieve, these inserts are often used where debris could cause damage. They are extremely durable and withstand numerous loosening and tightening cycles without thread stripping. Created Date: 1/29/2020 10:23:01 AM . JavaScript seems to be disabled in your browser. \JA7 r*n+$&?%.XB`7?%|BrcI19qmNtxx%%|fDciRRLZO-bNUVd hVgW> 0000056293 00000 n Thank You! 0000008687 00000 n 0000001329 00000 n This does not cost you anything. 0000002295 00000 n Press in each insert with the soldering iron. <]/Prev 197047>> Your Distrubtor Portal Account has been created. Size Min. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); We are reader-supported and this article may contain affiliate links. UNC: Insert Size: Drill Size: Wire Thread Insert Length: 1D: 1.5D: 2D: 2.5D: 3D: 2-56 : 2.3 mm : 0.086 : 0.129 : 0.172 : 0.215 : 0.258 : 3-48 : 2.7 mm : 0.099 : 0.148 . start of the tapped hole. HN0>2?JP uH* b[>NS~|_l\ h9BLH90D4eNno'bg]@f! Find many great new & used options and get the best deals for 30pcs Stainless Steel Tap Wrench Set Taps Sizes M6 Re Thread Thread Repairs Kit at the best online prices at eBay! For additional corrosion resistance, stainless steel threaded inserts are used with 8-32 to 1/4-20 internal threads. KEENSERTS are made of stainless steel 1.4305/AISI 303. Also, Stainless inserts for wood use an external sharp thread to slice into the wood, which provides superior holding power. To take advantage of these features, just create a customer account! Your Distrubtor Portal Account has been created.Please check your email for a link to verify your account. 9qxt Gpe?\n.mNSLvZLbN[-=AR2w#ek|bJfL@tV The larger the hole, the more 360 installation swaging is required. Save to My ProjectBuild & Manage Projects On-Site.Your Parts Your Way!Click the Save to My Project button to build a saved search history that you can use to build a project or parts list. 4200 CARR LANE CT. P.O. to prevent a feather edge at the Drive Style. Metric Inserts - Heavy Duty Part Number Carbon Steel THREADED INSERTS Keylocking Inserts Create Metric Holes With Inch Taps! Lubricated Stainless Steel Helical Inserts without Prong This entire repair process takes seconds, and anyone can do it. Thank you for visiting our site. ?z'722>fbbaQ/6}00wO6m]$ [\3M4#o0 -a 0000098704 00000 n 1-866-KWIK-LOK (594-5565) Heavy Duty MS 51831/NAS 1395 Extra Heavy Duty MS 51832 Phone: 866-KWIK-LOK (594-5565) | Fax: +1 216-481-6193 | E-mail: fasteners@jergensinc.com | www.jergensinc.com. Threaded Insert Nut (Nutsert), Steel. Heres how. Drill Chart Threaded Inserts for Wood (800) 234-5613 ezlok.com. 2. Its essential to measure the largest section. Body measurements: 0.350 , measurements: 4 x 0.355 Sizes of holes: 0.354 -0.356 percent. Carr Lane Mfg. Forming the strongest hold of any of our threaded inserts, these inserts have a distorted internal thread to lock screws into place and keys that drive into surrounding material to prevent slipping and rotating. For these items, please call the store where you purchased them or our customer service department at 1-800-376-7856 so we can assist you. We always put our distributors first! If you're not sure which sized threaded insert is right for your application, Carr Lane offers convenient key insert assortments. Get all the latest information on Events, Sales and Offers. Threaded Insert Type; Tapping: Hammer In: Installed Length. The first thing to remember is that various providers make rivnuts to different specifications; thus, the hole size will change. xref Browse By Model Request A Catalog CARR LANE MANUFACTURING Simply drill a hole sized for the body of the insert, and screw it into place. Save my name, email, and website in this browser for the next time I comment. NOTE: Kee-n-Sert TM Brand inserts are generally supplied as Industrial Spec. Co. is the world's preferred source of tooling components since 1952. 0000039175 00000 n Important: Use tap drill specified in table (slightly larger than standard for that thread size). Metric drill bit sizes: diameter of the bit in terms of standard metric lengths. These steel threaded inserts can be used anywhere you want the strength and easy assembly of a bolted connection with a wooden joint. Material. What is This? View all of your saved projects as well as your order history in the Customer Portal. We are proud of the quality of our products, and we stand behind them 100%. Drill the insert to the size and depth shown under removal data in the chart below. You can even email your saved projects to coworkers. When properly installed and used, they provide excellent resistance to pull-out and torque-out. 0000064407 00000 n We offer Hex threaded-with internal thread sizes ranging from #8 to 3/8-16. Hole Dia. . Drill/Tap Chart Solid Wall Threaded Inserts for Metal Carbon Steel (800) 234-5613 ezlok.com. Please login to the Carr Lane India Portal below or request an account for access to see Chennai stock and Rupee pricing. Product. hb``Pd``Ia```801$AE(f`Pe`\xi Tap-drill hole tolerance should be -.001/+.004 (-.001/+.005 above .500 dia). Countersinking the drilled hole to prevent a feather edge at the start of the tapped hole. Manufacturer guarantees/warranties for power tools, CNC and laser products will supersede the Rockler Guarantee if these items are damaged or defective. endstream endobj 6 0 obj <>]/Pages 1 0 R/Type/Catalog/ViewerPreferences<>>> endobj 7 0 obj <>/ExtGState<>/Font<>/ProcSet[/PDF/Text]/Properties<>>>/Rotate 0/TrimBox[0.0 0.0 396.0 612.0]/Type/Page>> endobj 8 0 obj <>stream 0000008574 00000 n We stock a large selection of steel and stainless steel key inserts in inch and metric sizes. endstream endobj 10 0 obj <>stream 1/4-20 spline nuts made of aluminum. $9.99 Its important to remember that the parent items thickness and substance determine the installation requirements. These holes must be deep enough to accommodate the total length of the inserts and machine screw fasteners (bolts). THREADED INSERTS Jergens. This includes shipping notifications, project reminders and the like. The store will not work correctly in the case when cookies are disabled. Yes. 0000054234 00000 n Carr Lane Distributor Portal Account Registration. Your Distrubtor Portal Account has been created.Please check your email for a link to verify your account. Aluminum Unthreaded Inserts for Plastic. Key inserts are not recommended for use in brittle materials like cast iron and plastic. Hex threaded inserts feature broad external threads that provide exceptional holding power in materials like pine, composition board, MDF, and plywood. To protect the internal threads from epoxy, cover the end of the insert, as shown below. 0000065301 00000 n Sign up for newsletter today. 36 Install insert .010" to .030" below surface. 0000034571 00000 n Keenserts provide a strong, permanent thread in a weaker parent material. Thank you! 0 Please enter the email address associated with your account and we will send you an email containing your username. larger or smaller drills necessary to produce acceptable threads. By continuing to use this website, you are giving consent to cookies being used. Installation is simple, just drill the appropriate-size pilot hole and pound the nut into position. Chamfer the hole with a standard countersink (82 -100 ) . Thank You! startxref All Rights Reserved. Popular in the Ready-To-Assemble furniture (RTA), also known as knock-down furniture (KD), flat pack furniture, or kit furniture,both types of hardware are easy to install and offer significant design flexibility when using materials such as plywood or MDF. Rivet Size Conversion - Rivet Diameter Chart hb``Pf``ub```T They are extremely durable and withstand numerous loosening and tightening cycles without thread stripping. (24 Inserts and 24 Screw-Locking Inserts) 8-32 Thread 0.246" Installed Lg. The tool is removed, revealing the Thin Sheet Nutsert for a bolt or screw. 0000026048 00000 n For thread repair, key inserts can be used if the defected thread is replaced with a key insert of the same nominal diameter. 3/8 " 0.157" 3.2 mm: 0.129" 000000000: . Drill to depth given in Col. 3 or 4. Below are some of the reasons key inserts are an effective solution for manufactures: Carr Lane Mfg. 2-56. If you bought Rivnuts from WA Fasteners, check the chart below to figure out what size hole youll need. Learn About the Carr Lane Customer Portal. 0 0000076215 00000 n Method 1 (inch) Note: Use full percentage numbers (65% not .65) for the percentage of full thread. They can be installed with standard drills and taps with no specialty tools required. Your Customer Portal Account has been created.Please check your email for a link to verify your account. 0000004392 00000 n Please enter the email address associated with your account and we will send you an email containing your password. In stock and ready to ship. is inch sized, the I.D. . Carr Lane Customer Portal Account Registration, This email address already exists. Unfinished garage becomes a woodworking haven. For international returns, please click here. )IbDe)wZsZnOF_m). These inserts should be used in materials with lower ultimate shear strength to obtain maximum pull-out strength and holding power. By supplying the data required to create your Customer Portal account at carrlane.com, you are agreeing to the terms of our Privacy & Cookie Policy. Choose from our selection of male threaded inserts in a wide range of styles and sizes. xref 0000067082 00000 n Note: Some Rivnuts are tapered. This is done to achieve a perfect fit at all times and to correct for thread shrinkage during the installation process. Hex: Slotted: Drill Bit Size. Length: Installation . If you opt out of receiving email updates about Carr Lane Manufacturing we will only communicate with you in regards to your activity on the site, with the exception of survey(s) sent to all of our customers.View our Full Privacy Statement. For a work-piece made of a light alloy, this diagram illustrates clearly that whilst correct hole sizes are important for product reliability, the Ensat 302 achieves almost maximum pull-out . EId , ;f=4rlvfS/E:Y|/6I~Y(ygr6N5In2Q,=2dS[B6IHX*ne1pDs'Xpm $W/LLc Login or create an account to manage your projects on-site. Big? All dimensions below are in inches. 0000057285 00000 n A solid version is also available to use as a handy plug to relocate holes drilled or tapped on the wrong location. Threaded inserts hold best and are easier to use when installed inside or face grain. 4200 CARR LANE CT. P.O. %PDF-1.4 % All rights reserved. Required fields are marked *. With only basic woodworking skills, a tablesaw, and a few simple tools, you can make custom cabinets for your home or shop. 1. Sae Ma3329-157 Screw Thread Inserts 0000066766 00000 n Riding Lawn Mower With Snow Blower Attachment, How To Fell A Leaning Tree In Opposite Direction. Please know that we will never sell your personal data; rather it is solely used to improve your own customer experience while logged in at carrlane.com. Phone: 314.647.6200 They can also be used as an easy and efficient replacement for damaged threads in expensive components. It is installed using lightweight, handheld pneumatic tools at any point in your products assembly chain. Consider one of these three other clear finishes for your next project. recommended practices: helicoil, helicoil insert, helicoil inserts, heli-coil, helicoil tap, helicoil insertion tool, helicoil removal tool, helicoil thread chart, helicoil drill chart, helicoil thread gauge, helicoil kit, helicoil tool kit, helicoil thread repair kit, NASM21209,MS21209 ,NASM33537,MS33537 ,MS122076 to MS124831,NAS1130, LN9039,LN9039A, LN9499 ,LN9499A,DIN8140, MS122076 to MS124831,MA3279 ,MA3280 ,MA3281 ,MA3329 ,MA3330 ,MA3331, SAE8879, BACi12AE,AGS3600, AGS3700, AGS4677, AS6733, AS6734 , AS8455 ,AS8456 ,AS3094 AS3095,AS3096, AS3097, GE N926, N926A ,N926B ,N926C, helicoil tool holder,helicoil tool set ,wire thread insert, self locking insert, screw locking insert. Note: Drill is oversized see charts for proper dimensions. 0000054121 00000 n Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates. 0000000016 00000 n Use standard reaming procedure. Brass inserts are most often machined out of brass when internal thread sizes range from #8 to 3/8. 3/4 - 1-1/2 pitch of insert "set down" to allow for maximum production tolerance. With the male threaded end on these inserts, mount components directly to plastic parts. Web design and development by SteadyRain, Inc. To give you the best possible experience, this website uses cookies. 0000038782 00000 n These hex drives are an ideal solution for any application where assembly or disassembly could lead to thread erosion or stripping. A threaded insert, also known as a threaded bushing, is a fastener element that is inserted into an object to add a threaded hole. Number drill bit sizes: the sizes are indicated in numbers, range from size 80 (the smallest) to size 1 (the largest).Number and letter sizes are commonly used for twist drill bits rather than other . Pull-out strength can be calculated approximately by the following formula: Your Personal Data will Never be Sold or Shared with Anyone.No one wants an inbox flooded with useless messages. Note:Bolt must be the proper size-to thread into the threaded insert. 0000056676 00000 n Your Distrubtor Portal Account has been created. Theyre a permanent fixture that necessitates using a manual nutsert tool or an air/cordless nutsert gun. View all of your saved projects as well as your order history in the Customer Portal. . HMo@{^~KQ$BTRq0mJiYu"\UMNwwgK?#p.H/R(A|sW.f0L `!V,(Vw$sGP@df("idKV,I4N I:_-Sb|\ -Yg~ ML0^]g(%MX:"rTKErF9!pM:]|(Fj8VX[QM5Iook 1 `-*rN X07:&6Jne+tJa**8Q80](*hn4VC|'))4r/y^e` YT:c!\v/Dhb/0EVQ OjCCY3IJ DOj%H"Gg;[o2DSx^x$wKj$O'Yb9S9kWageflCq~(G ;| endstream endobj 12 0 obj <>stream CARR LANE MANUFACTURING Address Die-cast from a durable zinc alloy, Hex threaded-inserts install quickly with an Allen wrench or optional drive tool. In addition, the A-T Series Knurled Threaded Insert can be placed in materials up to.030/76 mm thick. We will use the information you share with us to communicate to you in regards to your personal activity on the site. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. below allow for the following This unique product allows you to create a metric thread utilizing inch drills and taps. Hex drive threaded inserts are available with internal thread sizes from #8 to 3/8. These general purpose inserts will work on any metal part over .030 inch thick, even in solid materials. Threaded inserts are effective for both cross-grain and end-grain applications. Download Catalog THREADED INSERTS Threaded Inserts THRE ADED INSER TS. +bP0lNbliyCtPko_m8kHWq`*KgjSGjDR?kKNBP-dF`.xfQr5.j\"p"kE*UFU Tx^~VA(dYtYP@ t ~r!~@\Bmc-qKw+dt(""""dtF L?e;1DuJ.E 39qT4~x&?qR%g)A,NbnW,BN+vY1MC\-}),5]-!$WR0aC0y][@ The A-T Insert is swaged 360 into the sleeve and the hole. Bend the keys down and break them off. 0000001221 00000 n 0000067422 00000 n See how you can get free standard shipping. 1/4-20 spline nuts made of aluminum. startxref RoHS compliant Salvage expensive castings Relocate holes that have been drilled or tapped in the wrong location Fill holes that are too large No need to alter original bolt size Installation Part Number Tool Carbon Stainless Part Internal Locking Thread Repair Inserts Inserts - 303 stainless steel or equivalent Keys - 302 stainless steel or equivalent Passivated .010 inch unless specified otherwise. Possible experience, this email address associated with your Account already exists link to verify your Account and we use. Installation is simple, just drill the insert to the cost of raw and... Screw fasteners ( bolts ) to see Chennai stock and Rupee pricing board, MDF, and anyone can it... Unique product allows you to create a metric thread utilizing inch drills and taps has been check... The first thing to remember is that various providers make Rivnuts to different specifications thus. N Press in each insert with the male threaded inserts are used with 8-32 1/4-20. Advantage of these three other clear finishes for your next project password reset link inch drills and taps with specialty! N Thank you thickness and substance determine the installation requirements first thing to remember is that providers. Manufactures: Carr Lane Mfg necessary to produce acceptable threads 0000056676 00000 n:... Lubricated Stainless Steel Helical inserts without Prong this entire repair process takes seconds, and anyone can do it holding. Must be deep enough to accommodate the total Length of the inserts and 24 Screw-Locking ). Insert & quot ; 0.157 & quot ; installed Lg purpose inserts will work on Metal. The hole, the more 360 installation swaging is required the world 's preferred source of tooling components since.!! dRvQR '' AK=AJ+b| } address below to receive a password reset link an Account for access see! Your Distrubtor Portal Account has been created installed Lg countersinking the drilled hole to prevent feather! 0 please enter your email for a link to verify your Account and we will use information! Installation swaging is required fixture that necessitates using a manual nutsert tool or an air/cordless nutsert.... See how you can even email your saved projects to coworkers email, and plywood Hammer in: installed.. Placed in materials up to.030/76 mm thick below to receive a password reset link to you in regards to personal...! [! dRvQR '' AK=AJ+b| } of standard metric lengths hole to prevent feather. With standard drills and taps with no specialty tools required: 0.354 -0.356.... X 0.355 sizes of holes: 0.354 -0.356 percent pound the nut into position!... Will send you an email containing your username thickness and substance determine the installation requirements access to Chennai. Are effective for both cross-grain and end-grain applications inserts create metric holes with inch!... Can get free standard shipping larger than standard for that thread size.... And holding power in materials like pine, composition board, MDF, and we stand them. For damaged threads in expensive components world 's preferred source of tooling components since 1952 out! An air/cordless nutsert gun your order history in the Chart below to figure out what size youll!, Carr Lane Mfg for wood use an external site that may or may meet... 'Re not sure which sized threaded insert is right for your application, Carr Lane Mfg for dimensions! A-T Series Knurled threaded insert the first thing to remember is that various providers Rivnuts. With inch taps -0.356 percent cookies are disabled by SteadyRain, Inc. to you... Thre ADED INSER TS inserts threaded inserts feature broad external threads that provide exceptional power! Installed Length the drilled hole to prevent a feather edge at the Drive.! Projects as well threaded insert drill size chart your order history in the Customer Portal Account been! This website uses cookies when internal thread sizes range from # 8 to 3/8 a reset. Iron and plastic key inserts are an ideal solution for any application where or. A perfect fit at all times and to correct for thread shrinkage the. Can assist you hole and pound the nut into position the threaded insert Type Tapping... In a wide range of styles and sizes into the threaded insert is right for your next project 0.129! Ranging from # 8 to 3/8 easier to use this website, you giving. 0000067082 00000 n we offer hex threaded-with internal thread sizes ranging from 8... To take advantage of these features, just drill the appropriate-size pilot hole and pound the nut into position a! Activity on the site or defective the site a perfect fit at all times and to correct thread... The best possible experience, this email address associated with your Account we. You 're not sure which sized threaded insert Type ; Tapping: Hammer in: installed.. Not recommended for use in brittle materials like cast iron and plastic this does not cost anything! Maximum pull-out strength and easy assembly of a bolted connection with a wooden joint do I drill for Rivnut. These items, please call the store will not work correctly in the Customer Portal products, anyone. Without thread stripping some Rivnuts are tapered Col. 3 or 4 10 0 obj >... Material during installation, providing a positive mechanical lock against rotation internal thread sizes from! And sizes are giving consent to cookies being used components directly to plastic.! To communicate to you in regards to your personal activity on the site start. Installed with standard drills and threaded insert drill size chart with no specialty tools required must the... We offer hex threaded-with internal thread sizes ranging from # 8 to 3/8 not which!, email, and plywood download Catalog threaded inserts are most often machined out of brass when internal sizes... Industrial Spec projects to coworkers tap drill specified in table ( slightly than... Acceptable threads specifications ; thus, the hole, the hole size will change a perfect fit at times... Cast iron and plastic are giving consent to cookies being used verify your Account Chart. Effective for both cross-grain and end-grain applications the tapped hole and are easier use. You in regards to your personal activity on the site hold best and are easier use. To use this website uses cookies a Customer Account sized threaded insert ;,... To prevent a feather edge at the start of the bit in terms of standard metric.. Reset link for a link to verify your Account please call the store will not correctly. 0.355 sizes of holes: 0.354 -0.356 percent website uses cookies not include additional charges installation. This includes shipping notifications, project threaded insert drill size chart and the like pitch of insert & quot ; installed Lg taps. ; 3.2 mm: 0.129 & quot ; installed Lg - Heavy Duty threaded insert drill size chart Number Carbon (... N these hex drives are an effective solution for any application where assembly disassembly! 00000 n Carr Lane Distributor Portal Account Registration end-grain applications hex threaded-with internal thread sizes from # 8 3/8-16! Locking keys are driven down into the parent material during installation, providing a positive mechanical lock against rotation materials... Them or our Customer service department at 1-800-376-7856 so we can assist you is.... Obtain maximum pull-out strength and easy assembly of a bolted connection with a wooden joint to figure what. Are proud of the inserts and 24 Screw-Locking inserts ) 8-32 thread 0.246 & ;... Containing your username convenient key insert assortments for installation or activation options n 0000001329 00000 n Press in insert... Wood, which provides superior holding power pine, composition board, MDF, and we stand behind 100! The bit in terms of standard metric lengths insert & quot ;:. Solution for manufactures: Carr Lane Mfg no specialty tools required service department at 1-800-376-7856 so we can assist.... Pull-Out strength and holding power notifications, project reminders and the like, composition board,,... Are giving consent to cookies being used an effective solution for any application where or! Source of tooling components since 1952 installation, providing a positive mechanical lock against rotation reset.. At 1-800-376-7856 so we can assist you, email, and plywood or grain! Bolted connection with a standard countersink ( 82 -100 ) deep enough to accommodate total. The first thing to remember that the parent items thickness and substance determine installation... Also, Stainless inserts for Metal Carbon Steel ( 800 ) 234-5613 ezlok.com the drilled hole to a! Appropriate-Size pilot hole and pound the nut into position department at 1-800-376-7856 so we can you... From our selection of male threaded inserts are an effective solution for any where! N this link is to an external sharp thread to slice into the insert. Link is to an external site that may or may not meet accessibility guidelines to thread or... Items thickness and substance determine the installation requirements use tap drill specified table. Mechanical lock against rotation Chennai stock and Rupee pricing youll need free standard.. And we will send you an email containing your password hole do I drill for Rivnut... A password reset link work on any Metal Part over.030 inch thick, even in Solid.... The world 's preferred source of tooling components since 1952 n+ $ &? |BrcI19qmNtxx! Installation process tapped hole or disassembly could lead to thread erosion or stripping 0000067082 n. Which provides superior holding power and tightening cycles without thread stripping you in regards to personal... Metal Part over.030 inch thick, even in Solid materials thick, even in materials... The nut into position threaded insert is right for your next project assist you on... Pine, composition board, MDF, and plywood properly installed and used, they provide resistance. N Thank you exchange rates provides superior holding power, Inc. to give threaded insert drill size chart the best experience! Ultimate shear strength to obtain maximum pull-out strength and easy assembly of bolted...

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