Inserts And Studs-Books Pdf

Inserts and Studs
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Keenserts Key type Inserts and Studs, Keenserts inserts and studs are. designed to provide high resistance, to torque out and pull out loads . The keys that are pre assembled onto, each fastener are driven down. through the threads of the parent, material mechanically locking it into. place These keys positively prevent, rotation due to torsion and vibration .
Keenserts inserts are available with, internal threads that are either free . running or come with locking devices, such as deformed threads Vespel Steels as well as Inconel X 750 and Both unified and metric products are. insert or beam lock Inserts are also Inconel 718 Nickel Chromium Alloys available Keenserts inserts and studs. available with the unique patented are covered by AS MS and NAS . Spiralock thread form which allows Variations of the standard insert standards . for a free running bolt installation include miniature lightweight heavy. Once the mating bolt preload is duty extra heavy duty floating blind Typical Keenserts applications include. applied Spiralock inserts will resist solid and hydraulic Variations of the fixed and rotary wing aircraft engines . the most severe transverse vibration stud design include shear load light gearboxes tracked vehicles accessory. weight and heavy duty Keenserts housings electronic packaging and. Keenserts studs provide a nut end inserts and studs are also available thread hole repair . thread designed to transfer high axial with self broaching keys for ease of. loads into weak base materials The installation into a hard parent material . stud or keyed end is installed into the, parent material thus eliminating the. need for removing or replacing a bolt , Keenserts inserts and studs are easy. to install using standard drills taps and, gages Alcoa Fastening Systems.
offers a wide selection, of manual and power installation and. removal tools , Both inserts and studs come in a. variety of materials including 303 , 304 A286 and 17 4 PH Corrosion. Resistant Steels along with Inconel, 718 Nickel Chromium Alloy 6Al 4V. Titanium 4140 Alloy Steel and Carbon, Steel Locking key materials consist of.
302 A286 and 420 Corrosion Resistant, 2, ALCOA Fastening Systems products are available from MARYLAND METRICS P O Box 261 Owings Mills MD 21117 USA. Features and Benefits of Tridair KEENSERTS Inserts. FEATURE Designed and manufactured by a well known and respected manufacturer of thread. repair parts Supplier to OEMs industrial maintenance military and all phases. of the aftermarket , BENEFIT No need to doubt its performance regardless of application . FEATURE Solid bushing with locking kees , BENEFIT Positive mechanical lock against rotation . FEATURE May be used in virtually any material aluminum magnesium cast iron cold rolled. steel and plastic , BENEFIT No restrictions on parent material . FEATURE High strength and reliability , BENEFIT Provides maximum pullout strength breaks grade 8 bolt .
FEATURE No special skill required to use KEENSERTS Inserts . BENEFIT Installation procedures can be learned in minutes . FEATURE Hole preparation with standard drill and tap . BENEFIT No special costly single purpose drills or taps required . FEATURE Inserted with fingers , BENEFIT No special prewinder tools required . FEATURE Impossible to cross thread during installation . BENEFIT Perfect installation every time , FEATURE Can be removed very simply when necessary . BENEFIT Permanently installed unless removal is required . FEATURE Prepared hole not affected when insert is removed . BENEFIT New insert can be installed in same hole . FEATURE No tang to break off after installation , BENEFIT No need to worry about metal piece falling into prepared hole . FEATURE Available in inch and metric sizes , BENEFIT One line for all types of threads . FEATURE Available in Thinwall 10 24 through 1 2 20 I D and Heavy Duty 8 32 through 1 3 4 12 I D . Special sizes quoted on request , FEATURE Also available in stainless .
BENEFIT One line for all applications , FEATURE Available for spark plug applications . BENEFIT Designed for both tapered and straight seats . Once you try Tridair KEENSERTS Inserts you ll never go back to any other insert . Tridair Products i, Maryland Metrics ph 410 358 3130 800 638 1830 fx 410 358 3142 800 872 9329 email sales mdmetric com web http mdmetric com. ALCOA Fastening Systems products are available from MARYLAND METRICS P O Box 261 Owings Mills MD 21117 USA. KEENSERTS Inserts Installation Guidelines, 1 Edge Distance. Boss Diameter 1 1 2 x O D of insert , Edge distance to a flat side Can be as little as 1 32 over 1 2 O D of the insert Tap. marks may show on flat side and the insert should be positioned with kees 45o to 90o. 2 kees , 2 Broaching, General material harder than RC 30 may require that the tapped holes be broached.
for the kees Aluminum anodized after tapping also may require broaching Broach. blades may not stand up for more than 3 or 4 holes when broaching inconel and. similar alloys It is possible to drive kees of the KNH and KNHXH series in harder. material than the KN series because of wall collapse Tools with threads to support. to the inside of the insert are available if wall collapse is encountered . 3 Thickness of Parent Material, Miniature KEENSERTS Inserts 015 minimum thicker than the length of the insert if it is. undesirable to have it protrude through underside of panel T dimension. from catalog 015 if protrusion through underside is permissible . KN KNH and KNHXH KEENSERTS Inserts General minimum thickness should be equal. to bolt diameter Tridair Engineering should be consulted for these applications Insert. will protrude through bottom surface unless length is coded . 4 Internal Thread Lock, All our internal thread locks conform to MIL N 25027 . MIL N 25027 does not call for seating the bolt , We test with minimum P D 3A bolts 2A bolts being smaller will provide very little or no. torque and should not be used Bolts should have 4 turns after encountering the lock . Less turns may not provide the required torque and more turns will wear out the lock faster . For a metric thread a 4H Class bolt is used to test locking feature . Seating the bolt will affect the locking torque and the number of locking cycles How it will. be affected depends on the material of the bolt and the insert the finish on bolt and insert . lubrication on the threads and under the head of the bolt and the seating torque . 5 Standard Minor Diameter Versus Modified Minor, All other things being equal standard minor diameters will provide greater shear engagement. areas This would be desirable where a bolt goes directly into a tapped tole In the case of. inserts where the O D of the insert is so much larger than the diameter of the bolt being. used using a larger tap drill as we do does not lower the pullout values to any great extent . Tridair Products ii, Maryland Metrics ph 410 358 3130 800 638 1830 fx 410 358 3142 800 872 9329 email sales mdmetric com web http mdmetric com.
ALCOA Fastening Systems products are available from MARYLAND METRICS P O Box 261 Owings Mills MD 21117 USA. KEENSERTS INSERTS AND STUDS, KEENSERTS Inserts and Studs provide strong permanent lengths materials and types Because of our years of appli . metal threads in virtually any material ferrous non fer cation experience we are geared to provide solutions to all. rous or non metallic types of special insert problems If you don t see a design in. this catalog that will suit your application consult our Sales. Tridair pioneered the design of this type of insert and is Engineer for other designs to meet your specific needs . able to offer the widest available choice of standard sizes . Positive mechanical lock against rotation , Securely. locked, against, rotation , KEES are driven down into the tapped threads of the parent material Internal thread lock feature available . during installation to securely lock the insert against rotation Inserts with this feature are designed to securely. lock a bolt when it is entered into the insert only. Featuring an exclusive external thread design KEENSERTS provide a few turns The locking torque values are. maximum pull out strength with a minimum outside diameter consistent and well within the range established. by MIL I 45914A , Even after repeated installations and removals. n Installed with standard taps and drills of the bolt the lock maintains sufficient locking. torque to prevent the bolt from vibrating out , n Available from stock in many sizes and types .
PULL OUT STRENGTH For Reference Purposes Only NOTES . To compute the Pull Out Strength in any parent material Inserts MIL I 45914 as amended 25 Nov 1970 has been. use the following formula superseded by MIL I 45914A dated 25 Apr 1991 Any reference to. MIL N 25027 is to be disregarded The tests and methods are all. Minimum Shear Minimum Ultimate covered in MIL I 45914A . Calculated Engagement X Shear Strength of, Pull Out Strength Area IN2 the Parent Material Studs MIL S 45915 dated 25 Nov 1970 has been superseded by. PSI MIL S 45915A dated 21 Aug 1991 , ABOUT SHEAR ENGAGEMENT AREA. Catalog values for shear engagement areas are based on shear. failure in the parent material when the parent material is significantly. weaker than the insert or stud material Such failure occurs in the. parent material at or near the major diameter of the insert or stud. end external thread For parent materials of hardness similar to that. of the insert or stud failure occurs by combined shear of both. materials simultaneously and will occur along a surface approaching. the pitch line The calculated shear engagement area should be. reduced accordingly For sufficiently hard parent materials failure. may occur by thread shear at the internal thread of the insert or by. stud nut end thread failure , Tridair Products 1. Maryland Metrics ph 410 358 3130 800 638 1830 fx 410 358 3142 800 872 9329 email sales mdmetric com web http mdmetric com. ALCOA Fastening Systems products are available from MARYLAND METRICS P O Box 261 Owings Mills MD 21117 USA. SECTION, SELECTOR GUIDE INDEX, PAGE, NO , INSTALLATION. 1 4, 2 5 10 CROSS REFERENCE INDEX Part No MS and NAS Equivalents Decimal Equivalents .
3 11, 12, GENERAL PURPOSE INSERTS, Miniature Inserts For use in electronic and aerospace. applications where size and weight are critical , 13 15 Lightweight Heavy Duty and Extra Heavy Duty Inserts . A wide choice of sizes lengths and materials suit virtually. any requirement , 16 Carbon Steel Inserts These inserts offer the designer a. commercial version of our NAS MS KEENSERTS at a more. economical price , 4 17, 18, SPECIAL PURPOSE INSERTS. Floating Inserts Compensate for misalignment automatically Ideal. for use on curved surfaces or for use with flathead screws . 19 Blind End Inserts Where it is important to keep a screw isolated. from certain assemblies , 20 21 Hydraulic Inserts For complete port protection in hydraulic or fuel.
systems , 22 High Strength Aluminum Inserts For miniaturized space and. electronic systems , 22 Solid Inserts For relocating holes that have been drilled or. tapped in the wrong location to fill holes orsalvage expensive. castings , 23 Cast In Inserts For casting into place during die casting and. plastic molding operations , Tridair Products 2, Maryland Metrics ph 410 358 3130 800 638 1830 fx 410 358 3142 800 872 9329 email sales mdmetric com web http mdmetric com. ALCOA Fastening Systems products are available from MARYLAND METRICS P O Box 261 Owings Mills MD 21117 USA. SECTION, PAGE, NO , 5 25, 26, METRIC INSERTS, Miniature Series Inserts.
26 Lightweight Series Inserts, 27 Heavy Duty Series Inserts. Miniature Lightweight Heavy Duty, 28 Carbon Steel Inserts. These metric inserts are used in the same way and have the. same design features as General Purpose Inserts They. should be specified in applications wherever design dimen . sions are required in millimeters insteead of inches . 6 29, 30, GENERAL PURPOSE STUDS, Shear Load Series Studs AND Standards. 31 Lightweight Series Studs, 32 Heavy Duty Series Studs AND Standards. Offered in high performance materials to meet the requirements. of aerospace and military specifications Particularly suited for. high temperature cryogenic or high loading applications Shear Load Lightweight Heavy Duty. 7 33, 34, METRIC STUDS, Shear Load Series Studs.
34 Lightweight Series Studs, 35 Heavy Duty Series Studs. These metric studs are used in the same way and have the. same design features as General Purpose Studs They should Lightweight. be specified in applications wherever design dimensions are Metric Studs. required in millimeters instead of inches , 8 36 37. SELF BROACHING KEENSERTS , Self Broaching KEENSERTS . 38 TR28000 Series Studs, 39 TR29000 Series Inserts. BULK INSERTS AND KITS, 9 Test results, Tridair Products 3.
Maryland Metrics ph 410 358 3130 800 638 1830 fx 410 358 3142 800 872 9329 email sales mdmetric com web http mdmetric com. ALCOA Fastening Systems products are available from MAR. Edge distance to a flat side Can be as little as 1 32 over 1 2 O D of the insert Tap marks may show on flat side and the insert should be positioned with kees 45 o to 90o 2 kees 2 Broaching General material harder than R C 30 may require that the tapped holes be broached for the kees Aluminum anodized after tapping also may require

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