FCH News

1/4-20 Key Locking Inserts

Key Locking Inserts, also commonly known by their trade-names Keensert®, Keysert®, Loksert®, etc., are internally and externally threaded inserts with vertical keys attached to the top on the insert. They are installed by being screwed into a pre-drilled and pre-tapped hole, and during installation the keys are driven into the tapped threads of the parent to provide a positive mechanical lock. They are used to repair stripped or damaged threads or to provide reinforcement in a weak parent material.

27 results, (click on any line for more information)

Buy Key Locking Inserts from one of our FCH Network Members
SupplierLocTypeMaterialFinishSizeDescriptionQty 
HayesCAKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/8-161/4-20 x 3/8-16 lock keylock insert 18-8ss dfl10
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HewesNYKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/81/4-20x 3/8 insert 303 s/sless nylon patch10
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OlanderCAKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x .371/4-20 x .37 locking knsert 1/2-13 303sst () ()3
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OlanderCAKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x .371/4-20 x .37 kylk ins 3/8-16 303sst dfl () ()909
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OlanderCAKey Locking Insert (Keensert, Keysert etc.)Superalloy (Inconel, Hastelloy, Alloy 20)Plain1/4-20 x .371/4-20 x .37 locking kylk ins 3/8-16 a286 () ()199
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EndriesWIKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 7/16-141/4-20x7/16-14 keensert 18-8 3043
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HayesCAKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 7/16-141/4-20 x 7/16-14 lock keylock ins 18-8ss dfl381
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ManscoMIKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 7/16-141/4-20 x 7/16-14 heavywall keysert s.s.129
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Bostwick INKey Locking Insert (Keensert, Keysert etc.)1/4-20 x 7/16-14 x .371/4-20 x 7/16-14 x .37 hvy duty keysert6
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)1/4-20 x 7/16 141/4-20x7/16-14 hd-cs10
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/8 161/4-20x3/8-16 tw-ss30
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 7/16 141/4-20x7/16-14 hd-ss100
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RCFastAZKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Passivated1/4-20ms51831-102 insert, screw thrd, 1/4-20, 7/16-14 x 3/8l ss84
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)1/4-20 x 3/8 161/4-20x3/8-16 tw-cs175
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AbabaCAKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-201/4-20 i.d. x 7/16-14 o.d. heavy duty stl keyserts (#73042)15
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CenturyFLKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-20ms51831-102l 307
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CenturyFLKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20ms51830-106 insert scr thd(keylkd) .250-20 x .375l cres (INSERTSCR THD(KEYLKD) .250-20 X .375LCRES) (INSERT SCR THD(KEYLKD) .250-20 X .375L CRES) 42
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CenturyFLKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-20ms51830-106l 10
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CenturyFLKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Passivated1/4-20ms51831-102 13
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GlobalCAKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20ms51830-106 locking insert military ss/pa 1/4-20 thd internal x 0.370 l x 3/8-16 external thin wall 1/4-20 thd internal x 0.370 l x 3/8-16 external thin wall 1/4-20 thd internal x 0.370 l x 3/8-16 external thin wall25
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AIHAZKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-20insert s/s MS51830-106L2
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AIHAZKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-20insert screw-thread MS51830-1061
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AIHAZKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Passivated1/4-201/4-20 insert 304ss MS51831-1024
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AIHAZKey Locking Insert (Keensert, Keysert etc.)Superalloy (Inconel, Hastelloy, Alloy 20)Plain1/4-201/4-20 locking insert nitronic 6050
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AIHAZKey Locking Insert (Keensert, Keysert etc.)Superalloy (Inconel, Hastelloy, Alloy 20)Plain1/4-201/4-20 locking insert nitronic 6050
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SWACOOHKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-20ms51831-102l locking insert 1/4-2027
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SWACOOHKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Passivated1/4-20ms51831-102 1/4-20 insert 304ss500
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