FCH News

1/4-28 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.

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

Buy Key Locking Inserts from one of our FCH Network Members
SupplierLocTypeMaterialFinishSizeDescriptionQty 
CenturyFLKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-28 x 3/8nas1394c4l 54
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HayesCAKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-28 x 3/8nas1394c4l 1/4-28 x 3/8-16 key lkd insert ss44
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OlanderCAKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-28 x .371/4-28 x .37 kylk ins 1/2-13 303sst () ()16
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OlanderCAKey Locking Insert (Keensert, Keysert etc.)1/4-28 x .3751/4-28 x .375 locking kylk ins 3/8-16 4140 () ()32
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OlanderCAKey Locking Insert (Keensert, Keysert etc.)1/4-28 x .401/4-28 x .40 flting knsert 1/2-20 () ()2
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SWACOOHKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-28 x 7/16ms51831-202l keylock insert50
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)1/4-28 x 3/8 161/4-28x3/8-16 tw-csinquire
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)1/4-28 x 7/16 141/4-28x7/16-14 hd-csinquire
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-28 x 3/8 161/4-28x3/8-16 tw-ssinquire
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-28 x 7/16 141/4-28x7/16-14 hd-ssinquire
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CenturyFLKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-28ms51830-202 321
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CenturyFLKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-28ms51831-202 8
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CenturyFLKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-28 x 7/16 14ms51831-202l 4
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CenturyFLKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-28ms51830-202l 111
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BHAMALKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-28keensert MS51830-202L4
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BHAMALKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-28keensert MS51830-202L4
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LibertyILKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-281/4-28 unjf-3b insert key locked to ms51830-202l5
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SWACOOHKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-28ms51830-202 insert45
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AIHAZKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-28insert MS51830-20230
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RapidNYKey Locking Insert (Keensert, Keysert etc.)SteelPassivated1/4-28insert screw thread locked-in cres 303 .250-28 unjf-3b x .375 lg. passivated MS51830-202L10
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QCSORKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-281/4-28 int x 3/8-16 ext solid insert ss ms51830-20250
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