FCH News

1 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.

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

Buy Key Locking Inserts from one of our FCH Network Members
SupplierLocTypeMaterialFinishSizeDescriptionQty 
EndriesWIKey Locking Insert (Keensert, Keysert etc.)Superalloy (Inconel, Hastelloy, Alloy 20)Plain14602t 10-32 x .19014602t 10-32x.190 nitronic locking insert49
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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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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.)Plain1/4-20 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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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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OneMonroeNCKey Locking Insert (Keensert, Keysert etc.)Plain1/4-20 x 7/16-141/4-20 x 7/16-14 x 1 e-z lock insert10
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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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OneMonroeNCKey Locking Insert (Keensert, Keysert etc.)Plain1/4-20 x 1/2-131/4-20 x 1/2-13 extra heavy wall e-z lock insert20
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Alma BoltMIKey Locking Insert (Keensert, Keysert etc.)Plain1/2-13 x 1/2-2064726 1/2-13-1/2-20 | keensert tool for thin wall2
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OneMonroeTXKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/2-13 x 5/8-11insert non-locking 1/2-13x5/8-11 steel3
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AbabaCAKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/2-13 x 5/81/2-13 i.d. x 5/8-11 o.d. thinwall stl keyserts10
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OneMonroeTXKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/2-13 x 5/8insert solid light wt. 1/2-13 s/s ms51830-1101
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OlanderCAKey Locking Insert (Keensert, Keysert etc.)1/2-20 x .621/2-20 x .62 kylk ins 3/4-16 carbon () ()50
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OlanderCAKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x .621/2-13 x .62 kylk ins 3/4-16 303sst () ()119
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OlanderCAKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/2-13 x 5/81/2-13 keensert 5/8-11 thd 303 ss ()53
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SWACOOHKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/2-13 x 5/8insert screw thread key-locked ms51830-110801
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HayesCAKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 11/16-111/2-13 x 11/16-11 lock keylock ins 18-8 ss dfl16
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OlanderCAKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x .681/2-20 x .68 knsert 13/16-16 303sst () ()9
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OlanderCAKey Locking Insert (Keensert, Keysert etc.)1/2-13 x .681/2-13 x .68 kylk ins 11/16-11 nit60 () ()337
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OlanderCAKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x .37 locking keensert 3/8-16 303sst20
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AbabaCAKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/2-13 x 3/41/2-13 i.d. x 3/4-16 o.d. heavy duty stl keyserts5
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SRFALKey Locking Insert (Keensert, Keysert etc.)1/2-13 x 1.01/2-13 x 1.0 locking insert-
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OlanderCAKey Locking Insert (Keensert, Keysert etc.)SteelPlain1-14 x 1.371-14 x 1.37 kylk ins 1 3/8-12 carbon stl () ()39
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EndriesWIKey Locking Insert (Keensert, Keysert etc.)1 1/4-7 x 1 5/8-121 1/4-7x1 5/8-12 keysert4
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OlanderCAKey Locking Insert (Keensert, Keysert etc.)1 1/4-7 x 1.811-1/4-7 x 1.81 kylk ins 1-5/8-12 () ()10
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AbabaCAKey Locking Insert (Keensert, Keysert etc.)1/4 x 61/4 & m6 keysert installation tool (#72250)2
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SWACOOHKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-28 x 86insert screw thread key-locked ms51830ca202l10
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AbabaCAKey Locking Insert (Keensert, Keysert etc.)1/2 x 121/2 & 9/16 & m12 keysert installation tool (#72500)2
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)1/4-20 x 7/16 141/4-20x7/16-14 hd-cs54
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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-ss162
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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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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)1/2-13 x 5/8 111/2-13x5/8-11 tw-cs80
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 5/8 111/2-13x5/8-11 tw-ss75
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 3/4 161/2-13x3/4-16 hd-ss80
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)1-8 x 1 3/8 121-8x1 3/8-12 hd-csinquire
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1-8 x 1 3/8 121-8x1 3/8-12 hd-ssinquire
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)1 1/8-7 x 1 1/2 121 1/8-7x1 1/2-12inquire
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)1 1/4-7 x 1 5/8 121 1/4-7x1 5/8-12 hd-csinquire
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)1 1/2-6 x 1 7/8 121 1/2-6x1 7/8-12 hd-csinquire
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)1/4-28 x 3/8 161/4-28x3/8-16 tw-cs30
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)1/4-28 x 7/16 141/4-28x7/16-14 hd-cs100
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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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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)1/2-20 x 5/8 111/2-20x5/8-11 tw-cs80
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)1/2-20 x 3/4 161/2-20x3/4-16 hd-csinquire
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 5/8 111/2-20x5/8-11 tw-ssinquire
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 3/4 161/2-20x3/4-16 hd-ssinquire
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)1-12 x 1 3/8 121-12x1 3/8-1210
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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-cs372
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)1/2-13 x 3/4 161/2-13x3/4-16 hd-cs50
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Jay-CeeMIKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 extra hvy duty threaded insert keensert (1/4-20id 1/2-13od 3/8long) s/sinquire
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METRO INDOHKey Locking Insert (Keensert, Keysert etc.)SteelPlain13m5 x 8-1.25 keysert thin wall din 13 carbon steel36
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METRO INDOHKey Locking Insert (Keensert, Keysert etc.)SteelPlain13m8 x 12-1.25 keysert thin wall din 13 carbon steel50
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METRO INDOHKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain13m12 x 16-1.5 keysert thin wall din 13 s/s3
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METRO INDOHKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain13m8 x 12-1.25 keysert thin wall din 13 s/s77
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METRO INDOHKey Locking Ins ert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain13m12-1.25 x 16-1.5 keysert thin wall din 13 s/s3
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METRO INDOHKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-201/4-20 keysert hd carbon steel16
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METRO INDOHKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-201/4-20 keysert hd s/s12
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METRO INDOHKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-201/4-20 keysert thin wall carbon steel8
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AbabaCAKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/2-201/2-20 i.d. x 5/8-11 o.d. thinwall stl keyserts (#74081)25
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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)10
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RCFastAZKey Locking Insert (Keensert, Keysert etc.)1/21/2 ez lock 40/502000
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OneMonroeNCKey Locking Insert (Keensert, Keysert etc.)Plain1/2-201/2-20 thinwall k-type insert30
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EndriesWIKey Locking Insert (Keensert, Keysert etc.)SteelZinc/Clear1/2-131/2-13 grade g nylon insert flange locknut tri clear zinc 96 white rust3873
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CenturyFLKey Locking Insert (Keensert, Keysert etc.)103ms51830ca103 37
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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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MidStatesMIKey Locking Insert (Keensert, Keysert etc.)SteelPlain1-12 x 1 3/8 121-12x1-3/8-12 hvy keensert5
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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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JacksonMSKey Locking Insert (Keensert, Keysert etc.)Nylon (Polyamide)Zinc/Clear1 3/4-121 3/4-12 nf heavy insert nu series lock n ut23
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EurolinkSCKey Locking Insert (Keensert, Keysert etc.)1m10-1.5 keensert ( thinwall )inquire
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EurolinkSCKey Locking Insert (Keensert, Keysert etc.)1m6 -1.00 keensert (thinwall)inquire
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QFCTXKey Locking Insert (Keensert, Keysert etc.)BrassPlain1/4-20131/4-2013m brass insert type ki45
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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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EndriesWIKey Locking Insert (Keensert, Keysert etc.)SteelZinc/Yellow1/2-201/2-20 grade f nylon insert flange locknut yellow zinc650
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EndriesWIKey Locking Insert (Keensert, Keysert etc.)Plain12378 5/16-1812378 5/16-18 keensert (box of 4)8
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EndriesWIKey Locking Insert (Keensert, Keysert etc.)SteelZinc/Yellow1/2-201/2-20 grade f nylon insert flange locknut yellow zinc650
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OlanderCAKey Locking Insert (Keensert, Keysert etc.)Superalloy (Inconel, Hastelloy, Alloy 20)Plain1012-56 x .12 kylk ins 8-32 a286 sst () ()26
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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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AIHAZKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-28insert MS51830-20230
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SWACOOHKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-28insert screw thread key-locked ms51830-20265
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AIHAZKey Locking Insert (Keensert, Keysert etc.)SteelPlain104insert screw-thread MS51830CA1046
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BossardAZKey Locking Insert (Keensert, Keysert etc.)SteelPlaininsert-non locking ms51830-2021
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SWACOOHKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20insert screw thread key-locked ms51830-1066753
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SWACOOHKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13insert screw thread key lock heavy duty ms51831-106100
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CenturyFLKey Locking Insert (Keensert, Keysert etc.)SteelPlain109ms51831a109 insert14
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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 thread(keylkd) .250-20 x .375l cres14
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SWACOOHKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Passivated1/4-20insert screw thread key lock heavy duty ms51831-1025232
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SWACOOHKey Locking Insert (Keensert, Keysert etc.)SteelPlain1/4-20insert screw thread key lock heavy duty ms51831-102l7
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CenturyFLKey Locking Insert (Keensert, Keysert etc.)Plain1/2-13keensert knh813j 1/2-13 11/16-11 thread10
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OlanderCAKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 keensert 3/8-16 thread 303 ss locking4
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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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CenturyNYKey Locking Insert (Keensert, Keysert etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plainms51830-106 insert scr thread(keylkd) .250-20 x .375l cres42
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CenturyNYKey Locking Insert (Keensert, Keysert etc.)Plainkeensert knh813j 1/2-13 11/16-11 thread10
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CenturyNYKey Locking Insert (Keensert, Keysert etc.)SteelPlainms51831a109 insert14
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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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Alma BoltMIKey Locking Insert (Keensert, Keysert etc.)Plain1/2-20#17532 1/2-20 keen sert 5/8 od | au-ve-co part5
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