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Specific Use - Blind End Keylocking Threaded Inserts
Lightweight - Inch

Material: Inserts - 303 CRES
  Keys- 302 CRES
Finish: Passivated
Tolerances: ±.010 inch unless specified otherwise
Internal Threads: Per SAE AS8879
Dimensions: All dimensions below are in inches
Keys: Inserts with an internal thread size of 5/16 and larger are furnished with 4 locking keys. Smaller sizes have 2 locking keys.
Material Identification Mark: None
Lubrication: Dry Film Lube on Self-Locking Inserts only
Performance: MIL-I-45914A
 

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Insert Installation/
Removal
ACME Part Number Dimensions
Non-Locking Self-Locking Internal
Thread
Class 3B
External
Thread (Mod.)
Class 2A
F
Internal Thread (Min.)
G
External Thread
H Length J ±.030 K C'Bore Depth
Install Tool
Part No.
218-083321 218-084321 10 - 24 5/16 - 18 .31 .31 .50 .22 .07 217-072568
218-083521 218-084521 10 - 32
218-083322 218-084322 1/4 - 20 3/8 - 16 .37 .37 .62 .22 .07 217-072570
218-083522 218-084522 1/4 - 28
218-083323 218-084323 5/16 - 18 7/16 - 14 .43 .43 .75 .22 .07 217-072572
218-083523 218-084523 5/16 - 24
218-083324 218-084324 3/8 - 16 1/2 - 13 .50 .50 .81 .24 .07 217-072574
218-083524 218-084524 3/8 - 24
218-083325 218-084325 7/16 - 14 9/16 - 16 .56 .56 .87 .27 .07 217-072576
218-083525 218-084525 7/16 - 20
218-083326 218-084326 1/2 - 13 5/8 - 11 .62 .62 1.06 .28 .07 217-072578
218-083526 218-084526 1/2 - 20



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