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Specific Use - Blind End Keylocking Threaded Inserts
Heavy Duty- 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.
218-083300 218-084300 8 - 32 5/16 - 18 .31 .31 .50 .22 .04 217-072590
218-083301 218-084301 10 - 24 3/8 - 16 .31 .31 .56 .22 .07 217-072591
218-083501 218-084501 10 - 32
218-083302 218-084302 1/4 - 20 7/16 - 14 .37 .37 .62 .22 .07 217-072593
218-083502 218-084502 1/4 - 28
218-083303 218-084303 5/16 - 18 1/2 - 13 .43 .43 .75 .22 .07 217-072595
218-083503 218-084503 5/16 - 24
218-083304 218-084304 3/8 - 16 9/16 - 12 .50 .50 .81 .25 .07 217-072597
218-083504 218-084504 3/8 - 24
218-083305 218-084305 7/16 - 14 5/8 - 11 .62 .62 1.00 .28 .10 217-072599
218-083505 218-084505 7/16 - 20
218-083306 218-084306 1/2 - 13 11/16 - 11 NS .68 .68 1.06 .28 .10 217-072601
218-083506 218-084506 1/2 - 20
218-083307 218-084307 9/16 - 12 13/16 - 16 .81 .81 1.25 .32 .10 217-072603
218-083507 218-084507 9/16 - 18
218-083308 218-084308 5/8 - 11 7/8 - 14 .87 .87 1.31 .33 .10 217-072605
218-083508 218-084508 5/8 - 18
218-083309 218-084309 3/4 - 10 1-1/8 - 12 1.25 1.25 1.75 .49 .10 217-072607
218-083509 218-084509 3/4 - 16
218-083310 218-084310 7/8 - 9 1-1/4 - 12 1.37 1.37 1.94 .49 .10 217-072609
218-083510 218-084510 7/8 - 14
218-083311 218-084311 1" - 8 1-3/8 - 12 1.50 1.50 2.12 .55 .10 217-072611
218-083511 218-084511 1" - 12



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