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Specific Use - Floating Keylocking Threaded Inserts
Heavy Duty - Inch

Material: Inserts - 4140 Alloy Steel (160 KSI Min)
  Keys and Retaining Rings - 302 CRES
Finish: Cadmium Plate (QQ-P-416 Type II, Cl. 2)
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: Two lines on top of insert
Lubrication: Dry Film Lube on Self-Locking Inserts only
 

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Insert Installation/
Removal
ACME Part Number Dimensions
Non-Locking Self-Locking Internal
Thread
Class 3B
External
Thread
Class 2A
F
Internal Thread Lgth
H
Length ±.015
K Dist. to 1st Thd. (Approx) Min. C - C Float Install Tool
Part No.
218-089301 218-089501 10 - 24 7/16 - 20 .25 .40 .15 .040 218-082941
218-089401 218-089601 10 - 32
218-089302 218-089502 1/4 - 20 1/2 - 20 .25 .40 .15 .040 218-082942
218-089402 218-089602 1/4 - 28
218-089303 218-089503 5/16 - 18 5/8 - 18 .39 .53 .13 .040 218-082943
218-089403 218-089603 5/16 - 24
218-089304 218-089504 3/8 - 16 3/4 - 16 .45 .65 .20 .040 218-082944
218-089404 218-089604 3/8 - 24
218-089305 218-089505 7/16 - 14 7/8 - 14 .45 .67 .20 .040 218-082945
218-089405 218-089605 7/16 - 20
218-089306 218-089506 1/2 - 13 1" - 12 .50 .73 .23 .040 218-082946
218-089406 218-089606 1/2 - 20



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