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MS/NAS Style - 4140 Alloy Steel Keylocking Threaded Inserts
Miniature - Metric

Material: Insert - 4140 Alloy Steel (160 KSI Min)
  Keys- 302 CRES
Finish: Cadmium Plate (QQ-P-416 Type II, Cl. 2)
Tolerances: ±.25 mm unless specified otherwise
Internal Threads: Per Fed Std H28/21, MJ Form
Dimensions: All dimensions below are in millimeters
Keys: Miniature inserts are furnished with 2 locking keys
Material Identification Mark: Two lines on top of insert
Lubrication: Dry Film Lube on Self-Locking Inserts only
Performance: NA0146
 

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Insert Installation/
Removal
Non-Locking Self-Locking Dimensions
MS/NAS ACME Part Number MS/NAS ACME Part Number Internal
Thread
Class 4H6H
External
Thread
Class 4h
G
Thread
H
Install Tool
Part No.
NAS0146-020 217-080382 217-081382 M2x0.4 M4x0.7 2.20 3.00 217-072682
NAS0146-025 217-080383 217-081383 M2.5x0.45 M4.5x0.75 2.70 3.81 217-072683
NAS0146-030 217-080384 NAS0146E030 217-081384 M3x0.5 M5x0.8 3.10 4.25 217-072684
NAS0146-040 217-080386 NAS0146E040 217-081386 M4x0.7 M6x0.75 4.11 5.25 217-072686
For inserts with the following options, add the letter code shown to the end of the Acme part number:
S — Silver Plate per AMS 2410
SN — Silver Plate Only, No Dry Film Lube (Self-Locking Inserts Only
DFL — Dry Film Lube (Non-Locking INserts Only)
K — Self Broaching Keys



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