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MS/NAS Style - 4140 Alloy Steel Keylocking Threaded Inserts
Lightweight - 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: Inserts with an internal thread size of M6 and smaller are furnished with 2 locking keys. Larger sizes have 4 locking keys.
Material Identification Mark: Two lines on top of insert
Lubrication: Dry Film Lube on Self-Locking Inserts only
Performance: NA0148
 

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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 4H5H
External
Thread (Mod.)
Class 4h
H
Length
J
±.76
K
C'Bore
Depth
Install Tool
Part No.
NA0148-050 217-080351 NA0148E050 217-081351 M5x0.8 M 8x1.25 8.0 3.73 1.27 217-072651
217-080551 217-081551 M5x0.5
NA0148-060 217-080352 NA0148E060 217-081352 M6x1.0 M10x1.25 10.0 6.02 1.78 217-072652
217-080552 217-081552 M6x0.75
217-080353 217-081353 M8x1.25 M 12x1.25 12.0 6.28 1.78 217-072653
NA0148-080 217-080553 NA0148E080 217-081553 M8x1.0
217-080355 217-081355 M10x1.5 M14x1.5 14.0 6.46 2.29 217-072655
NA0148-100 217-080555 NA0148E100 217-081555 M10x1.25
217-080356 217-081356 M12x1.75 M16x1.5 16.0 6.46 2.29 217-072656
NA0148-120 217-080556 NA0148E120 217-081556 M12x1.25
* Thread Class on M 5 Internal Thread is 4H6H
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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