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MS/NAS Style - A286 CRES Keylocking Threaded Inserts
Lightweight - Metric

Material: Insert - A286 CRES (140 KSI Min)
  Keys- 302 CRES
Finish: Passivated
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: One line on top of insert
Lubrication: Dry Film Lube on Self-Locking Inserts only
Performance: NA0149
 

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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.
NA0149-050 217-078351 NA0149E050 217-079351 M5x0.8 M 8x1.25 8.0 3.73 1.27 217-072651
217-078551 217-079551 M5x0.5
NA0149-060 217-078352 NA0149E060 217-079352 M6x1.0 M10x1.25 10.0 6.02 1.78 217-072652
217-078552 217-079552 M6x0.75
217-078353 217-079353 M8x1.25 M 12x1.25 12.0 6.28 1.78 217-072653
NA0149-080 217-078553 NA0149E080 217-079553 M8x1.0
217-078355 217-079355 M10x1.5 M14x1.5 14.0 6.46 2.29 217-072655
NA0149-100 217-078555 NA0149E100 217-079555 M10x1.25
217-078356 217-079356 M12x1.75 M16x1.5 16.0 6.46 2.29 217-072656
NA0149-120 217-078556 NA0149E120 217-079556 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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