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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800-323-5582
or email us at
acmemail@acmeindustrial.com
and a representative will
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To request a quote, Click on the MS or Acme part number in the chart below.

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