MS/NAS Style - 303 CRES Keylocking Threaded Inserts
Lightweight - Metric

Material:	Insert - 303 CRES
	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: None
Lubrication: Dry Film Lube on Self-Locking Inserts only
Performance: There is no National Aerospace Standard for Metric Keylocking Inserts manufactured from 303 CRES. The inserts are compliant with the other requirements of NA0147, NA1049, and NA0151 except for any references to the type of matrial or performance related to the material.

Call
800-323-5582
or email us at
acmemail@acmeindustrial.com
and a representative will
contact you shortly.

To request a quote, Click on the MS or Acme part number in the chart below.

Insert							Installation/ Removal
Non-Locking	Self-Locking	Dimensions
ACME Part Number		Internal Thread* Class 4H5H	External Thread Class 4h	H Length	J ±.76	K C'Bore Depth	Install Tool Part No.
217-076351	217-077351	M5x0.8	M8x1.25	8.0	3.73	1.27	217-072651
217-076551	217-077551	M5x0.5
217-076352	217-077352	M6x1.0	M10x1.25	10.0	6.02	1.78	217-072652
217-076552	217-077552	M6x0.75
217-076353	217-077353	M8x1.25	M12x1.25	12.0	6.28	1.78	217-072653
217-076553	217-077553	M8x1.0
217-076355	217-077355	M10x1.5	M14x1.5	14.0	6.46	2.29	217-072655
217-076555	217-077555	M10x1.25
217-076356	217-077356	M12x1.75	M16x1.5	16.0	6.46	2.29	217-072656
217-076556	217-077556	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