You are Here:

Search AcmeIndustrial.com
for Mil Spec, ANSI or ACME part number



MS/NAS Style - 4140 Alloy Steel Keylocking Threaded Inserts
Heavy Duty- Inch

Material: Insert - 4140 Alloy Steel (160 KSI Min)
  Keys- 302 CRES
Finish: Cadmium Plate (QQ-P-416, Type II, Cl. 2)
Tolerances: ±.010 inch unless specified otherwise
Internal Threads: Per SAE AS8879
Dimensions: All dimensions below are in inches
Keys: Inserts with an internal thread size of 5/16 and larger are furnished with 4 locking keys. Smaller sizes have 2 locking keys.
Material Identification Mark: Two lines on top of insert
Lubrication: Dry Film Lube on Self-Locking Inserts only
Performance: MIL-I-45914A (MS51831& NAS1395)
 

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
MS/NAS ACME Part Number MS/NAS ACME Part Number Internal
Thread
Class 3B
External
Thread (Mod.)
Class 2A
H
Length
J
±.030
K
C'Bore
Depth
Install Tool
Part No.
NAS1395-08 217-080300 NAS1395-08L 217-081300 8 - 32 5/16 - 18 .312 .22 .04 217-072590
MS51831A101 217-080301 MS51831A101L 217-081301 10 - 24 3/8 - 16 .312 .22 .07 217-072591
MS51831A201
NAS1395-3
217-080501 MS51831A201L
NAS1395-3L
217-081501 10 - 32 217-072592
MS51831A102 217-080302 MS51831A102L 217-081302 1/4 - 20 7/16 - 14 .375 .22 .07 217-072593
MS51831A202
NAS1395-4
217-080502 MS51831A202L
NAS1395-4L
217-081502 1/4 - 28 217-072594
MS51831A103 217-080303 MS51831A103L 217-081303 5/16 - 18 1/2 - 13 .437 .22 .07 217-072595
MS51831A203
NAS1395-5
217-080503 MS51831A203L
NAS1395-5L
217-081503 5/16 - 24 217-072596
MS51831A104 217-080304 MS51831A104L 217-081304 3/8 - 16 9/16 - 12 .500 .25 .07 217-072597
MS51831A204
NAS1395-6
217-080504 MS51831A204L
NAS1395-6L
217-081504 3/8 - 24 217-072598
MS51831A105 217-080305 MS51831A105L 217-081305 7/16 - 14 5/8 - 11 .625 .28 .10 217-072599
MS51831A205
NAS1395-7
217-080505 MS51831A205L
NAS1395-7L
217-081505 7/16 - 20 217-072600
MS51831A106 217-080306 MS51831A106L 217-081306 1/2 - 13 11/16 - 11 NS .688 .28 .10 217-072601
MS51831A206
NAS1395-8
217-080506 MS51831A206L
NAS1395-8L
217-081506 1/2 - 20 217-072602
MS51831A107 217-080307 MS51831A107L 217-081307 9/16 - 12 13/16 - 16 .812 .32 .10 217-072603
MS51831A207
NAS1395-9
217-080507 MS51831A207L
NAS1395-9L
217-081507 9/16 - 18 217-072604
MS51831A108 217-080308 MS51831A108L 217-081308 5/8 - 11 7/8 - 14 .875 .33 .10 217-072605
MS51831A208
NAS1395-10
217-080508 MS51831A208L
NAS1395-10L
217-081508 5/8 - 18 217-072606
MS51831A109 217-080309 3/4 - 10 1-1/8 - 12 1.125 .10 217-072607
MS51831A209 217-080509 3/4 - 16 217-072608
MS51831A109L 217-081309 3/4 - 10 1.250 .49 217-072607
MS51831A209L 217-081509 3/4 - 16 217-072608
MS51831A110 217-080310 7/8 - 9 1-1/4 - 12 1.250 .10 217-072609
MS51831A210 217-080510 7/8 - 14 217-072610
MS51831A110L 217-081310 7/8 - 9 1.375 .49 217-072609
MS51831A210L 217-081510 7/8 - 14 217-072610
MS51831A111 217-080311 1" - 8 1-3/8 - 12 1.375 .10 217-072611
MS51831A211 217-080511 1" - 12 217-072612
MS51831A111L 217-081311 1" - 8 1.500 .55 217-072611
MS51831A211L 217-081511 1" - 12 217-072612
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



ISO 9001
Registered
Quality
System


Aerospace Industries
Association