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MS/NAS Style - 4140 Alloy Steel Keylocking Threaded Inserts
Miniature - 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: Miniature inserts are furnished with 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 (MS51830)

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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 3B
External
Thread
Class 2A
G
Thread
H
Install Tool
Part No.
217-080281 0 - 80 6 - 40 .085 .100 217-072550
217-080282 217-081282 2 - 56 6 - 40 .085 .100 217-072551
MS51830A101 217-080283 MS51830A101L 217-081283 2 - 56 8 - 32 .090 .120 217-072552
MS51830A102 217-080284 MS51830A102L 217-081284 4 - 40 10 - 32 .125 .170 217-072554
MS51830A103 217-080285 MS51830A103L 217-081285 6 - 32 12 - 28 .125 .170 217-072556
MS51830A104 217-080286 MS51830A104L 217-081286 8 - 32 1/4 - 28* .175 .220 217-072558
* Modified Minor Diameter
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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