The Setscrew, cataloged under National Stock Number 5305-00-715-1212, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5305-00-715-1212 |
| Primary Part Number | MS51981-49 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| Status | CANCELLED |
| Width Across Flats | 0.125 INCHES NOMINAL IN |
| Fastener Length | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Thread Length | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Material Document and Classification | AISI ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL |
| Material | STEEL COMP 4032 OR STEEL COMP 4037 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 8630 OR STEEL COMP 8740 OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Thread Direction | RIGHT-HAND |
| Point Style | OVAL |
| Internal Drive Style | HEXAGON |
| Head Style | HEADLESS (SETSCREW) |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MS51981-49 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| 589572 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 589572 | General Motors Corp (USA) |
| BCUX41 | Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA) |
| MS51049-49 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| 102377 | Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA) |
| NASM51981-49 | National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA) |
NSN 5305-00-715-1212 is a Setscrew, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5305 (No Item Name Available). Status: cancelled.
NSN 5305-00-715-1212 has 7 cross-referenced part numbers: MS51981-49 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 589572 (U S Army Tank Automotive Command Amsta-Im-Mm), 589572 (General Motors Corp), BCUX41 (Army, United States Department of the Dba Rock Island Arsenal Jmtc), MS51049-49 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M) and 2 more.
There are 3 known substitutes for 5305-00-715-1212: 2520-00-383-4715, 2915-01-034-9216, 5945-01-151-1138. Verify interchangeability with system specifications before substitution.
Key specifications for MS51981-49: Width Across Flats: 0.125 INCHES NOMINAL IN; Fastener Length: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN; Thread Length: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC). 16 total characteristics are documented in the Federal Logistics Information System.
NSN 5305-00-715-1212 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.