The Setscrew, cataloged under National Stock Number 5305-00-013-9041, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Rolls-Royce Solutions America Inc. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-013-9041 |
| Primary Part Number | 139041 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Rolls-Royce Solutions America Inc |
| Status | ACTIVE |
| Width Across Flats | 0.156 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN |
| Fastener Length | 0.250 INCHES NOMINAL IN |
| Thread Length | 0.250 INCHES MAXIMUM IN |
| Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Point Style | CUP |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 139041 PRIMARY | Rolls-Royce Solutions America Inc (USA) |
| 139041 | Army Weapons Command Attn Amswe-Ree-S (USA) |
| PC139041 | Power Components (deutschland) Gmbh (DEU) |
| 53355 PRIMARY | Am General Llc (USA) |
| Reference | Meaning |
|---|---|
| 139041 | 5/9 Secondary reference General Motors Corp |
| 139041 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| FFS103TYPE3STYLE4 | 4/1 Identification reference U.S. Government activity |
NSN 5305-00-013-9041 is a Setscrew, manufactured by Rolls-Royce Solutions America Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-013-9041 has 4 manufacturer part numbers on file: 139041 (Rolls-Royce Solutions America Inc), 139041 (Army Weapons Command Attn Amswe-Ree-S), PC139041 (Power Components (deutschland) Gmbh), 53355 (Am General Llc).
4 possible matches (shared part number, not a government interchangeability claim): 5995-00-653-4236, 5340-00-789-9237, 5950-00-897-5549. Verify interchangeability with system specifications before substitution.
Key specifications for 139041: Width Across Flats: 0.156 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN; Fastener Length: 0.250 INCHES NOMINAL IN; Thread Length: 0.250 INCHES MAXIMUM IN; Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL. 13 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.