The Setscrew, cataloged under National Stock Number 5305-00-618-4574, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-618-4574 |
| Primary Part Number | 6184574 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Point Diameter | 1.062 INCHES NOMINAL IN |
| Head Height | 1.094 INCHES NOMINAL IN |
| Point Length | 0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN |
| Fastener Length | 9.094 INCHES MINIMUM AND 9.219 INCHES MAXIMUM IN |
| Thread Length | 8.938 INCHES MAXIMUM IN |
| Hardness Rating | 25.4 ROCKWELL C MINIMUM AND 32.1 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 1.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Point Style | BALL |
| Width Between Flats | 1.750 INCHES MINIMUM AND 1.812 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 126000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 12 |
| 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 |
|---|---|
| 6184574 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 31W3118 PRIMARY | Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.) (USA) |
| Reference | Meaning |
|---|---|
| 401073 | 3/9 Design control — primary reference White Motor Corp |
NSN 5305-00-618-4574 is a Setscrew, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-618-4574 has 2 manufacturer part numbers on file: 6184574 (U S Army Tank Automotive Command Amsta-Im-Mm), 31W3118 (Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.)).
1 possible match (shared part number, not a government interchangeability claim): 5961-01-035-9750. Verify interchangeability with system specifications before substitution.
Key specifications for 6184574: Point Diameter: 1.062 INCHES NOMINAL IN; Head Height: 1.094 INCHES NOMINAL IN; Point Length: 0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN; Fastener Length: 9.094 INCHES MINIMUM AND 9.219 INCHES MAXIMUM IN. 17 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.