The Setscrew, cataloged under National Stock Number 5305-00-752-1391, 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 20 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-752-1391 |
| Primary Part Number | 7521391 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Head Height | 0.328 INCHES NOMINAL IN |
| Point Length | 0.438 INCHES NOMINAL IN |
| Fastener Length | 1.047 INCHES NOMINAL IN |
| Thread Length | 0.609 INCHES MINIMUM IN |
| Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| Hole Configuration Style | SQUARE LONGITUDINAL HOLE |
| Point Chamfer Angle | 30.0 DEGREES MINIMUM AND 31.0 DEGREES MAXIMUM |
| Nominal Thread Diameter | 0.438 INCHES IN |
| Head Style | SQUARE |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Width Between Flats | 0.438 INCHES NOMINAL IN |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 3140H OR STEEL COMP 4042H OR STEEL COMP 4140 OVERALL |
| Hole Quantity | 2 |
| Thread Series Designator | UNF |
| Hole Type | DRILLED |
| Hole Diameter | 0.094 INCHES NOMINAL IN |
| 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 |
|---|---|
| 7521391 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 913696 | 5/9 Secondary reference Sasco Inc Canadian Div |
| KC5124 | 5/9 Secondary reference Diamond Reo Truck Co |
| 5305007521391 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| 99031R1 | 5/2 Secondary reference U.S. Government activity |
| 379B1 | 5/9 Secondary reference Diamond Reo Truck Co |
| 99031R1 | 5/9 Secondary reference Navistar International Corporation Dba Navistar |
NSN 5305-00-752-1391 is a Setscrew, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-752-1391 has 1 manufacturer part number on file: 7521391 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7521391: Head Height: 0.328 INCHES NOMINAL IN; Point Length: 0.438 INCHES NOMINAL IN; Fastener Length: 1.047 INCHES NOMINAL IN; Thread Length: 0.609 INCHES MINIMUM IN. 20 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.