The Setscrew, cataloged under National Stock Number 5305-01-643-6451, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The American Society of Mechanical Engineers. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-643-6451 |
| Primary Part Number | AES40C375375EJ1A96 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The American Society of Mechanical Engineers |
| Status | ACTIVE |
| Point Diameter | 0.194 INCHES MINIMUM AND 0.212 INCHES MAXIMUM IN |
| Width Across Flats | 0.375 INCHES MINIMUM AND 0.379 INCHES MAXIMUM IN |
| Fastener Length | 0.375 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Surface Treatment | ZINC OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| AES40C375375EJ1A96 PRIMARY | The American Society of Mechanical Engineers (USA) |
| Reference | Meaning |
|---|---|
| AES40C375375EJ1A96 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-643-6451 is a Setscrew, manufactured by The American Society of Mechanical Engineers, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-643-6451 has 1 manufacturer part number on file: AES40C375375EJ1A96 (The American Society of Mechanical Engineers).
Key specifications for AES40C375375EJ1A96: Point Diameter: 0.194 INCHES MINIMUM AND 0.212 INCHES MAXIMUM IN; Width Across Flats: 0.375 INCHES MINIMUM AND 0.379 INCHES MAXIMUM IN; Fastener Length: 0.375 INCHES NOMINAL IN; Nominal Thread Diameter: 0.375 INCHES IN. 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.