The Screw,machine, cataloged under National Stock Number 5305-01-485-3963, 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 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-485-3963 |
| Primary Part Number | AESC1C13812REA5BZ1 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The American Society of Mechanical Engineers |
| Status | ACTIVE |
| Fastener Length | 0.750 INCHES NOMINAL IN |
| Thread Length | 0.750 INCHES NOMINAL IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Quantity Per Inch | 32 |
| Head Diameter | 0.279 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 |
|---|---|
| AESC1C13812REA5BZ1 PRIMARY | The American Society of Mechanical Engineers (USA) |
| Reference | Meaning |
|---|---|
| 91771A151 | 5/9 Secondary reference Mcmaster-Carr Supply Co |
NSN 5305-01-485-3963 is a Screw,machine, manufactured by The American Society of Mechanical Engineers, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-485-3963 has 1 manufacturer part number on file: AESC1C13812REA5BZ1 (The American Society of Mechanical Engineers).
Key specifications for AESC1C13812REA5BZ1: Fastener Length: 0.750 INCHES NOMINAL IN; Thread Length: 0.750 INCHES NOMINAL IN; Head Style: FLAT COUNTERSUNK; Thread Direction: RIGHT-HAND. 7 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.