The Screw,shoulder, cataloged under National Stock Number 5305-00-005-0065, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-005-0065 |
| Primary Part Number | A51M42521-11 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Fastener Length | 2.106 INCHES MINIMUM AND 2.216 INCHES MAXIMUM IN |
| Thread Length | 0.312 INCHES MAXIMUM IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Thread Class | 3A A |
| 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 |
|---|---|
| A51M42521-11 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| A51M42521-11 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| A51M42521-11 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
NSN 5305-00-005-0065 is a Screw,shoulder, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-005-0065 has 1 manufacturer part number on file: A51M42521-11 (Northrop Grumman Systems Corporation).
Key specifications for A51M42521-11: Fastener Length: 2.106 INCHES MINIMUM AND 2.216 INCHES MAXIMUM IN; Thread Length: 0.312 INCHES MAXIMUM IN; Head Style: FLAT CHAMFER; Thread Direction: RIGHT-HAND. 5 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.