The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-581-3909, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Bae Systems Land & Armaments L.p.. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-581-3909 |
| Primary Part Number | 6430405-104M1 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Bae Systems Land & Armaments L.p. |
| Status | ACTIVE |
| Fastener Length | 25.0 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 1.8 |
| Thread Length | 25.0 MILLIMETERS NOMINAL MM |
| Nominal Thread Diameter | 12.0 MILLIMETERS MM |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HEXAGON |
| Material | STEEL OVERALL |
| Thread Series Designator | M |
| 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 |
|---|---|
| 6430405-104M1 | Amz Alabama Inc. (USA) |
| 6430405-104M1 PRIMARY | Bae Systems Land & Armaments L.p. (USA) |
| Reference | Meaning |
|---|---|
| 6430405-104M1 | 3/9 Design control — primary reference Bae Systems Survivability Systems Llc |
NSN 5305-01-581-3909 is a Screw,cap,socket Head, manufactured by Bae Systems Land & Armaments L.p., classified under FSC 5305, Screws. Status: active.
NSN 5305-01-581-3909 has 2 manufacturer part numbers on file: 6430405-104M1 (Amz Alabama Inc.), 6430405-104M1 (Bae Systems Land & Armaments L.p.).
Key specifications for 6430405-104M1: Fastener Length: 25.0 MILLIMETERS NOMINAL MM; Thread Pitch in Millimeters: 1.8; Thread Length: 25.0 MILLIMETERS NOMINAL MM; Nominal Thread Diameter: 12.0 MILLIMETERS MM. 9 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.