The Screw,machine, cataloged under National Stock Number 5305-01-451-4899, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-451-4899 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Extended Washer Thickness | 0.023 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN |
| Head Height | 0.082 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN |
| Fastener Length | 0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN |
| Screw Material Document and Classification | ASTM B221 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM B241 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM B308 ASSN STD SINGLE MATERIAL RESPONSE |
| Extended Washer Diameter | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Thread Length | 0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | ROUND EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Screw Material | ALUMINUM ALLOY |
| Minimum Tensile Strength | 62000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE II |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UN |
| Head Diameter | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| AN525D832R8 | 2/2 Government specification standardization U.S. Government activity |
| 5305PL0145731 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5305-01-451-4899 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-451-4899: Extended Washer Thickness: 0.023 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN; Head Height: 0.082 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN; Fastener Length: 0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN; Screw Material Document and Classification: ASTM B221 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM B241 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM B308 ASSN STD SINGLE MATERIAL RESPONSE. 16 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.