The Screw,machine, cataloged under National Stock Number 5305-01-385-3818, 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16 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-385-3818 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.378 INCHES MINIMUM AND 0.403 INCHES MAXIMUM IN |
| Screw Surface Treatment | ZINC |
| Fastener Length | 0.880 INCHES NOMINAL IN |
| Screw Material Document and Classification | SAE J429 GR 8 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Length | 0.880 INCHES NOMINAL IN |
| Locking Feature Material | PLASTIC POLYAMIDE NYLON |
| Nominal Thread Diameter | 0.630 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.922 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN |
| Locking Feature | PATCH OR STRIP OR PELLET |
| Screw Material | STEEL |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 11 |
| 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 |
| Reference | Meaning |
|---|---|
| B1821BH063C088L | 3/2 Design control — primary reference U.S. Government activity |
| 10087794 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5305-01-385-3818 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-385-3818: Head Height: 0.378 INCHES MINIMUM AND 0.403 INCHES MAXIMUM IN; Screw Surface Treatment: ZINC; Fastener Length: 0.880 INCHES NOMINAL IN; Screw Material Document and Classification: SAE J429 GR 8 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.