The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-325-8978, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-325-8978 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Width Across Flats | 0.219 INCHES NOMINAL IN |
| Fastener Length | 2.000 INCHES NOMINAL IN |
| Thread Length | 1.641 INCHES MINIMUM AND 1.766 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-N-286 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 81348-QQ-N-286G GOVERNMENT SPECIFICATION G |
| Internal Drive Style | HEXAGON |
| Countersink Angle | 80.0 DEGREES MINIMUM AND 84.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | NICKEL ALLOY K-500 OR NICKEL ALLOY 502 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.720 INCHES MINIMUM AND 0.781 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 |
|---|---|
| 0.375-16UNC-3AX2.000IN.LG NICUAL | 5/1 Secondary reference U.S. Government activity |
| FF-S-86TYIV.375-16UNC-3AX2NICUAL | 2/2 Government specification standardization U.S. Government activity |
| QQ-N-286G | 4/1 Identification reference U.S. Government activity |
| FF-S-86 | 5/9 Secondary reference U.S. Government activity |
| 0.375-16UNC-3AX2.000 IN. LG NICU | 5/9 Secondary reference U.S. Government activity |
| FF-S-86,TYIV.375-16UNC-3AX2 NICU | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-325-8978 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-325-8978: Width Across Flats: 0.219 INCHES NOMINAL IN; Fastener Length: 2.000 INCHES NOMINAL IN; Thread Length: 1.641 INCHES MINIMUM AND 1.766 INCHES MAXIMUM IN; Material Document and Classification: QQ-N-286 FED SPEC ALL MATERIAL RESPONSES OVERALL. 15 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.