The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-477-8764, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-477-8764 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Width Across Flats | 0.625 INCHES NOMINAL IN |
| Head Height | 0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Fastener Length | 2.000 INCHES NOMINAL IN |
| Thread Length | 2.000 INCHES NOMINAL IN |
| Hardness Rating | 24.0 ROCKWELL C MINIMUM FASTENER |
| Material Document and Classification | QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | PAN NO. 2 |
| Thread Direction | RIGHT-HAND |
| Locking Feature | PATCH OR PELLET OR STRIP FASTENER |
| Minimum Tensile Strength | 130000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 90000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 10 |
| Material | NICKEL ALLOY K-500 OVERALL |
| Thread Series Designator | UNRC |
| Head Diameter | 1.107 INCHES MINIMUM AND 1.125 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 |
|---|---|
| 0.750-10UNRC-3A-X2.000LG NICUAL | 2/2 Government specification standardization U.S. Government activity |
| 845-7286645 ITEM 18 | 5/1 Secondary reference Naval Sea Systems Command |
| MIL-S-1222 | 4/1 Identification reference U.S. Government activity |
| 2643-820-03 ITEM 18 | 5/1 Secondary reference U.S. Government activity |
NSN 5305-01-477-8764 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5305-01-545-0118, 5305-01-642-0410. Verify interchangeability with system specifications before substitution.
Key specifications for 5305-01-477-8764: Width Across Flats: 0.625 INCHES NOMINAL IN; Head Height: 0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN; Fastener Length: 2.000 INCHES NOMINAL IN; Thread Length: 2.000 INCHES NOMINAL IN. 18 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.