The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-645-0791, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is National Cap and Set Screw Company. Government technical data includes 15 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-645-0791 |
| Primary Part Number | SCC040025-18/8-DH |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | National Cap and Set Screw Company |
| Status | ACTIVE |
| Width Across Flats | 0.094 INCHES NOMINAL IN |
| Head Height | 0.112 INCHES NOMINAL IN |
| Fastener Length | 0.250 INCHES NOMINAL IN |
| Thread Length | 0.250 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 40 |
| Material | STEEL COMP 302 OVERALL |
| Hole Quantity | 1 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Hole Diameter | 0.038 INCHES NOMINAL IN |
| Head Diameter | 0.183 INCHES NOMINAL IN |
| 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 |
|---|---|
| SCC040025-18/8-DH PRIMARY | National Cap and Set Screw Company (USA) |
| 90152A110 | Mcmaster-Carr Supply Co (USA) |
NSN 5305-01-645-0791 is a Screw,cap,socket Head, manufactured by National Cap and Set Screw Company, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-645-0791 has 2 manufacturer part numbers on file: SCC040025-18/8-DH (National Cap and Set Screw Company), 90152A110 (Mcmaster-Carr Supply Co).
Key specifications for SCC040025-18/8-DH: Width Across Flats: 0.094 INCHES NOMINAL IN; Head Height: 0.112 INCHES NOMINAL IN; Fastener Length: 0.250 INCHES NOMINAL IN; Thread Length: 0.250 INCHES NOMINAL IN. 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.