The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-606-5178, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-606-5178 |
| Primary Part Number | 10059550-24 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems |
| Status | ACTIVE |
| Head Height | 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN |
| Fastener Length | 1.5 INCHES NOMINAL IN |
| Thread Length | 0.875 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.3125 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80204-ASME B18.2.1 NATIONAL STD/SPEC |
| Width Between Flats | 0.5 INCHES NOMINAL IN |
| Surface Treatment | ZINC OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | A18 |
| Material | STEEL OVERALL |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 10059550-24 PRIMARY | General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems (USA) |
| Reference | Meaning |
|---|---|
| 10059550 | D/9 Drawing number reference only General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems |
NSN 5305-01-606-5178 is a Screw,cap,hexagon Head, manufactured by General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-606-5178 has 1 manufacturer part number on file: 10059550-24 (General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems).
1 possible match (shared part number, not a government interchangeability claim): 5305-01-606-5179. Verify interchangeability with system specifications before substitution.
Key specifications for 10059550-24: Head Height: 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN; Fastener Length: 1.5 INCHES NOMINAL IN; Thread Length: 0.875 INCHES NOMINAL IN; Nominal Thread Diameter: 0.3125 INCHES IN. 13 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.