The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-591-5174, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is W S Darley & Co. Government technical data includes 11 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-591-5174 |
| Primary Part Number | 5400803 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | W S Darley & Co |
| Status | ACTIVE |
| Head Height | 5.5 MILLIMETERS MAXIMUM MM |
| External Thread Tolerance Class | 6G G |
| Fastener Length | 45.0 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 1.2 |
| Thread Length | 22.0 MILLIMETERS NOMINAL MM |
| Nominal Thread Diameter | 8.0 MILLIMETERS MM |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 13.0 MILLIMETERS MAXIMUM MM |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | M |
| 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 |
|---|---|
| 5400803 PRIMARY | W S Darley & Co (USA) |
NSN 5305-01-591-5174 is a Screw,cap,hexagon Head, manufactured by W S Darley & Co, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-591-5174 has 1 manufacturer part number on file: 5400803 (W S Darley & Co).
Key specifications for 5400803: Head Height: 5.5 MILLIMETERS MAXIMUM MM; External Thread Tolerance Class: 6G G; Fastener Length: 45.0 MILLIMETERS NOMINAL MM; Thread Pitch in Millimeters: 1.2. 11 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.