The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-159-9395, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Oshkosh Defense Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-159-9395 |
| Primary Part Number | 4HC308 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Head Height | 4.0 MILLIMETERS NOMINAL MM |
| Fastener Length | 30.00 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 1.0 |
| Thread Length | 18.0 MILLIMETERS NOMINAL MM |
| Hardness Rating | 18.0 ROCKWELL B MINIMUM AND 31.0 ROCKWELL B MAXIMUM OVERALL |
| Material Document and Classification | DIN 933 8.8 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 6.0 MILLIMETERS MM |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 10.0 MILLIMETERS NOMINAL MM |
| Surface Treatment | ZINC OVERALL |
| Minimum Tensile Strength | 113784 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 91000 POUNDS PER SQUARE INCH LBS |
| Material | STEEL PROPERTY CLASS 8.8 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 |
NSN 5305-01-159-9395 is a Screw,cap,hexagon Head, manufactured by Oshkosh Defense Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-159-9395 has 2 manufacturer part numbers on file: 990 0373 (Hiab Usa Inc), 4HC308 (Oshkosh Defense Llc).
Key specifications for 4HC308: Head Height: 4.0 MILLIMETERS NOMINAL MM; Fastener Length: 30.00 MILLIMETERS NOMINAL MM; Thread Pitch in Millimeters: 1.0; Thread Length: 18.0 MILLIMETERS NOMINAL MM. 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.