The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-657-8963, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-657-8963 |
| Primary Part Number | 3970537033 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Head Height | 0.32 MILLIMETERS MAXIMUM MM |
| Fastener Length | 1.75 MILLIMETERS NOMINAL MM |
| Extended Washer Diameter | 0.68 MILLIMETERS MAXIMUM MM |
| Thread Pitch in Millimeters | 0.31 |
| Thread Length | 0.88 MILLIMETERS NOMINAL MM |
| Nominal Thread Diameter | 0.31 MILLIMETERS MM |
| Head Style | CHAMFER FLANGE |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.489 MILLIMETERS MINIMUM AND 0.500 MILLIMETERS MAXIMUM MM |
| Material | STEEL 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 |
|---|---|
| 3970537033 PRIMARY | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 3970537 | D/9 Drawing number reference only Oshkosh Defense Llc |
NSN 5305-01-657-8963 is a Screw,cap,hexagon Head, manufactured by Oshkosh Defense Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-657-8963 has 1 manufacturer part number on file: 3970537033 (Oshkosh Defense Llc).
Key specifications for 3970537033: Head Height: 0.32 MILLIMETERS MAXIMUM MM; Fastener Length: 1.75 MILLIMETERS NOMINAL MM; Extended Washer Diameter: 0.68 MILLIMETERS MAXIMUM MM; Thread Pitch in Millimeters: 0.31. 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.