The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-504-9781, 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 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-504-9781 |
| Primary Part Number | 3HA509 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Head Height | 0.455 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN |
| Fastener Length | 9.312 INCHES MINIMUM AND 9.500 INCHES MAXIMUM IN |
| Thread Length | 9.312 INCHES MINIMUM AND 9.500 INCHES MAXIMUM IN |
| Supplementary Features | MIN. TENSILE STRENGTH-LBS. 40,100; DIM ACROSS CORNERS 1.254 MIN., 1.299 MAX.; RADIUS 0.020 MIN., 0.045 MAX.; THREADS IN ACCORDANCE WITH SCREW THREAD STANDARDS FOR FEDERAL SERVICES, HANDBOOK H28 |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 94231-17614 MANUFACTURERS STANDARD |
| Width Between Flats | 1.100 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN |
| Surface Treatment | ZINC OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 10 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY DIMENSIONS |
| 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 |
|---|---|
| 3HA509 | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 03176141424 | 3/1 Design control — primary reference U.S. Government activity |
| 3HA509 | 5/9 Secondary reference Oshkosh Corp |
NSN 5305-01-504-9781 is a Screw,cap,hexagon Head, manufactured by Oshkosh Defense Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-504-9781 has 1 manufacturer part number on file: 3HA509 (Oshkosh Defense Llc).
Key specifications for 3HA509: Head Height: 0.455 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN; Fastener Length: 9.312 INCHES MINIMUM AND 9.500 INCHES MAXIMUM IN; Thread Length: 9.312 INCHES MINIMUM AND 9.500 INCHES MAXIMUM IN; Supplementary Features: MIN. TENSILE STRENGTH-LBS. 40,100; DIM ACROSS CORNERS 1.254 MIN., 1.299 MAX.; RADIUS 0.020 MIN., 0.045 MAX.; THREADS IN ACCORDANCE WITH SCREW THREAD STANDARDS FOR FEDERAL SERVICES, HANDBOOK H28. 14 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.