The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-583-5501, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Defense Logistics Agency Dba Defense Supply Center Philadelphia. Government technical data includes 16 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 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 | 5305-01-583-5501 |
| Primary Part Number | 03307-01 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Defense Logistics Agency Dba Defense Supply Center Philadelphia |
| Status | ACTIVE |
| Width Across Flats | 5.0 MILLIMETERS NOMINAL MM |
| Head Height | 6.0 MILLIMETERS NOMINAL MM |
| Fastener Length | 18.0 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 1.0 |
| Thread Length | 18.0 MILLIMETERS NOMINAL MM |
| Hardness Rating | 39.0 ROCKWELL C MINIMUM OVERALL |
| Nominal Thread Diameter | 6.0 MILLIMETERS MM |
| Head Style | FLAT FILLISTER |
| Thread Direction | RIGHT-HAND |
| Color | BLACK OVERALL |
| Surface Treatment | OXIDE OVERALL |
| Minimum Tensile Strength | 174000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Material | STEEL OVERALL |
| Thread Series Designator | M |
| Head Diameter | 10.0 MILLIMETERS NOMINAL MM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5305-01-583-5501 is a Screw,cap,socket Head, manufactured by Defense Logistics Agency Dba Defense Supply Center Philadelphia, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-583-5501 has 2 manufacturer part numbers on file: 03307-01 (Defense Logistics Agency Dba Defense Supply Center Philadelphia), 91290A323 (Mcmaster-Carr Supply Co).
1 possible match (shared part number, not a government interchangeability claim): 2815-01-597-0354. Verify interchangeability with system specifications before substitution.
Key specifications for 03307-01: Width Across Flats: 5.0 MILLIMETERS NOMINAL MM; Head Height: 6.0 MILLIMETERS NOMINAL MM; Fastener Length: 18.0 MILLIMETERS NOMINAL MM; Thread Pitch in Millimeters: 1.0. 16 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.