The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-431-7548, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Apollo Aerospace. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-431-7548 |
| Primary Part Number | 3167937-5 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Apollo Aerospace |
| Status | ACTIVE |
| Width Across Flats | 3.020 MILLIMETERS MINIMUM AND 3.071 MILLIMETERS MAXIMUM MM |
| Head Height | 1.89 MILLIMETERS MINIMUM AND 2.00 MILLIMETERS MAXIMUM MM |
| External Thread Tolerance Class | 6G G |
| Fastener Length | 6.0 MILLIMETERS NOMINAL MM |
| Surface Treatment Document and Classification | ASTM F837M ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Pitch in Millimeters | 0.5 |
| Material Document and Classification | ASTM F837M ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 3.0 MILLIMETERS MM |
| Head Style | FLAT FILLISTER |
| Thread Direction | RIGHT-HAND |
| Locking Feature | PATCH THREADS |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HEXAGON |
| Material | STEEL COMP 301 OVERALL |
| Thread Series Designator | M |
| Head Diameter | 4.82 MILLIMETERS MINIMUM AND 5.00 MILLIMETERS MAXIMUM 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 5305-01-431-7548 is a Screw,cap,socket Head, manufactured by Apollo Aerospace, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-431-7548 has 2 manufacturer part numbers on file: 3167937-5 (Apollo Aerospace), 3167937-5 (Fastbolt Corp. Dba Fastbolt Corp).
Key specifications for 3167937-5: Width Across Flats: 3.020 MILLIMETERS MINIMUM AND 3.071 MILLIMETERS MAXIMUM MM; Head Height: 1.89 MILLIMETERS MINIMUM AND 2.00 MILLIMETERS MAXIMUM MM; External Thread Tolerance Class: 6G G; Fastener Length: 6.0 MILLIMETERS NOMINAL MM. 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.