The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-588-1975, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Big Bolt, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-588-1975 |
| Primary Part Number | 12498080 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Big Bolt, Llc |
| Status | ACTIVE |
| Width Across Flats | 0.375 INCHES NOMINAL IN |
| Fastener Length | 3.750 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | ASTM B633, TYPE II ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | SAE J429, GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | BUTTON |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | ZINC OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 2A A |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 12498080 PRIMARY | Big Bolt, Llc (USA) |
| Reference | Meaning |
|---|---|
| 12498080 | 7/2 Vendor item drawing reference U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 5305-01-588-1975 is a Screw,cap,socket Head, manufactured by Big Bolt, Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-588-1975 has 1 manufacturer part number on file: 12498080 (Big Bolt, Llc).
Key specifications for 12498080: Width Across Flats: 0.375 INCHES NOMINAL IN; Fastener Length: 3.750 INCHES NOMINAL IN; Surface Treatment Document and Classification: ASTM B633, TYPE II ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Material Document and Classification: SAE J429, GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 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.
NSN 5305-01-588-1975 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.