The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-340-8908, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 16 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-340-8908 |
| Primary Part Number | 12347456 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Extended Washer Thickness | 0.100 INCHES MINIMUM IN |
| Head Height | 0.620 INCHES NOMINAL IN |
| Fastener Length | 1.750 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-13924,BLACK,CLASS I MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 1.330 INCHES MAXIMUM IN |
| Thread Length | 1.530 INCHES NOMINAL IN |
| Material Document and Classification | SAE J429,GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.923 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN |
| Surface Treatment | OXIDE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 11 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 12347456 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5305-01-340-8908 is a Screw,cap,hexagon Head, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-340-8908 has 1 manufacturer part number on file: 12347456 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12347456: Extended Washer Thickness: 0.100 INCHES MINIMUM IN; Head Height: 0.620 INCHES NOMINAL IN; Fastener Length: 1.750 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-13924,BLACK,CLASS I MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.