The Bolt,machine, cataloged under National Stock Number 5306-00-678-3531, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-678-3531 |
| Primary Part Number | 7340060 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Head Height | 0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN |
| Fastener Length | 1.187 INCHES MINIMUM AND 1.234 INCHES MAXIMUM IN |
| Thread Length | 0.677 INCHES MINIMUM AND 0.784 INCHES MAXIMUM IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | ASTM A322 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A331 ASSN STD 1ST MATERIAL RESPONSE OR 66 FED STD 2ND MATERIAL RESPONSE OR ASTM A322 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A331 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A322 ASSN STD 3RD MATERIAL RESPONSE OR ASTM A331 ASSN STD 3RD MATERIAL RESPONSE OR ASTM A322 ASSN STD 4TH MATERIAL RESPONSE OR ASTM A331 ASSN STD 4TH MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.450 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Width Between Flats | 0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 8740 OR STEEL COMP 4130 OR STEEL COMP 4140 OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 7340060 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 5306006783531 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
NSN 5306-00-678-3531 is a Bolt,machine, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-678-3531 has 1 manufacturer part number on file: 7340060 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7340060: Head Height: 0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN; Fastener Length: 1.187 INCHES MINIMUM AND 1.234 INCHES MAXIMUM IN; Thread Length: 0.677 INCHES MINIMUM AND 0.784 INCHES MAXIMUM IN; Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL. 15 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.