The Bolt,shoulder, cataloged under National Stock Number 5306-00-612-3740, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is A and M Aerospace, Inc.. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-612-3740 |
| Primary Part Number | 371670-1 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | A and M Aerospace, Inc. |
| Status | ACTIVE |
| Head Height | 0.250 INCHES NOMINAL IN |
| Fastener Length | 2.940 INCHES NOMINAL IN |
| Distance From Centerline to Flat | 0.746 INCHES NOMINAL IN |
| Thread Length | 0.930 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | DEE CHAMFER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 3A A |
| Material | STEEL COMP 4340 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 1.625 INCHES NOMINAL IN |
| 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 |
|---|---|
| 371670-1 | A and M Aerospace, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 371670-1 | 3/2 Design control — primary reference U.S. Government activity |
| 5306PL2178762 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5306-00-612-3740 is a Bolt,shoulder, manufactured by A and M Aerospace, Inc., classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-612-3740 has 1 manufacturer part number on file: 371670-1 (A and M Aerospace, Inc.).
Key specifications for 371670-1: Head Height: 0.250 INCHES NOMINAL IN; Fastener Length: 2.940 INCHES NOMINAL IN; Distance From Centerline to Flat: 0.746 INCHES NOMINAL IN; Thread Length: 0.930 INCHES NOMINAL IN. 13 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.