The Bolt,shoulder, cataloged under National Stock Number 5306-00-945-9989, 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 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-945-9989 |
| Primary Part Number | 10921544 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Head Height | 0.375 INCHES NOMINAL IN |
| Fastener Length | 4.937 INCHES NOMINAL IN |
| Shoulder Length | 4.000 INCHES NOMINAL FIRST SHOULDER IN |
| Distance From Centerline to Flat | 0.875 INCHES NOMINAL IN |
| Shoulder Diameter | 1.4990 INCHES MINIMUM AND 1.4995 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.687 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 25.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL |
| Head Style | DEE CHAMFER |
| Thread Direction | RIGHT-HAND |
| Thread Class | 3A A |
| Material | STEEL COMP 4140 OR STEEL COMP 8640 OVERALL |
| Thread Series Designator | UNEF |
| Head Diameter | 2.500 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 |
|---|---|
| 10921544 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 5306-945-9989 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 5306-00-945-9989 is a Bolt,shoulder, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-945-9989 has 1 manufacturer part number on file: 10921544 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 10921544: Head Height: 0.375 INCHES NOMINAL IN; Fastener Length: 4.937 INCHES NOMINAL IN; Shoulder Length: 4.000 INCHES NOMINAL FIRST SHOULDER IN; Distance From Centerline to Flat: 0.875 INCHES NOMINAL IN. 14 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.