The Bolt,shoulder, cataloged under National Stock Number 5306-00-776-1879, 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 17 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 | 5306-00-776-1879 |
| Primary Part Number | 7761879 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Head Height | 0.732 INCHES MINIMUM AND 0.768 INCHES MAXIMUM IN |
| Fastener Length | 7.750 INCHES NOMINAL IN |
| Shoulder Length | 6.125 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Diameter | 0.995 INCHES MINIMUM AND 1.000 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 1.375 INCHES MINIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 22.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | QQ-S-634 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.292 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL COMP 1035 OR STEEL COMP 1040 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 |
|---|---|
| 7761879 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5306-00-776-1879 is a Bolt,shoulder, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-776-1879 has 1 manufacturer part number on file: 7761879 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7761879: Head Height: 0.732 INCHES MINIMUM AND 0.768 INCHES MAXIMUM IN; Fastener Length: 7.750 INCHES NOMINAL IN; Shoulder Length: 6.125 INCHES NOMINAL FIRST SHOULDER IN; Shoulder Diameter: 0.995 INCHES MINIMUM AND 1.000 INCHES MAXIMUM FIRST SHOULDER IN. 17 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.