The Bolt,shoulder, cataloged under National Stock Number 5306-01-320-1048, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-320-1048 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.380 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN |
| Fastener Length | 4.220 INCHES MINIMUM AND 4.260 INCHES MAXIMUM IN |
| Shoulder Length | 3.020 INCHES NOMINAL FIRST SHOULDER IN |
| Surface Treatment Document and Classification | DOD-P-16232 TYM CL4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.681 INCHES MINIMUM AND 0.683 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.820 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.000 INCHES NOMINAL IN |
| Surface Treatment | PHOSPHATE MANGANESE OVERALL |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP E4340 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 |
| Reference | Meaning |
|---|---|
| 11-1-3515 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-320-1048 is a Bolt,shoulder, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-320-1048: Head Height: 0.380 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN; Fastener Length: 4.220 INCHES MINIMUM AND 4.260 INCHES MAXIMUM IN; Shoulder Length: 3.020 INCHES NOMINAL FIRST SHOULDER IN; Surface Treatment Document and Classification: DOD-P-16232 TYM CL4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 18 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.