The Bolt,shoulder, cataloged under National Stock Number 5306-00-225-5979, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-225-5979 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.150 INCHES NOMINAL IN |
| Fastener Length | 6.560 INCHES NOMINAL IN |
| Shoulder Length | 6.120 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Diameter | 0.6245 INCHES MINIMUM AND 0.6255 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.440 INCHES MINIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Shank Unthreaded Hole Diameter | 0.105 INCHES MINIMUM AND 0.110 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | MIL-S-5000,COND C MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | ROUND W/WRENCH FLATS |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.780 INCHES NOMINAL IN |
| Minimum Tensile Strength | 200000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP E4340 OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 6.385 INCHES NOMINAL FIRST HOLE IN |
| Head Diameter | 0.960 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 |
| Reference | Meaning |
|---|---|
| 4C15006-105A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-225-5979 is a Bolt,shoulder, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-00-225-5979: Head Height: 0.150 INCHES NOMINAL IN; Fastener Length: 6.560 INCHES NOMINAL IN; Shoulder Length: 6.120 INCHES NOMINAL FIRST SHOULDER IN; Shoulder Diameter: 0.6245 INCHES MINIMUM AND 0.6255 INCHES MAXIMUM FIRST SHOULDER IN. 19 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.