The Bolt,shoulder, cataloged under National Stock Number 5306-00-291-1121, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-291-1121 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.125 INCHES NOMINAL IN |
| Fastener Length | 2.215 INCHES NOMINAL IN |
| Shoulder Length | 1.720 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Diameter | 0.500 INCHES NOMINAL SECOND SHOULDER IN |
| Shoulder Diameter | 0.748 INCHES NOMINAL FIRST SHOULDER IN |
| Thread Length | 0.567 INCHES MINIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 36.0 ROCKWELL C NOMINAL OVERALL |
| Shank Unthreaded Hole Diameter | 0.143 INCHES NOMINAL FIRST HOLE IN |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP 1018 OR STEEL COMP 1025 OR STEEL COMP 1212 OR STEEL COMP 1213 OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 2.215 INCHES NOMINAL FIRST HOLE IN |
| Head Diameter | 1.125 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 |
|---|---|
| 344362 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-291-1121 is a Bolt,shoulder, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-00-291-1121: Head Height: 0.125 INCHES NOMINAL IN; Fastener Length: 2.215 INCHES NOMINAL IN; Shoulder Length: 1.720 INCHES NOMINAL FIRST SHOULDER IN; Shoulder Diameter: 0.500 INCHES NOMINAL SECOND SHOULDER IN. 20 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.