The Bolt,shoulder, cataloged under National Stock Number 5306-00-403-3550, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-403-3550 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.171 INCHES NOMINAL IN |
| Fastener Length | 1.750 INCHES NOMINAL IN |
| Shoulder Length | 0.700 INCHES MINIMUM AND 0.705 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.980 INCHES NOMINAL FIRST SHOULDER IN |
| Thread Length | 0.520 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | MIL-S-5626 COND F4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.750 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 4140 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 |
|---|---|
| 4F53296-103C | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-403-3550 is a Bolt,shoulder, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-00-403-3550: Head Height: 0.171 INCHES NOMINAL IN; Fastener Length: 1.750 INCHES NOMINAL IN; Shoulder Length: 0.700 INCHES MINIMUM AND 0.705 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.980 INCHES NOMINAL FIRST SHOULDER IN. 16 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.