The Bolt,shoulder, cataloged under National Stock Number 5306-01-278-9620, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-278-9620 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.200 INCHES NOMINAL IN |
| Fastener Length | 1.510 INCHES NOMINAL IN |
| Shoulder Length | 0.050 INCHES NOMINAL SECOND SHOULDER IN |
| Shoulder Length | 0.117 INCHES NOMINAL THIRD SHOULDER IN |
| Shoulder Length | 0.933 INCHES NOMINAL FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.312 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Diameter | 0.260 INCHES NOMINAL SECOND SHOULDER IN |
| Shoulder Diameter | 0.312 INCHES NOMINAL THIRD SHOULDER IN |
| Thread Length | 0.360 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND ALL SHOULDERS |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.438 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 1071 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 |
|---|---|
| 2051725-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-278-9620 is a Bolt,shoulder, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-278-9620: Head Height: 0.200 INCHES NOMINAL IN; Fastener Length: 1.510 INCHES NOMINAL IN; Shoulder Length: 0.050 INCHES NOMINAL SECOND SHOULDER IN; Shoulder Length: 0.117 INCHES NOMINAL THIRD SHOULDER IN. 21 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.