The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-00-273-2546, 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19 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-273-2546 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.065 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| Fastener Length | 4.451 INCHES MINIMUM AND 4.466 INCHES MAXIMUM IN |
| Concentric Hole Depth | 3.670 INCHES MINIMUM AND 3.685 INCHES MAXIMUM IN |
| Thread Length | 0.358 INCHES MINIMUM AND 0.403 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE IN |
| Style Designator | CONCENTRIC HOLE UNTHREADED |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | ROUND W/WRENCH FLATS |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.688 INCHES NOMINAL IN |
| Concentric Hole Diameter | 0.483 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 135000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 630 OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 4.312 INCHES NOMINAL FIRST HOLE IN |
| Head Diameter | 0.766 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 |
|---|---|
| 1202648-101 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-273-2546 is a Bolt,internally Relieved Body, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-00-273-2546: Head Height: 0.065 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN; Fastener Length: 4.451 INCHES MINIMUM AND 4.466 INCHES MAXIMUM IN; Concentric Hole Depth: 3.670 INCHES MINIMUM AND 3.685 INCHES MAXIMUM IN; Thread Length: 0.358 INCHES MINIMUM AND 0.403 INCHES MAXIMUM 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.