The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-00-172-4307, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-172-4307 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Extended Washer Thickness | 0.060 INCHES NOMINAL IN |
| Head Height | 0.615 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN |
| Fastener Length | 3.320 INCHES MINIMUM AND 3.350 INCHES MAXIMUM IN |
| Extended Washer Diameter | 2.160 INCHES NOMINAL IN |
| Thread Length | 0.595 INCHES MINIMUM AND 0.655 INCHES MAXIMUM IN |
| Style Designator | CONCENTRIC HOLE UNTHREADED |
| Nominal Thread Diameter | 1.375 INCHES IN |
| Head Style | HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.481 INCHES MINIMUM AND 1.502 INCHES MAXIMUM IN |
| Shoulder Diameter | 1.4994 INCHES MINIMUM AND 1.5005 INCHES MAXIMUM IN |
| Concentric Hole Diameter | 0.875 INCHES MINIMUM AND 0.877 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 200000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 12 |
| Shoulder Length | 2.445 INCHES NOMINAL IN |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| 4P51098-101A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-172-4307 is a Bolt,internally Relieved Body, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-00-172-4307: Extended Washer Thickness: 0.060 INCHES NOMINAL IN; Head Height: 0.615 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN; Fastener Length: 3.320 INCHES MINIMUM AND 3.350 INCHES MAXIMUM IN; Extended Washer Diameter: 2.160 INCHES NOMINAL IN. 17 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.