The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-00-888-6741, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-888-6741 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.300 INCHES NOMINAL IN |
| Fastener Length | 10.980 INCHES NOMINAL IN |
| Concentric Hole Depth | 8.800 INCHES NOMINAL IN |
| Thread Length | 0.995 INCHES MINIMUM IN |
| Shank Unthreaded Hole Diameter | 0.143 INCHES MINIMUM AND 0.149 INCHES MAXIMUM FIRST HOLE IN |
| Style Designator | COUNTERBORE UNTHREADED |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Counterbore Depth | 0.200 INCHES NOMINAL IN |
| Head Style | ROUND W/WRENCH FLATS |
| Thread Direction | RIGHT-HAND |
| Counterbore Diameter | 0.880 INCHES NOMINAL IN |
| Width Between Flats | 2.000 INCHES NOMINAL IN |
| Shoulder Diameter | 1.749 INCHES NOMINAL IN |
| Concentric Hole Diameter | 0.748 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Surface Treatment | CHROMIUM GRIP |
| Minimum Tensile Strength | 260000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL COMP E4340 OR STEEL COMP 4340 OVERALL |
| Shoulder Length | 9.320 INCHES NOMINAL IN |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 10.490 INCHES NOMINAL FIRST HOLE IN |
| Head Diameter | 2.250 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 |
|---|---|
| 783264-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-888-6741 is a Bolt,internally Relieved Body, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-00-888-6741: Head Height: 0.300 INCHES NOMINAL IN; Fastener Length: 10.980 INCHES NOMINAL IN; Concentric Hole Depth: 8.800 INCHES NOMINAL IN; Thread Length: 0.995 INCHES MINIMUM IN. 23 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.