The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-01-135-5505, 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17 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-135-5505 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 1.350 INCHES NOMINAL IN |
| Fastener Length | 2.000 INCHES NOMINAL IN |
| Internal Thread Length | 0.880 INCHES MINIMUM CONCENTRIC HOLE IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) CONCENTRIC HOLE |
| Thread Length | 1.750 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN |
| Threads Per Inch | 13 CONCENTRIC HOLE |
| Style Designator | CONCENTRIC HOLE THREADED |
| Material Document and Classification | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 1.375 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.500 INCHES CONCENTRIC HOLE IN |
| Width Between Flats | 1.994 INCHES MINIMUM AND 2.062 INCHES MAXIMUM IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 6 |
| Material | STEEL COMP E4340 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 87725-2601 ITEM 12 | 3/2 Design control — primary reference U.S. Government activity |
| 250-4775628 ITEM 12 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-135-5505 is a Bolt,internally Relieved Body, classified under FSC 5306, Bolts. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5306-01-534-0742. Verify interchangeability with system specifications before substitution.
Key specifications for 5306-01-135-5505: Head Height: 1.350 INCHES NOMINAL IN; Fastener Length: 2.000 INCHES NOMINAL IN; Internal Thread Length: 0.880 INCHES MINIMUM CONCENTRIC HOLE IN; Thread Series: UNIFIED NATIONAL COARSE (UNC) CONCENTRIC HOLE. 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.