The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-01-166-4412, 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21 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-166-4412 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.625 INCHES NOMINAL IN |
| Fastener Length | 0.875 INCHES NOMINAL IN |
| Internal Thread Length | 0.250 INCHES NOMINAL CONCENTRIC HOLE IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) CONCENTRIC HOLE |
| Internal Thread Direction | RIGHT-HAND CONCENTRIC HOLE |
| Thread Length | 0.693 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN |
| Hole Configuration Style | ROUND LONGITUDINAL HOLE |
| Threads Per Inch | 20 CONCENTRIC HOLE |
| Style Designator | CONCENTRIC HOLE THREADED |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | PAN NO. 2 |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES CONCENTRIC HOLE IN |
| Internal Thread Class | 2B CONCENTRIC HOLE |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 11 |
| Hole Quantity | 2 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Hole Type | DRILLED |
| Hole Diameter | 0.312 INCHES NOMINAL IN |
| Head Diameter | 1.188 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 |
|---|---|
| 5-11-849-92 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-166-4412 is a Bolt,internally Relieved Body, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-166-4412: Head Height: 0.625 INCHES NOMINAL IN; Fastener Length: 0.875 INCHES NOMINAL IN; Internal Thread Length: 0.250 INCHES NOMINAL CONCENTRIC HOLE IN; Thread Series: UNIFIED NATIONAL COARSE (UNC) CONCENTRIC HOLE. 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.