The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-076-4756, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Div Pratt & Whitney. Government technical data includes 27 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-076-4756 |
| Primary Part Number | 160014-1 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Rtx Corporation Div Pratt & Whitney |
| Status | ACTIVE |
| Fourth Diameter From Head | 0.432 INCHES MINIMUM AND 0.436 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Fifth Diameter | 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN |
| Head Height | 0.160 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN |
| Fastener Length | 1.390 INCHES MINIMUM AND 1.450 INCHES MAXIMUM IN |
| Thread Length | 0.437 INCHES NOMINAL IN |
| Hole Configuration Style | HEXAGON FLATS |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.325 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 0.613 INCHES MINIMUM AND 0.619 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.437 INCHES IN |
| Distance From Largest Bearing Surface of Head to End of Third Diameter | 0.707 INCHES MINIMUM AND 0.713 INCHES MAXIMUM IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.432 INCHES MINIMUM AND 0.436 INCHES MAXIMUM IN |
| Width Between Flats | 0.684 INCHES MINIMUM AND 0.692 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.084 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN |
| Fifth Diameter From Head | 0.362 INCHES MINIMUM AND 0.367 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 5 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 302 OR STEEL COMP 303 OVERALL |
| Hole Quantity | 6 |
| Distance From Largest Bearing Surface of Head to End of Fourth Diameter | 0.795 INCHES MINIMUM AND 0.805 INCHES MAXIMUM IN |
| Third Diameter From Head | 0.325 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN |
| Thread Series Designator | UNF |
| Hole Type | DRILLED |
| Hole Diameter | 0.046 INCHES MINIMUM AND 0.056 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 160014-1 PRIMARY | Rtx Corporation Div Pratt & Whitney (USA) |
NSN 5306-01-076-4756 is a Bolt,externally Relieved Body, manufactured by Rtx Corporation Div Pratt & Whitney, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-076-4756 has 1 manufacturer part number on file: 160014-1 (Rtx Corporation Div Pratt & Whitney).
4 possible matches (shared part number, not a government interchangeability claim): 5365-01-408-5389, 3040-01-531-5521, 3120-01-532-1066. Verify interchangeability with system specifications before substitution.
Key specifications for 160014-1: Fourth Diameter From Head: 0.432 INCHES MINIMUM AND 0.436 INCHES MAXIMUM IN; Distance From Largest Bearing Surface of Head to End of Fifth Diameter: 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN; Head Height: 0.160 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN; Fastener Length: 1.390 INCHES MINIMUM AND 1.450 INCHES MAXIMUM IN. 27 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.