The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-319-3625, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-319-3625 |
| Primary Part Number | 4074021 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Head Height | 0.155 INCHES MINIMUM AND 0.165 INCHES MAXIMUM IN |
| Fastener Length | 0.715 INCHES MINIMUM AND 0.735 INCHES MAXIMUM IN |
| Thread Length | 0.315 INCHES NOMINAL IN |
| First Diameter From Head | 0.194 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | TEE NO. 6 |
| Thread Direction | RIGHT-HAND |
| Head Length | 0.650 INCHES MINIMUM AND 0.670 INCHES MAXIMUM IN |
| Width Between Flats | 0.420 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.400 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Chamfer Angle | 48.0 DEGREES MINIMUM AND 52.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | NICKEL ALLOY OVERALL |
| 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 |
|---|---|
| 4074021 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 5306PL1499213 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5306-01-319-3625 is a Bolt,externally Relieved Body, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-319-3625 has 1 manufacturer part number on file: 4074021 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 4074021: Head Height: 0.155 INCHES MINIMUM AND 0.165 INCHES MAXIMUM IN; Fastener Length: 0.715 INCHES MINIMUM AND 0.735 INCHES MAXIMUM IN; Thread Length: 0.315 INCHES NOMINAL IN; First Diameter From Head: 0.194 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN. 15 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.