The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-316-8948, 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 25 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-316-8948 |
| Primary Part Number | 4069371 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Extended Washer Thickness | 0.126 INCHES NOMINAL IN |
| Head Height | 0.485 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN |
| Fastener Length | 1.800 INCHES MINIMUM AND 1.820 INCHES MAXIMUM IN |
| Extended Washer Diameter | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN |
| Thread Length | 0.661 INCHES NOMINAL IN |
| Hole Configuration Style | DOUBLE HEXAGON LONGITUDINAL HOLE |
| Material Document and Classification | AMS 7475 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.416 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 0.645 INCHES MINIMUM AND 0.655 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Distance From Largest Bearing Surface of Head to End of Third Diameter | 1.139 INCHES MINIMUM AND 1.159 INCHES MAXIMUM IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.524 INCHES NOMINAL IN |
| Width Between Flats | 0.563 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 2 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | COBALT ALLOY OVERALL |
| Hole Quantity | 1 |
| Third Diameter From Head | 0.416 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.360 INCHES MINIMUM AND 0.380 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 |
|---|---|
| 4069371 | Acufast Aircraft Products (USA) |
| 4069371 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 4069371 | Rtx Corporation Div Pratt & Whitney (USA) |
| Reference | Meaning |
|---|---|
| 5306PL1499172 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 4069371 | 5/9 Secondary reference M.s. Aerospace Inc. Dba Ms Aerospace Inc |
NSN 5306-01-316-8948 is a Bolt,externally Relieved Body, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-316-8948 has 3 manufacturer part numbers on file: 4069371 (Acufast Aircraft Products), 4069371 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 4069371 (Rtx Corporation Div Pratt & Whitney).
Key specifications for 4069371: Extended Washer Thickness: 0.126 INCHES NOMINAL IN; Head Height: 0.485 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN; Fastener Length: 1.800 INCHES MINIMUM AND 1.820 INCHES MAXIMUM IN; Extended Washer Diameter: 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN. 25 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.