The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-262-5410, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is General Electric Company. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 9 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-262-5410 |
| Primary Part Number | J644P12B |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Extended Washer Thickness | 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN |
| Head Height | 0.293 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| Fastener Length | 0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM IN |
| Extended Washer Diameter | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN |
| Thread Length | 0.750 INCHES NOMINAL IN |
| Hole Configuration Style | DOUBLE HEXAGON FLATS |
| First Diameter From Head | 0.222 INCHES MINIMUM AND 0.232 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DOUBLE HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.312 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.128 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | NICKEL ALLOY 718 OVERALL |
| Hole Quantity | 2 |
| Hole Type | DRILLED |
| Hole Diameter | 0.055 INCHES MINIMUM AND 0.075 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 |
|---|---|
| J644P12BQQ | Turbine Kinetics, Inc (USA) |
| J644P12B | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| J644P12B PRIMARY | General Electric Company (USA) |
| J644P12B | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| J644P12B | Asc International, Inc. Dba Asc International Inc Div Asc International (USA) |
| J644P12B | J.w. Manufacturing, Inc Dba Arconic Fastening Systems and Rings (USA) |
| J644P12B | Morton Grinding, Inc Dba Morton Manufacturing (USA) |
| J644P12B | Sps Technologies, Llc Dba PB Fasteners (USA) |
| J644P12B | Bristol Industries, Llc (USA) |
| Reference | Meaning |
|---|---|
| J644P12B | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-262-5410 is a Bolt,externally Relieved Body, manufactured by General Electric Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-262-5410 has 9 manufacturer part numbers on file: J644P12BQQ (Turbine Kinetics, Inc), J644P12B (Valley-Todeco, Inc. Dba Arconic Fastening Systems), J644P12B (General Electric Company), J644P12B (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), J644P12B (Asc International, Inc. Dba Asc International Inc Div Asc International) and 4 more.
Key specifications for J644P12B: Extended Washer Thickness: 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN; Head Height: 0.293 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN; Fastener Length: 0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM IN; Extended Washer Diameter: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN. 19 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.