The Bolt,machine, cataloged under National Stock Number 5306-00-271-8438, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Westinghouse Electric Corp. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 11 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 14 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-271-8438 |
| Primary Part Number | 25J124PC591 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Extended Washer Thickness | 0.094 INCHES NOMINAL IN |
| Head Height | 0.656 INCHES NOMINAL IN |
| Fastener Length | 2.250 INCHES NOMINAL IN |
| Extended Washer Diameter | 0.840 INCHES MINIMUM AND 0.860 INCHES MAXIMUM IN |
| Thread Length | 0.875 INCHES MINIMUM IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.750 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 25J124PC591 PRIMARY | Westinghouse Electric Corp (USA) |
| 25J85PC185 PRIMARY | Westinghouse Electric Corp (USA) |
| 39J763PC38 PRIMARY | Westinghouse Electric Corp (USA) |
| 40J414PC128 PRIMARY | Westinghouse Electric Corp (USA) |
| 25J109PC226 PRIMARY | Westinghouse Electric Corp (USA) |
| 39J750PC235 PRIMARY | Westinghouse Electric Corp (USA) |
| 93J411PC435 PRIMARY | Westinghouse Electric Corp (USA) |
| 1110440 PRIMARY | Westinghouse Electric Corp (USA) |
| 41J411PC435 PRIMARY | Westinghouse Electric Corp (USA) |
| 41J420PC102 PRIMARY | Westinghouse Electric Corp (USA) |
| 26J848PC185 PRIMARY | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| 40J409PC238 | 5/9 Secondary reference Westinghouse Electric Corp |
| 39J750PC235 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 41J420PC102 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 40J409PC238 | 3/2 Design control — primary reference U.S. Government activity |
| 25J124PC591 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 93J411PC435 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 41J411PC435 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 40J414PC128 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 25J109PC226 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 1110440 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 26J848PC185 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 39J763PC38 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 25J85PC185 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 40J409PC238 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
NSN 5306-00-271-8438 is a Bolt,machine, manufactured by Westinghouse Electric Corp, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-271-8438 has 11 manufacturer part numbers on file: 25J124PC591 (Westinghouse Electric Corp), 25J85PC185 (Westinghouse Electric Corp), 39J763PC38 (Westinghouse Electric Corp), 40J414PC128 (Westinghouse Electric Corp), 25J109PC226 (Westinghouse Electric Corp) and 6 more.
Key specifications for 25J124PC591: Extended Washer Thickness: 0.094 INCHES NOMINAL IN; Head Height: 0.656 INCHES NOMINAL IN; Fastener Length: 2.250 INCHES NOMINAL IN; Extended Washer Diameter: 0.840 INCHES MINIMUM AND 0.860 INCHES MAXIMUM IN. 14 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.