The Bolt,machine, cataloged under National Stock Number 5306-01-071-8745, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-071-8745 |
| Primary Part Number | 73958-4-0-13 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Extended Washer Thickness | 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN |
| Head Height | 0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN |
| Fastener Length | 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN |
| Extended Washer Diameter | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN |
| Thread Length | 0.516 INCHES MINIMUM AND 0.536 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DOUBLE HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | NICKEL ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| 73958-4-0-13 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| VS3049-4-13 | 3/2 Design control — primary reference U.S. Government activity |
| 145-132-9013 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-071-8745 is a Bolt,machine, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-071-8745 has 1 manufacturer part number on file: 73958-4-0-13 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for 73958-4-0-13: Extended Washer Thickness: 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN; Head Height: 0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN; Fastener Length: 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN; Extended Washer Diameter: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN. 13 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.