The Bolt,machine, cataloged under National Stock Number 5306-00-939-9740, 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 16 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-939-9740 |
| Primary Part Number | 510872 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Head Height | 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN |
| Fastener Length | 1.170 INCHES MINIMUM AND 1.190 INCHES MAXIMUM IN |
| Thread Length | 0.630 INCHES MINIMUM AND 0.670 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.065 INCHES MINIMUM AND 0.072 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.500 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN |
| Width Between Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | TITANIUM ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.045 INCHES MINIMUM AND 1.065 INCHES MAXIMUM FIRST HOLE 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 |
|---|---|
| 510872 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 510872 | Necchi Spa (ITA) |
| 510872 | Taylor Machine Works Inc (USA) |
| 510872 | Aerojet Rocketdyne of De, Inc (USA) |
| Reference | Meaning |
|---|---|
| 510872 | 3/2 Design control — primary reference U.S. Government activity |
| 510872 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| 510872 | 3/2 Design control — primary reference U.S. Government activity |
| 510872 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
NSN 5306-00-939-9740 is a Bolt,machine, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-939-9740 has 4 manufacturer part numbers on file: 510872 (Sps Technologies, Llc Dba PB Fasteners), 510872 (Necchi Spa), 510872 (Taylor Machine Works Inc), 510872 (Aerojet Rocketdyne of De, Inc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-389-2785. Verify interchangeability with system specifications before substitution.
Key specifications for 510872: Head Height: 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN; Fastener Length: 1.170 INCHES MINIMUM AND 1.190 INCHES MAXIMUM IN; Thread Length: 0.630 INCHES MINIMUM AND 0.670 INCHES MAXIMUM IN; Shank Unthreaded Hole Diameter: 0.065 INCHES MINIMUM AND 0.072 INCHES MAXIMUM FIRST HOLE IN. 16 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.