The Bolt,machine, cataloged under National Stock Number 5306-00-425-8439, 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 22 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-425-8439 |
| Primary Part Number | 4038010 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Extended Washer Thickness | 0.040 INCHES MINIMUM IN |
| Head Height | 0.248 INCHES MINIMUM AND 0.268 INCHES MAXIMUM IN |
| Fastener Length | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Extended Washer Diameter | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Thread Length | 0.273 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN |
| Hardness Rating | 34.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM OVERALL |
| Hole Configuration Style | HEXAGON FLATS |
| Material Document and Classification | AMS 5708 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.250 INCHES NOMINAL IN |
| Minimum Tensile Strength | 175000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 115000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | NICKEL ALLOY OVERALL |
| Hole Quantity | 4 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.046 INCHES NOMINAL 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 |
|---|---|
| 4038010 | Necchi Spa (ITA) |
| 4038010 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 4038010 | Fairchild Semiconductor Corp World Magnetics Sub of Schlumberger Ltd (USA) |
| Reference | Meaning |
|---|---|
| 4038010 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 4038010 | 5/2 Secondary reference U.S. Government activity |
| 4038010 | 5/2 Secondary reference U.S. Government activity |
| 5306PL1495358 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 4038010 | 5/9 Secondary reference Mnr Tool Engineering Inc |
| 4038010 | 5/9 Secondary reference Diaphragm Industries Inc |
NSN 5306-00-425-8439 is a Bolt,machine, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-425-8439 has 3 manufacturer part numbers on file: 4038010 (Necchi Spa), 4038010 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 4038010 (Fairchild Semiconductor Corp World Magnetics Sub of Schlumberger Ltd).
Key specifications for 4038010: Extended Washer Thickness: 0.040 INCHES MINIMUM IN; Head Height: 0.248 INCHES MINIMUM AND 0.268 INCHES MAXIMUM IN; Fastener Length: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN; Extended Washer Diameter: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN. 22 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.