The Bolt,machine, cataloged under National Stock Number 5306-00-448-7500, 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 23 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-00-448-7500 |
| Primary Part Number | 443997 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 63.0 MICROINCHES BEARING SURFACE OF HEAD |
| Extended Washer Thickness | 0.195 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Head Height | 0.485 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN |
| Fastener Length | 0.415 INCHES MINIMUM AND 0.435 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.340 INCHES MINIMUM AND 0.345 INCHES MAXIMUM IN |
| Precious Material | SILVER |
| Thread Length | 0.353 INCHES MINIMUM AND 0.373 INCHES MAXIMUM IN |
| Hardness Rating | 24.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS7478 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN |
| Nonstandard Thread Pitch Diameter | +0.1644 TO 0.1667 INCHES IN |
| Surface Treatment | SILVER OVERALL |
| Minimum Tensile Strength | 130000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 85000 POUNDS PER SQUARE INCH LBS |
| Thread Quantity Per Inch | 32 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNS |
| 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 |
|---|---|
| 443997 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 443997 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 443997 | 5/2 Secondary reference U.S. Government activity |
| 443997 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-448-7500 is a Bolt,machine, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-448-7500 has 2 manufacturer part numbers on file: 443997 (Sps Technologies, Llc Dba PB Fasteners), 443997 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 443997: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 63.0 MICROINCHES BEARING SURFACE OF HEAD; Extended Washer Thickness: 0.195 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN; Head Height: 0.485 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN. 23 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.