The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-279-9131, 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 18 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-279-9131 |
| Primary Part Number | SD300-81245 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES OVERALL |
| Extended Washer Thickness | 0.250 INCHES NOMINAL IN |
| Head Height | 0.806 INCHES NOMINAL IN |
| Fastener Length | 0.965 INCHES NOMINAL IN |
| Extended Washer Diameter | 1.230 INCHES NOMINAL IN |
| Thread Length | 3.075 INCHES MINIMUM AND 3.105 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.125 INCHES NOMINAL IN |
| Width Between Flats | 1.059 INCHES NOMINAL IN |
| Grip Diameter | 0.7480 INCHES MINIMUM AND 0.7490 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL 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 |
|---|---|
| SD300-81245 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
NSN 5306-01-279-9131 is a Bolt,close Tolerance, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-279-9131 has 1 manufacturer part number on file: SD300-81245 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for SD300-81245: Surface Finish: 125.0 MICROINCHES OVERALL; Extended Washer Thickness: 0.250 INCHES NOMINAL IN; Head Height: 0.806 INCHES NOMINAL IN; Fastener Length: 0.965 INCHES NOMINAL IN. 18 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.