The Bolt,shoulder, cataloged under National Stock Number 5306-01-166-0971, 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 21 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-166-0971 |
| Primary Part Number | 65589-6 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Head Height | 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN |
| Fastener Length | 2.900 INCHES MINIMUM AND 2.920 INCHES MAXIMUM IN |
| Shoulder Length | 2.080 INCHES MINIMUM AND 2.100 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.763 INCHES MINIMUM AND 0.764 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.820 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 55.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM OVERALL |
| Hole Configuration Style | ROUND INTERNAL HEXAGON |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL OVERALL |
| Hole Quantity | 1 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.376 INCHES MINIMUM AND 0.379 INCHES MAXIMUM IN |
| Head Diameter | 1.220 INCHES MINIMUM AND 1.230 INCHES MAXIMUM 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 |
|---|---|
| 65589-6 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 207-12-6 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| VS2845-6 | 3/2 Design control — primary reference U.S. Government activity |
| C2898-6 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5306-01-166-0971 is a Bolt,shoulder, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-166-0971 has 2 manufacturer part numbers on file: 65589-6 (Sps Technologies, Llc Dba PB Fasteners), 207-12-6 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company).
2 possible matches (shared part number, not a government interchangeability claim): 5331-01-282-9507, 5962-01-323-1837. Verify interchangeability with system specifications before substitution.
Key specifications for 65589-6: Head Height: 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN; Fastener Length: 2.900 INCHES MINIMUM AND 2.920 INCHES MAXIMUM IN; Shoulder Length: 2.080 INCHES MINIMUM AND 2.100 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.763 INCHES MINIMUM AND 0.764 INCHES MAXIMUM FIRST SHOULDER IN. 21 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.