The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-065-6308, 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 17 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-065-6308 |
| Primary Part Number | 120978-8-26 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Head Height | 0.281 INCHES NOMINAL IN |
| Fastener Length | 2.143 INCHES MINIMUM AND 2.163 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | NAS672 NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.528 INCHES NOMINAL IN |
| Material Document and Classification | AMS6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | SPLINE DRIVE SHEAR HEAD |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.615 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN |
| Head Minor Diameter | 0.901 INCHES MAXIMUM IN |
| Grip Diameter | 0.4982 INCHES MINIMUM AND 0.4991 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| 120978-8-26 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| VCG0009-8-26 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| H411-8-26 PRIMARY | Huck International, Inc (USA) |
| AIC596-8-26 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| PBF7521-8-26 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| C7521-8-26 | 7/2 Vendor item drawing reference U.S. Government activity |
| C7521-8-26 | 5/9 Secondary reference Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| 120978-8-26 | 3/2 Design control — primary reference U.S. Government activity |
| VS3133-8-26 | 5/9 Secondary reference U.S. Government activity |
| C7521-8-26 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
NSN 5306-01-065-6308 is a Bolt,close Tolerance, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-065-6308 has 5 manufacturer part numbers on file: 120978-8-26 (Sps Technologies, Llc Dba PB Fasteners), VCG0009-8-26 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), H411-8-26 (Huck International, Inc), AIC596-8-26 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), PBF7521-8-26 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners).
Key specifications for 120978-8-26: Head Height: 0.281 INCHES NOMINAL IN; Fastener Length: 2.143 INCHES MINIMUM AND 2.163 INCHES MAXIMUM IN; Surface Treatment Document and Classification: NAS672 NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.528 INCHES NOMINAL IN. 17 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.