The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-508-6955, 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 Div PB Fasteners. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 6 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-00-508-6955 |
| Primary Part Number | PBF1041A5U13 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Head Height | 0.187 INCHES NOMINAL IN |
| Fastener Length | 1.137 INCHES MINIMUM AND 1.204 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | STSBS000 FSCM 98897 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.315 INCHES MINIMUM AND 0.402 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN |
| Width Between Flats | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Grip Diameter | 0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Surface Treatment | NICKEL AND CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 132000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP H11 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 |
|---|---|
| PBF1041A5U13 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| VAL23611-5D13 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| VS2978A05U013 | Howmet Global Fastening Systems Inc (USA) |
| AIC2263A05U13 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 11797A05U13 | Reid Products Inc. Dba Reid Products Inc (USA) |
| BM3200-5A13 | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| STSBG000A05U13 | 5/2 Secondary reference U.S. Government activity |
| 68484-5A13 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| VS2978A05U13 | 5/2 Secondary reference U.S. Government activity |
| 68484-5A13 | 3/2 Design control — primary reference U.S. Government activity |
| BM3200-5A13 | 5/9 Secondary reference U.S. Government activity |
| BM32006A13 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-00-508-6955 is a Bolt,close Tolerance, manufactured by Sps Technologies Llc Dba PB Fasteners Div PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-508-6955 has 6 manufacturer part numbers on file: PBF1041A5U13 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), VAL23611-5D13 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), VS2978A05U013 (Howmet Global Fastening Systems Inc), AIC2263A05U13 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 11797A05U13 (Reid Products Inc. Dba Reid Products Inc) and 1 more.
Key specifications for PBF1041A5U13: Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.187 INCHES NOMINAL IN; Fastener Length: 1.137 INCHES MINIMUM AND 1.204 INCHES MAXIMUM IN. 19 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.