The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-522-9021, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Valley-Todeco, Inc. Dba Arconic Fastening Systems. Government technical data includes 19 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-522-9021 |
| Primary Part Number | VAL23611-6D31 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Head Height | 0.210 INCHES NOMINAL IN |
| Fastener Length | 2.312 INCHES MINIMUM AND 2.379 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | STSB5000 FSCM 88630 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.380 INCHES MINIMUM AND 0.451 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.928 INCHES MINIMUM AND 1.948 INCHES MAXIMUM IN |
| Width Between Flats | 0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN |
| Grip Diameter | 0.3735 INCHES MINIMUM AND 0.3745 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 |
|---|---|
| VAL23611-6D31 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BM3200-6A31 | Huck International, Inc (USA) |
| 11797A06U031 | Reid Products Inc. Dba Reid Products Inc (USA) |
| PBF1041A6U31 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| AIC2263A06U031 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| 68484-6A31 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| STSBG000A06U31 | 3/2 Design control — primary reference U.S. Government activity |
| BM32006A31 | 5/9 Secondary reference U.S. Government activity |
| VS2978A06U31 | 5/2 Secondary reference U.S. Government activity |
| AIC2263A06U31 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| BM3200-6A31 | 5/9 Secondary reference U.S. Government activity |
| 68484-6A31 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-522-9021 is a Bolt,close Tolerance, manufactured by Valley-Todeco, Inc. Dba Arconic Fastening Systems, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-522-9021 has 5 manufacturer part numbers on file: VAL23611-6D31 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), BM3200-6A31 (Huck International, Inc), 11797A06U031 (Reid Products Inc. Dba Reid Products Inc), PBF1041A6U31 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), AIC2263A06U031 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company).
Key specifications for VAL23611-6D31: Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.210 INCHES NOMINAL IN; Fastener Length: 2.312 INCHES MINIMUM AND 2.379 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.