The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-503-5693, 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through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-503-5693 |
| Primary Part Number | STSBG000A06U046 |
| 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 | 3.259 INCHES MINIMUM AND 3.306 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | STSBS000 FSCM 98897 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.384 INCHES MINIMUM AND 0.431 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 | 2.875 INCHES NOMINAL 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 |
|---|---|
| STSBG000A06U046 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| STSBG000A06U046 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 11797A06U046 | Reid Products Inc. Dba Reid Products Inc (USA) |
| STSBG000A06U046 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| STSBG000A06U046 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| BM3200-6A046 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| BM3200-6A046 | 5/9 Secondary reference U.S. Government activity |
| 68484-6A46 | 5/9 Secondary reference Sps Technologies Inc |
| AIC2263A06U046 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| PBF1041A6U046 | 5/9 Secondary reference Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| VS2978A06U046 | 5/9 Secondary reference U.S. Government activity |
| VS2978A06U046 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| STSBG000A06U046 | 3/2 Design control — primary reference U.S. Government activity |
| VAL23611-6D046 | 5/9 Secondary reference Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| 68484-6A46 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| STSBG000A06U046 | 5/9 Secondary reference Fleet Mfg Co Inc |
NSN 5306-00-503-5693 is a Bolt,close Tolerance, manufactured by Valley-Todeco, Inc. Dba Arconic Fastening Systems, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-503-5693 has 5 manufacturer part numbers on file: STSBG000A06U046 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), STSBG000A06U046 (Sps Technologies, Llc Dba PB Fasteners), 11797A06U046 (Reid Products Inc. Dba Reid Products Inc), STSBG000A06U046 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), STSBG000A06U046 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company).
Key specifications for STSBG000A06U046: Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.210 INCHES NOMINAL IN; Fastener Length: 3.259 INCHES MINIMUM AND 3.306 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.