The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-938-3974, 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 14 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-938-3974 |
| Primary Part Number | VCD0020-8-36 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| Status | ACTIVE |
| Head Height | 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN |
| Fastener Length | 2.751 INCHES MINIMUM AND 2.781 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | NAS 672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.516 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.240 INCHES MINIMUM AND 2.260 INCHES MAXIMUM IN |
| Width Between Flats | 0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN |
| Grip Diameter | 0.4982 INCHES MINIMUM AND 0.4991 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| 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 | F |
| Part Number | Manufacturer |
|---|---|
| VCD0020-8-36 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BM17020-8-36A | Huck International, Inc (USA) |
| 92147-8-36 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| PBF1479-8-36A PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| EWSB22-8A36 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| VS2521-8F36 | 5/9 Secondary reference U.S. Government activity |
| GB511B8-36 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| BM55132-8-36 | 5/9 Secondary reference U.S. Government activity |
| VS2521-8F36 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| C081-8-36 | 5/9 Secondary reference U.S. Government activity |
| GB511GG8-36A | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
| EWSB22-8A36 | 5/9 Secondary reference U.S. Government activity |
| AIC516B8-36 | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| BM17020-8-36A | 5/9 Secondary reference U.S. Government activity |
NSN 5306-00-938-3974 is a Bolt,close Tolerance, manufactured by Valley-Todeco, Inc. Dba Arconic Fastening Systems, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-938-3974 has 4 manufacturer part numbers on file: VCD0020-8-36 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), BM17020-8-36A (Huck International, Inc), 92147-8-36 (Sps Technologies, Llc Dba PB Fasteners), PBF1479-8-36A (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners).
Key specifications for VCD0020-8-36: Head Height: 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN; Fastener Length: 2.751 INCHES MINIMUM AND 2.781 INCHES MAXIMUM IN; Surface Treatment Document and Classification: NAS 672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.516 INCHES NOMINAL IN. 14 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.