The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-385-5419, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-00-385-5419 |
| Primary Part Number | VS3071-9F33 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Head Height | 0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN |
| Fastener Length | 2.636 INCHES MINIMUM AND 2.683 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | NAS 672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.564 INCHES MINIMUM AND 0.631 INCHES MAXIMUM IN |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.562 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.052 INCHES MINIMUM AND 2.072 INCHES MAXIMUM IN |
| Width Between Flats | 0.865 INCHES MINIMUM AND 0.877 INCHES MAXIMUM IN |
| Grip Diameter | 0.5607 INCHES MINIMUM AND 0.5616 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| 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 |
|---|---|
| VS3071-9F33 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| EWSB22D9A33 PRIMARY | Hi-Shear Corporation (USA) |
| EWSB22D9A33 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| Reference | Meaning |
|---|---|
| BM17020-9A33 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| BM17020-9A33 | 5/9 Secondary reference U.S. Government activity |
| VS3071-9F33 | 5/9 Secondary reference U.S. Government activity |
| GB511B9-33 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
| EWSB22-9-33 | C/1 Advisory reference — outside the item-of-supply concept Hi-Shear Corporation |
NSN 5306-00-385-5419 is a Bolt,close Tolerance, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-385-5419 has 3 manufacturer part numbers on file: VS3071-9F33 (Howmet Global Fastening Systems Inc), EWSB22D9A33 (Hi-Shear Corporation), EWSB22D9A33 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc).
Key specifications for VS3071-9F33: Head Height: 0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN; Fastener Length: 2.636 INCHES MINIMUM AND 2.683 INCHES MAXIMUM IN; Surface Treatment Document and Classification: NAS 672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.564 INCHES MINIMUM AND 0.631 INCHES MAXIMUM IN. 18 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.