The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-375-0601, 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 17 specifications, cited from the U.S. Government catalog. The record lists 15 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-375-0601 |
| Primary Part Number | VS3060-5-28 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Extended Washer Thickness | 0.072 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN |
| Head Height | 0.338 INCHES MINIMUM AND 0.358 INCHES MAXIMUM IN |
| Fastener Length | 2.286 INCHES MINIMUM AND 2.316 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.521 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN |
| Thread Length | 0.468 INCHES MINIMUM AND 0.551 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.750 INCHES NOMINAL IN |
| Width Between Flats | 0.376 INCHES NOMINAL IN |
| Grip Diameter | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP XM-13 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 |
|---|---|
| S371-5-28 | Huck International, Inc (USA) |
| 11831-5-28 | Reid Products Inc. Dba Reid Products Inc (USA) |
| S11-1059-5-28 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| ST3M571-5-28 | Saturn Fasteners Inc (USA) |
| MB84-5-28 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M571-5-28 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| MB84-5-28 | Hi-Shear Corporation (USA) |
| VAL23033-5-28 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| GS1030-5-28 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| ST3M571-5-28 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 74328-5-28 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M571-5-28 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| VS3060-5-28 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| AIC752-5-28 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M571-5-28 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| S371-5-28 | 5/9 Secondary reference U.S. Government activity |
| VS3060-5-28 | 5/9 Secondary reference U.S. Government activity |
| ST3M571-5-28 | 5/2 Secondary reference U.S. Government activity |
| BM3326-5-28 | 5/9 Secondary reference Deutsch Co the |
NSN 5306-01-375-0601 is a Bolt,close Tolerance, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-375-0601 has 15 manufacturer part numbers on file: S371-5-28 (Huck International, Inc), 11831-5-28 (Reid Products Inc. Dba Reid Products Inc), S11-1059-5-28 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), ST3M571-5-28 (Saturn Fasteners Inc), MB84-5-28 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 10 more.
Key specifications for VS3060-5-28: Extended Washer Thickness: 0.072 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN; Head Height: 0.338 INCHES MINIMUM AND 0.358 INCHES MAXIMUM IN; Fastener Length: 2.286 INCHES MINIMUM AND 2.316 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 17 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.