The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-586-8979, 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 13 specifications, cited from the U.S. Government catalog. The record lists 13 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-586-8979 |
| Primary Part Number | VS3191-6-13 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Head Height | 0.210 INCHES NOMINAL IN |
| Fastener Length | 1.328 INCHES NOMINAL IN |
| Thread Length | 0.516 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | SPLINE DRIVE SHEAR HEAD |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.812 INCHES NOMINAL IN |
| Head Minor Diameter | 0.582 INCHES NOMINAL IN |
| Grip Diameter | 0.374 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| ST3M747-6-13 | Huck International, Inc (USA) |
| ST3M747-6-13 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| VS3191-6-13 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M747-6-13 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| 11833-6-13 | Reid Products Inc. Dba Reid Products Inc (USA) |
| ST3M747-6-13 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| VCG0002-6-13 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| AIC688-6-13 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M747-6-13 | Houston Precision Fasteners I Lp (USA) |
| ST3M747-6-13 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M747-6-13 | Hi-Shear Corporation (USA) |
| ST3M747-6-13 | Heartland Precision Fasteners Inc (USA) |
| ST3M747-6-13 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| Reference | Meaning |
|---|---|
| ST3M747-6-13 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| ST3M747-6-13 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-586-8979 is a Bolt,close Tolerance, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-586-8979 has 13 manufacturer part numbers on file: ST3M747-6-13 (Huck International, Inc), ST3M747-6-13 (Sps Technologies, Llc Dba PB Fasteners), VS3191-6-13 (Howmet Global Fastening Systems Inc), ST3M747-6-13 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), 11833-6-13 (Reid Products Inc. Dba Reid Products Inc) and 8 more.
Key specifications for VS3191-6-13: Head Height: 0.210 INCHES NOMINAL IN; Fastener Length: 1.328 INCHES NOMINAL IN; Thread Length: 0.516 INCHES NOMINAL IN; Nominal Thread Diameter: 0.375 INCHES IN. 13 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.