The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-477-5792, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-477-5792 |
| Primary Part Number | VS3174-7D26 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.257 INCHES NOMINAL IN |
| Fastener Length | 2.068 INCHES MINIMUM AND 2.088 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.453 INCHES NOMINAL IN |
| Shank Unthreaded Hole Diameter | 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.4375 INCHES IN |
| Head Style | SPLINE DRIVE SHEAR HEAD |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.625 INCHES NOMINAL IN |
| Head Minor Diameter | 0.711 INCHES MINIMUM AND 0.717 INCHES MAXIMUM IN |
| Grip Diameter | 0.671 INCHES MINIMUM AND 0.703 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.953 INCHES MINIMUM AND 1.963 INCHES MAXIMUM FIRST HOLE IN |
| 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 |
|---|---|
| VS3174-7D26 PRIMARY | Huck International, Inc (USA) |
| ST3M744-7D26 | Houston Precision Fasteners I Lp (USA) |
| PBF1265-7D26 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| AIC687-7D26 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| VS3174-7D26 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| 122895-7D26 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M744-7D26 | The Boeing Company Div Defense (USA) |
| WC744-7D26 | West Coast Aerospace, Inc. (USA) |
| ST3M744-7D26 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| SLB748-7D26 PRIMARY | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| ST3M744-7D26 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| GS1015-7D26 PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| 11823-7D26 | Reid Products Inc. Dba Reid Products Inc (USA) |
| VCG0001-7D26 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| 122895-7D26 | 3/2 Design control — primary reference U.S. Government activity |
| VS3174-7D26 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-477-5792 is a Bolt,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-477-5792 has 14 manufacturer part numbers on file: VS3174-7D26 (Huck International, Inc), ST3M744-7D26 (Houston Precision Fasteners I Lp), PBF1265-7D26 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), AIC687-7D26 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), VS3174-7D26 (Howmet Global Fastening Systems Inc) and 9 more.
Key specifications for VS3174-7D26: Head Height: 0.257 INCHES NOMINAL IN; Fastener Length: 2.068 INCHES MINIMUM AND 2.088 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.453 INCHES NOMINAL 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.