The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-526-7398, 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 17 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-526-7398 |
| Primary Part Number | VS3174-4D19 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.164 INCHES NOMINAL IN |
| Fastener Length | 1.494 INCHES MINIMUM AND 1.514 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.316 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | SPLINE DRIVE SHEAR HEAD |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.188 INCHES NOMINAL IN |
| Head Minor Diameter | 0.448 INCHES MINIMUM AND 0.455 INCHES MAXIMUM IN |
| Grip Diameter | 0.249 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| 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 |
|---|---|
| VS3174-4D19 PRIMARY | Huck International, Inc (USA) |
| VCG0001-4D19 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 11823-4D19 PRIMARY | Reid Products Inc. Dba Reid Products Inc (USA) |
| WC744-4D19 PRIMARY | West Coast Aerospace, Inc. (USA) |
| 122895-4D19 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| PBF1265-4D19 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| SLB748-4D19 PRIMARY | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| AIC687-4D19 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M744-4D19 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| VS3174-4D19 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M744-4D19 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| GS1015-4D19 PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| ST3M744-4D19 PRIMARY | Houston Precision Fasteners I Lp (USA) |
| Reference | Meaning |
|---|---|
| ST3M744-4D19 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| 122895-4D19 | 3/2 Design control — primary reference U.S. Government activity |
| VS3174-4D19 | 3/2 Design control — primary reference U.S. Government activity |
| 122895-4D19 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5306-01-526-7398 is a Bolt,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-526-7398 has 13 manufacturer part numbers on file: VS3174-4D19 (Huck International, Inc), VCG0001-4D19 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), 11823-4D19 (Reid Products Inc. Dba Reid Products Inc), WC744-4D19 (West Coast Aerospace, Inc.), 122895-4D19 (Sps Technologies, Llc Dba PB Fasteners) and 8 more.
Key specifications for VS3174-4D19: Head Height: 0.164 INCHES NOMINAL IN; Fastener Length: 1.494 INCHES MINIMUM AND 1.514 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.316 INCHES NOMINAL IN. 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.