The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-476-1174, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-476-1174 |
| Primary Part Number | ST3M744-3-8 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.140 INCHES NOMINAL IN |
| Fastener Length | 0.766 INCHES MINIMUM AND 0.786 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.276 INCHES NOMINAL IN |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | SPLINE DRIVE SHEAR HEAD |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Head Minor Diameter | 0.383 INCHES MINIMUM AND 0.389 INCHES MAXIMUM IN |
| Grip Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| 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 |
|---|---|
| ST3M744-3-8 PRIMARY | The Boeing Company Div Defense (USA) |
| SLB748-3-8 PRIMARY | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| VCG0001-3-8 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M744-3-8 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| VS3174-3-8 | Howmet Global Fastening Systems Inc (USA) |
| 122895-3-8 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| GS1015-3-8 PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| 11823-3-8 PRIMARY | Reid Products Inc. Dba Reid Products Inc (USA) |
| PBF1265-3-8 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| WC744-3-8 | West Coast Aerospace, Inc. (USA) |
| ST3M744-3-8 | Houston Precision Fasteners I Lp (USA) |
| VS3174-3-8 PRIMARY | Huck International, Inc (USA) |
| VS3174-3-8 | Howmet Global Fastening Systems Inc. Div Voi-Shan Products (USA) |
| AIC687-3-8 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M744-3-8 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| Reference | Meaning |
|---|---|
| 122895-3-8 | 5/2 Secondary reference U.S. Government activity |
| 122895-3-8 | 5/9 Secondary reference Sps Technologies Inc |
| VS3174-3-8 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-476-1174 is a Bolt,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-476-1174 has 15 manufacturer part numbers on file: ST3M744-3-8 (The Boeing Company Div Defense), SLB748-3-8 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), VCG0001-3-8 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), ST3M744-3-8 (Fastener Innovation Technology, Inc. Dba F I T), VS3174-3-8 (Howmet Global Fastening Systems Inc) and 10 more.
Key specifications for ST3M744-3-8: Head Height: 0.140 INCHES NOMINAL IN; Fastener Length: 0.766 INCHES MINIMUM AND 0.786 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.276 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.