The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-266-7362, 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 9 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-266-7362 |
| Primary Part Number | ST3M747-3-8 |
| 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 | 0.815 INCHES MINIMUM AND 0.862 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.405 INCHES MINIMUM AND 0.472 INCHES MAXIMUM 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 | 0.390 INCHES MINIMUM AND 0.410 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 |
|---|---|
| ST3M747-3-8 | Heartland Precision Fasteners Inc (USA) |
| MB155-3-8 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| MB155-3-8 | Hi-Shear Corporation (USA) |
| ST3M747-3-8 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| PBF1266-3-8 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| AIC688-3-8 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M747-3-8 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M747-3-8 PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M747-3-8 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| VS3191-3-8 | 5/9 Secondary reference U.S. Government activity |
| VCG0002-3-8 | C/1 Advisory reference — outside the item-of-supply concept Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| 10163818 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| VCG002-3-8 | 5/9 Secondary reference Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| S397-3-8 | 5/9 Secondary reference U.S. Government activity |
| 122896-3-8 | 5/2 Secondary reference U.S. Government activity |
| VS3191-3-8 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| S397-3-8 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
NSN 5306-01-266-7362 is a Bolt,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-266-7362 has 9 manufacturer part numbers on file: ST3M747-3-8 (Heartland Precision Fasteners Inc), MB155-3-8 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), MB155-3-8 (Hi-Shear Corporation), ST3M747-3-8 (Fastener Innovation Technology, Inc. Dba F I T), PBF1266-3-8 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners) and 4 more.
Key specifications for ST3M747-3-8: Head Height: 0.140 INCHES NOMINAL IN; Fastener Length: 0.815 INCHES MINIMUM AND 0.862 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.405 INCHES MINIMUM AND 0.472 INCHES MAXIMUM 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.