The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-293-0001, 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 19 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-293-0001 |
| Primary Part Number | ST3M744-8D33 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN |
| Fastener Length | 2.506 INCHES MINIMUM AND 2.526 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.434 INCHES MINIMUM AND 0.474 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM ALL HOLES IN |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | SPLINE DRIVE SHEAR HEAD |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.052 INCHES MINIMUM AND 2.072 INCHES MAXIMUM IN |
| Head Minor Diameter | 0.774 INCHES MINIMUM AND 0.782 INCHES MAXIMUM IN |
| Grip Diameter | 0.4990 INCHES MINIMUM AND 0.4995 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 | 2.381 INCHES MINIMUM AND 2.411 INCHES MAXIMUM ALL HOLES 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 |
|---|---|
| PBF1265-8D33 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| VCG0001-8D33 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| MB154-8D33 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M744-8D33 PRIMARY | The Boeing Company Div Defense (USA) |
| MB154-8D33 | Hi-Shear Corporation (USA) |
| 11823-8D33 | Reid Products Inc. Dba Reid Products Inc (USA) |
| AIC687-8D33 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| 10116208 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 122895-8D33 | 5/2 Secondary reference U.S. Government activity |
| VS3174-8D33 | 5/2 Secondary reference U.S. Government activity |
| S406-8D33 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| S406-8D33 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-293-0001 is a Bolt,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-293-0001 has 7 manufacturer part numbers on file: PBF1265-8D33 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), VCG0001-8D33 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), MB154-8D33 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M744-8D33 (The Boeing Company Div Defense), MB154-8D33 (Hi-Shear Corporation) and 2 more.
Key specifications for ST3M744-8D33: Head Height: 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN; Fastener Length: 2.506 INCHES MINIMUM AND 2.526 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.434 INCHES MINIMUM AND 0.474 INCHES MAXIMUM 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.