The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-128-8940, 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 21 specifications, cited from the U.S. Government catalog. The record lists 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-128-8940 |
| Primary Part Number | ST3M744-7H59 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.247 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN |
| Fastener Length | 4.130 INCHES MINIMUM AND 4.150 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.432 INCHES MINIMUM AND 0.472 INCHES MAXIMUM IN |
| Hole Configuration Style | SPLINE |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.438 INCHES IN |
| Head Style | SPLINE DRIVE SHEAR HEAD |
| Thread Direction | RIGHT-HAND |
| Grip Length | 3.678 INCHES MINIMUM AND 3.698 INCHES MAXIMUM IN |
| Head Minor Diameter | 0.711 INCHES MINIMUM AND 0.717 INCHES MAXIMUM IN |
| Grip Diameter | 0.4365 INCHES MINIMUM AND 0.4370 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 |
| Hole Quantity | 1 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.065 INCHES MINIMUM AND 0.075 INCHES MAXIMUM 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 |
|---|---|
| PBF1265-7H59 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M744-7H59 | Howmet Global Fastening Systems Inc (USA) |
| AIC687-7H59 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| VCG0001-7H59 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| MB154-7H59 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| S406-7H59 | Huck International, Inc (USA) |
| ST3M744-7H59 PRIMARY | The Boeing Company Div Defense (USA) |
| MB154-7H59 | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| 122895-7H59 | 5/2 Secondary reference U.S. Government activity |
| S406-7H59 | 5/9 Secondary reference U.S. Government activity |
| VS3174-7H59 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-128-8940 is a Bolt,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-128-8940 has 8 manufacturer part numbers on file: PBF1265-7H59 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), ST3M744-7H59 (Howmet Global Fastening Systems Inc), AIC687-7H59 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), VCG0001-7H59 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), MB154-7H59 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 3 more.
Key specifications for ST3M744-7H59: Head Height: 0.247 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN; Fastener Length: 4.130 INCHES MINIMUM AND 4.150 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.432 INCHES MINIMUM AND 0.472 INCHES MAXIMUM IN. 21 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.