The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-502-4667, 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 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-502-4667 |
| Primary Part Number | ST3M744-6D43 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.210 INCHES NOMINAL IN |
| Fastener Length | 3.068 INCHES MINIMUM AND 3.088 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.391 INCHES NOMINAL IN |
| Shank Unthreaded Hole Diameter | 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM OVERALL IN |
| Criticality Code Justification | AGAV |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | SPLINE DRIVE SHEAR HEAD |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.688 INCHES NOMINAL IN |
| Head Minor Diameter | 0.578 INCHES MINIMUM AND 0.585 INCHES MAXIMUM IN |
| Grip Diameter | 0.374 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 2.970 INCHES MINIMUM AND 3.196 INCHES MAXIMUM OVERALL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| ST3M744-6D43 | Heartland Precision Fasteners Inc (USA) |
| GS10156D43 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| WC7446D43 | West Coast Aerospace, Inc. (USA) |
| 1228956D43 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| AIC687-6D43 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M744-6D43 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M7446D43 | Houston Precision Fasteners I Lp (USA) |
| PBF1265-6D43 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| VS31746D43 | Huck International, Inc (USA) |
| VCG0001-6D43 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| VS3174-6D43 | Howmet Global Fastening Systems Inc (USA) |
| 118236D43 | Reid Products Inc. Dba Reid Products Inc (USA) |
| ST3M744-6D43 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| SLB748-6D43 | 5/9 Secondary reference Altek Systems Inc |
| 122895-6D43 | 5/2 Secondary reference U.S. Government activity |
| VS31746D43 | 5/2 Secondary reference U.S. Government activity |
| 122895-6D43 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5306-01-502-4667 is a Bolt,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-502-4667 has 13 manufacturer part numbers on file: ST3M744-6D43 (Heartland Precision Fasteners Inc), GS10156D43 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), WC7446D43 (West Coast Aerospace, Inc.), 1228956D43 (Sps Technologies, Llc Dba PB Fasteners), AIC687-6D43 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 8 more.
Key specifications for ST3M744-6D43: Head Height: 0.210 INCHES NOMINAL IN; Fastener Length: 3.068 INCHES MINIMUM AND 3.088 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.391 INCHES NOMINAL 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.