The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-462-2748, 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 14 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-462-2748 |
| Primary Part Number | ST3M744-5D19 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.187 INCHES NOMINAL IN |
| Fastener Length | 0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.375 INCHES NOMINAL IN |
| Shank Unthreaded Hole Diameter | 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.3125 INCHES IN |
| Head Style | SPLINE DRIVE SHEAR HEAD |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.688 INCHES NOMINAL IN |
| Head Minor Diameter | 0.514 INCHES MINIMUM AND 0.521 INCHES MAXIMUM IN |
| Grip Diameter | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| 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 | 0.570 INCHES MINIMUM AND 0.580 INCHES MAXIMUM FIRST HOLE 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 |
|---|---|
| WC744-5D19 | West Coast Aerospace, Inc. (USA) |
| VS3174-5D19 | Huck International, Inc (USA) |
| 11823-5D19 | Reid Products Inc. Dba Reid Products Inc (USA) |
| ST3M744-5D19 | Houston Precision Fasteners I Lp (USA) |
| ST3M744-5D19 PRIMARY | The Boeing Company Div Defense (USA) |
| SLB748-5D19 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| PBF1265-5D19 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| GS1015-5D19 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| AIC687-5D19 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| VCG0001-5D19 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M744-5D19 | Heartland Precision Fasteners Inc (USA) |
| ST3M744-5D19 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 122895-5D19 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| VS3174-5D19 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| MB154-5D19 | 5/9 Secondary reference Hi-Shear Corporation |
| 122895-5D19 | 5/2 Secondary reference U.S. Government activity |
| VS3174-5D19 | 5/2 Secondary reference U.S. Government activity |
| S406-5D19 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-462-2748 is a Bolt,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-462-2748 has 14 manufacturer part numbers on file: WC744-5D19 (West Coast Aerospace, Inc.), VS3174-5D19 (Huck International, Inc), 11823-5D19 (Reid Products Inc. Dba Reid Products Inc), ST3M744-5D19 (Houston Precision Fasteners I Lp), ST3M744-5D19 (The Boeing Company Div Defense) and 9 more.
Key specifications for ST3M744-5D19: Head Height: 0.187 INCHES NOMINAL IN; Fastener Length: 0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.375 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.