The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-462-2852, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Heartland Precision Fasteners Inc. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-462-2852 |
| Primary Part Number | ST3M744-3D13 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Heartland Precision Fasteners Inc |
| Status | ACTIVE |
| Head Height | 0.140 INCHES NOMINAL IN |
| Fastener Length | 1.0735 INCHES MINIMUM AND 1.1035 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.276 INCHES NOMINAL IN |
| Shank Unthreaded Hole Diameter | 0.070 INCHES MINIMUM AND 0.075 INCHES MAXIMUM FASTENER IN |
| Criticality Code Justification | AGAV |
| Material Document and Classification | AMS 5629 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 | 0.813 INCHES NOMINAL IN |
| Head Minor Diameter | 0.383 INCHES MINIMUM AND 0.389 INCHES MAXIMUM IN |
| Grip Diameter | 0.359 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 0.966 INCHES MINIMUM AND 0.986 INCHES MAXIMUM FASTENER 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 |
|---|---|
| ST3M744-3D13 | Houston Precision Fasteners I Lp (USA) |
| PBF1265-3D13 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| VS3174-3D13 | Howmet Global Fastening Systems Inc (USA) |
| ST3M744-3D13 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| ST3M744-3D13 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| AIC687-3D13 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| GS1015-3D13 PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| SLB748-3D13 PRIMARY | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| WC744-3D13 | West Coast Aerospace, Inc. (USA) |
| 11823-3D13 | Reid Products Inc. Dba Reid Products Inc (USA) |
| ST3M744-3D13 PRIMARY | The Boeing Company Div Defense (USA) |
| VCG0001-3D13 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| VS3174-3D13 PRIMARY | Huck International, Inc (USA) |
| 122895-3D13 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 122895-3D13 | 5/2 Secondary reference U.S. Government activity |
| VS3174-3D13 | 5/2 Secondary reference U.S. Government activity |
| MB154-3D13 | 5/9 Secondary reference Hi-Shear Corporation |
| S406-3D13 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-462-2852 is a Bolt,close Tolerance, manufactured by Heartland Precision Fasteners Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-462-2852 has 14 manufacturer part numbers on file: ST3M744-3D13 (Houston Precision Fasteners I Lp), PBF1265-3D13 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), VS3174-3D13 (Howmet Global Fastening Systems Inc), ST3M744-3D13 (Heartland Precision Fasteners Inc), ST3M744-3D13 (Fastener Innovation Technology, Inc. Dba F I T) and 9 more.
Key specifications for ST3M744-3D13: Head Height: 0.140 INCHES NOMINAL IN; Fastener Length: 1.0735 INCHES MINIMUM AND 1.1035 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.276 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.