The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-162-7893, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 11 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-162-7893 |
| Primary Part Number | S406-4-10 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.154 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN |
| Fastener Length | 0.931 INCHES MINIMUM AND 0.951 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.296 INCHES MINIMUM AND 0.336 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | SPLINE DRIVE SHEAR HEAD |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN |
| Head Minor Diameter | 0.448 INCHES MINIMUM AND 0.455 INCHES MAXIMUM IN |
| Grip Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| ST3M744-4-10 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M744-4-10 | Heartland Precision Fasteners Inc (USA) |
| VCG0001-4-10 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| PBF1265-4-10 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M744-4-10 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| S406-4-10 PRIMARY | Huck International, Inc (USA) |
| ST3M744-4-10 | Hi-Shear Corporation (USA) |
| AIC687-4-10 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| VS3174-4-10 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M744-4-10 PRIMARY | The Boeing Company Div Defense (USA) |
| GS1015-4-10 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| Reference | Meaning |
|---|---|
| 10116038 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| MB154-4-10 | 5/9 Secondary reference Hi-Shear Corporation |
| ST3M744-4-10 | 5/2 Secondary reference U.S. Government activity |
| VS3174-4-10 | 5/9 Secondary reference U.S. Government activity |
| S406-4-10 | 5/9 Secondary reference U.S. Government activity |
| 122895-4-10 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-162-7893 is a Bolt,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-162-7893 has 11 manufacturer part numbers on file: ST3M744-4-10 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M744-4-10 (Heartland Precision Fasteners Inc), VCG0001-4-10 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), PBF1265-4-10 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), ST3M744-4-10 (Fastener Innovation Technology, Inc. Dba F I T) and 6 more.
Key specifications for S406-4-10: Head Height: 0.154 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN; Fastener Length: 0.931 INCHES MINIMUM AND 0.951 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.296 INCHES MINIMUM AND 0.336 INCHES MAXIMUM IN. 16 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.