The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-164-4459, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 9 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-164-4459 |
| Primary Part Number | AIC687-6D33 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Head Height | 0.210 INCHES NOMINAL IN |
| Fastener Length | 3.443 INCHES MINIMUM AND 3.463 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 FIRST HOLE IN |
| 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 | 3.052 INCHES MINIMUM AND 3.072 INCHES MAXIMUM IN |
| Width Between Flats | 0.578 INCHES MINIMUM AND 0.585 INCHES MAXIMUM IN |
| Grip Diameter | 0.3740 INCHES MINIMUM AND 0.3745 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 | 3.325 INCHES MINIMUM AND 3.355 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 |
|---|---|
| AIC687-6D33 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| VS3174-6D33 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M744-6D33 PRIMARY | The Boeing Company Div Defense (USA) |
| PBF1265-6D33 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| S406-6D33 PRIMARY | Huck International, Inc (USA) |
| VCG0001-6D33 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| MB154-6D33 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 11823-6D33 | Reid Products Inc. Dba Reid Products Inc (USA) |
| MB154-6D33 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| 122895-6D33 | 3/2 Design control — primary reference U.S. Government activity |
| VS3174-6D33 | 5/9 Secondary reference U.S. Government activity |
| S406-6D33 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-164-4459 is a Bolt,close Tolerance, manufactured by Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-164-4459 has 9 manufacturer part numbers on file: AIC687-6D33 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), VS3174-6D33 (Howmet Global Fastening Systems Inc), ST3M744-6D33 (The Boeing Company Div Defense), PBF1265-6D33 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), S406-6D33 (Huck International, Inc) and 4 more.
Key specifications for AIC687-6D33: Head Height: 0.210 INCHES NOMINAL IN; Fastener Length: 3.443 INCHES MINIMUM AND 3.463 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.