The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-168-5400, 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 10 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-168-5400 |
| Primary Part Number | S397-8-36 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.281 INCHES NOMINAL IN |
| Fastener Length | 2.883 INCHES MINIMUM AND 2.930 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.649 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | SPLINE DRIVE SHEAR HEAD |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.240 INCHES MINIMUM AND 2.260 INCHES MAXIMUM IN |
| Head Minor Diameter | 0.778 INCHES NOMINAL IN |
| Grip Diameter | 0.4990 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| 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 |
|---|---|
| ST3M747-8-36 | The Boeing Company Div Defense (USA) |
| MB155-8-36 | Hi-Shear Corporation (USA) |
| S397-8-36 PRIMARY | Huck International, Inc (USA) |
| MB155-8-36 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| VS3191-8-36 | Howmet Global Fastening Systems Inc (USA) |
| VCG0002-8-36 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 11833-8-36 | Reid Products Inc. Dba Reid Products Inc (USA) |
| PBF1266-8-36 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| AIC688-8-36 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 122896-8-36 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 122896-8-36 | 5/2 Secondary reference U.S. Government activity |
| 10130709 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| VS3191-8-36 | 5/9 Secondary reference U.S. Government activity |
| S397-8-36 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-168-5400 is a Bolt,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-168-5400 has 10 manufacturer part numbers on file: ST3M747-8-36 (The Boeing Company Div Defense), MB155-8-36 (Hi-Shear Corporation), S397-8-36 (Huck International, Inc), MB155-8-36 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), VS3191-8-36 (Howmet Global Fastening Systems Inc) and 5 more.
Key specifications for S397-8-36: Head Height: 0.281 INCHES NOMINAL IN; Fastener Length: 2.883 INCHES MINIMUM AND 2.930 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.649 INCHES NOMINAL 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.