The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-135-3513, 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 20 specifications, cited from the U.S. Government catalog. The record lists 12 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-135-3513 |
| Primary Part Number | S397-4-7 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Head Height | 0.164 INCHES NOMINAL IN |
| Fastener Length | 0.738 INCHES MINIMUM AND 0.785 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.290 INCHES MINIMUM AND 0.357 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 | 0.428 INCHES MINIMUM AND 0.448 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 |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| 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 |
|---|---|
| S397-4-7 PRIMARY | Huck International, Inc (USA) |
| VS3191-4-7 | Howmet Global Fastening Systems Inc (USA) |
| ST3M747-4-7 PRIMARY | The Boeing Company Div Defense (USA) |
| HP7747-4-7 | Heartland Precision Fasteners Inc (USA) |
| 11833-4-7 | Reid Products Inc. Dba Reid Products Inc (USA) |
| PBF1266-4-7 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| MB155-4-7 | Hi-Shear Corporation (USA) |
| ST3M747-4-7 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| AIC688-4-7 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| VCG0002-4-7 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| MB155-4-7 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| GS1031-4-7 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| Reference | Meaning |
|---|---|
| S397-4-7 | 5/9 Secondary reference U.S. Government activity |
| 122896-4-7 | 5/2 Secondary reference U.S. Government activity |
| 10115936 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| VS3191-4-7 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-135-3513 is a Bolt,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-135-3513 has 12 manufacturer part numbers on file: S397-4-7 (Huck International, Inc), VS3191-4-7 (Howmet Global Fastening Systems Inc), ST3M747-4-7 (The Boeing Company Div Defense), HP7747-4-7 (Heartland Precision Fasteners Inc), 11833-4-7 (Reid Products Inc. Dba Reid Products Inc) and 7 more.
Key specifications for S397-4-7: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.164 INCHES NOMINAL IN. 20 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.