The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-129-0577, 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 13 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-129-0577 |
| Primary Part Number | S397-4-17 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.164 INCHES NOMINAL IN |
| Fastener Length | 1.443 INCHES MINIMUM AND 1.490 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.371 INCHES MINIMUM AND 0.438 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 | 1.052 INCHES MINIMUM AND 1.072 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 |
|---|---|
| MB155-4-17 | Hi-Shear Corporation (USA) |
| HP7747-4-17 | Heartland Precision Fasteners Inc (USA) |
| ST3M747-4-17 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| S397-4-17 PRIMARY | Huck International, Inc (USA) |
| ST3M747-4-17 | Reid Products Inc. Dba Reid Products Inc (USA) |
| VS3191-4-17 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| GS1031-4-17 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| AIC688-4-17 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| MB155-4-17 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| VCG0002-4-17 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| PBF1266-4-17 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M747-4-17 PRIMARY | The Boeing Company Div Defense (USA) |
| 122896-4-17 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 10115795 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| S397-4-17 | 5/9 Secondary reference U.S. Government activity |
| ST3M747-4-17 | 5/9 Secondary reference Heartland Precision Fasteners Inc |
| VS3191-4-17 | 5/9 Secondary reference U.S. Government activity |
| 122896-4-17 | 5/2 Secondary reference U.S. Government activity |
| ST3M747 | D/9 Drawing number reference only The Boeing Company Div Defense |
NSN 5306-01-129-0577 is a Bolt,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-129-0577 has 13 manufacturer part numbers on file: MB155-4-17 (Hi-Shear Corporation), HP7747-4-17 (Heartland Precision Fasteners Inc), ST3M747-4-17 (Fastener Innovation Technology, Inc. Dba F I T), S397-4-17 (Huck International, Inc), ST3M747-4-17 (Reid Products Inc. Dba Reid Products Inc) and 8 more.
2 possible matches (shared part number, not a government interchangeability claim): 5306-01-706-9746, 5306-01-706-9783. Verify interchangeability with system specifications before substitution.
Key specifications for S397-4-17: Head Height: 0.164 INCHES NOMINAL IN; Fastener Length: 1.443 INCHES MINIMUM AND 1.490 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.371 INCHES MINIMUM AND 0.438 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.