The Bolt,shoulder, cataloged under National Stock Number 5306-00-448-7446, 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 21 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-00-448-7446 |
| Primary Part Number | C4356CR9-925 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN |
| Fastener Length | 1.449 INCHES MINIMUM AND 1.469 INCHES MAXIMUM IN |
| Shoulder Length | 0.915 INCHES MINIMUM AND 0.935 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-C-320 FED SPEC 1ST TREATMENT RESPONSE OR NAS 672 ASSN STD 2ND TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.5610 INCHES MINIMUM AND 0.5620 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.399 INCHES MINIMUM AND 0.419 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 49.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.741 INCHES MINIMUM AND 0.751 INCHES MAXIMUM IN |
| Surface Treatment | CHROMIUM OR CADMIUM OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP H11 OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.219 INCHES MINIMUM AND 1.239 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 |
|---|---|
| C4356CR9-925 | Huck International, Inc (USA) |
| C4356CR9-925 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| C4356CR9-925 | Sage Systems Inc (USA) |
| C4356CR9-925 | Arthur H. Thomas Company (USA) |
| Reference | Meaning |
|---|---|
| C4356CR9-925 | 3/2 Design control — primary reference U.S. Government activity |
| C4356CR9-925 | 5/9 Secondary reference U.S. Government activity |
| C4356CR9-925 | 5/2 Secondary reference U.S. Government activity |
| AIC4356CR9925 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| C4356CR9-925 | 5/2 Secondary reference U.S. Government activity |
| C4356CR9-925 | 5/9 Secondary reference Deutsch Fastener Corp |
NSN 5306-00-448-7446 is a Bolt,shoulder, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-448-7446 has 4 manufacturer part numbers on file: C4356CR9-925 (Huck International, Inc), C4356CR9-925 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), C4356CR9-925 (Sage Systems Inc), C4356CR9-925 (Arthur H. Thomas Company).
Key specifications for C4356CR9-925: Head Height: 0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN; Fastener Length: 1.449 INCHES MINIMUM AND 1.469 INCHES MAXIMUM IN; Shoulder Length: 0.915 INCHES MINIMUM AND 0.935 INCHES MAXIMUM FIRST SHOULDER IN; Surface Treatment Document and Classification: QQ-C-320 FED SPEC 1ST TREATMENT RESPONSE OR NAS 672 ASSN STD 2ND TREATMENT RESPONSE OVERALL. 21 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.