The Nut,plain,round, cataloged under National Stock Number 5310-00-185-6397, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is General Dynamics Mission Systems, Inc.. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 7 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-185-6397 |
| Primary Part Number | C31-10091-4 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | General Dynamics Mission Systems, Inc. |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNS |
| Hardness Rating | 66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM |
| Thread Pitch Diameters | +0.6437 TO 0.6467 INCHES IN |
| Drive Point Width | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.664 INCHES IN |
| Nut Diameter | 1.105 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN |
| Drive Point Depth | 0.094 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | 1 TYPE AND 3 CLASS |
| Nut Thickness | 1.110 INCHES MINIMUM AND 1.130 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Drive Point Quantity | 4 |
| Nut Style | ROUND |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 1005 OVERALL |
| 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 |
|---|---|
| C31-10091-4 PRIMARY | General Dynamics Mission Systems, Inc. (USA) |
| N03CADMIUMPLATED | The Timken Corporation (USA) |
| 7593649 | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
| 3379612 | General Motors Llc Dba General Motors Llc (USA) |
| 21283 | Fairbanks Morse, Llc (USA) |
| 203-1010P4 | Raytheon Company Div Corp (USA) |
| N03CADMIUMPLATED | Whittet-Higgins Company (USA) |
| Reference | Meaning |
|---|---|
| 21283 | 5/9 Secondary reference U.S. Government activity |
| 203-1010P4 | 5/2 Secondary reference U.S. Government activity |
| 21283 | 5/9 Secondary reference Prestolite Electric Inc |
| MILN21337 | 4/1 Identification reference U.S. Government activity |
| 3379612 | 5/9 Secondary reference General Motors Corp |
| 3379612 | 5/9 Secondary reference Prestolite Electric Inc |
NSN 5310-00-185-6397 is a Nut,plain,round, manufactured by General Dynamics Mission Systems, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-185-6397 has 7 manufacturer part numbers on file: C31-10091-4 (General Dynamics Mission Systems, Inc.), N03CADMIUMPLATED (The Timken Corporation), 7593649 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate), 3379612 (General Motors Llc Dba General Motors Llc), 21283 (Fairbanks Morse, Llc) and 2 more.
6 possible matches (shared part number, not a government interchangeability claim): 5945-00-193-3517, 5950-00-407-6348, 2805-00-422-6069. Verify interchangeability with system specifications before substitution.
Key specifications for C31-10091-4: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNS; Hardness Rating: 66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM; Thread Pitch Diameters: +0.6437 TO 0.6467 INCHES 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.