The Nut,plain,clinch, cataloged under National Stock Number 5310-01-331-3139, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Gc/waldom Inc. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-331-3139 |
| Primary Part Number | 6742C-SS-3124-7 |
| Item Name | Nut,plain,clinch |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Gc/waldom Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNF |
| Hardness Rating | 207.0 BRINELL HULTGREN MAXIMUM |
| Material Document and Classification | QQ-S-763,COND A FED SPEC 1ST MATERIAL RESPONSE OR ASTM A582,COND A ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Nut Counterbore Depth | 0.354 INCHES MINIMUM AND 0.364 INCHES MAXIMUM SECOND END IN |
| Nut Counterbore Depth | 0.588 INCHES MINIMUM AND 0.603 INCHES MAXIMUM FIRST END IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.3125 INCHES IN |
| Nut Diameter | 0.493 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN |
| Counterbore Diameter | 0.374 INCHES MINIMUM AND 0.380 INCHES MAXIMUM FIRST END IN |
| Counterbore Diameter | 0.438 INCHES MINIMUM AND 0.443 INCHES MAXIMUM SECOND END IN |
| Pilot Diameter | 0.432 INCHES MINIMUM AND 0.435 INCHES MAXIMUM IN |
| Pilot Length | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Nut Height | 1.062 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Countersink Angle | 45.0 DEGREES NOMINAL BOTH ENDS |
| Nut Style | CLINCH |
| Thread Class | 2B |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 302 OR STEEL COMP 303 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 |
|---|---|
| 6742C-SS-3124-7 | Gc/waldom Inc (USA) |
| 580R869H15 | Unicorp. (USA) |
| Reference | Meaning |
|---|---|
| 580R869H15 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-331-3139 is a Nut,plain,clinch, manufactured by Gc/waldom Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-331-3139 has 2 manufacturer part numbers on file: 6742C-SS-3124-7 (Gc/waldom Inc), 580R869H15 (Unicorp.).
Key specifications for 6742C-SS-3124-7: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNF; Hardness Rating: 207.0 BRINELL HULTGREN MAXIMUM; Material Document and Classification: QQ-S-763,COND A FED SPEC 1ST MATERIAL RESPONSE OR ASTM A582,COND A ASSN STD 2ND MATERIAL RESPONSE OVERALL. 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.