The Nut,plain,extended Washer,hexago, cataloged under National Stock Number 5310-01-616-5300, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fastenal Company Dba Fastenal Co. Government technical data includes 11 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-616-5300 |
| Primary Part Number | 10388-02673 |
| Item Name | Nut,plain,extended Washer,hexago |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fastenal Company Dba Fastenal Co |
| Status | ACTIVE |
| Washer Outside Diameter | 40.3 MILLIMETERS NOMINAL MM |
| Width Across Flats | 27.0 MILLIMETERS NOMINAL MM |
| Surface Treatment Document and Classification | POLYTETRAFLUOROETHYLENE COATED - 240 HOUR SALT SPRAY MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | M |
| Thread Pitch in Millimeters | 1.5 |
| Hardness Rating | 28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 18.0 MILLIMETERS MM |
| Nut Style | HEXAGON |
| Material | STEEL COMP 1045 NUT |
| Material | STEEL COMP 4140 WASHER |
| 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 |
|---|---|
| 10388-02673 PRIMARY | Fastenal Company Dba Fastenal Co (USA) |
| CC-0010472 | Independent Rough Terrain Center Llc (USA) |
NSN 5310-01-616-5300 is a Nut,plain,extended Washer,hexago, manufactured by Fastenal Company Dba Fastenal Co, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-616-5300 has 2 manufacturer part numbers on file: 10388-02673 (Fastenal Company Dba Fastenal Co), CC-0010472 (Independent Rough Terrain Center Llc).
Key specifications for 10388-02673: Overall Height: 25.0 MILLIMETERS NOMINAL MM; Washer Outside Diameter: 40.3 MILLIMETERS NOMINAL MM; Width Across Flats: 27.0 MILLIMETERS NOMINAL MM; Surface Treatment Document and Classification: POLYTETRAFLUOROETHYLENE COATED - 240 HOUR SALT SPRAY MFR REF SINGLE TREATMENT RESPONSE OVERALL. 11 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.