The Nut,plain,extended Washer,hexago, cataloged under National Stock Number 5310-01-623-1855, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Te-Co Manufacturing Llc Dba Te-Co Manufacturing Llc. 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 | 5310-01-623-1855 |
| Primary Part Number | 61602 |
| Item Name | Nut,plain,extended Washer,hexago |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Te-Co Manufacturing Llc Dba Te-Co Manufacturing Llc |
| Status | ACTIVE |
| Washer Outside Diameter | 19.00 MILLIMETERS NOMINAL MM |
| Width Across Flats | 13.00 MILLIMETERS NOMINAL MM |
| Thread Series | M |
| Thread Pitch in Millimeters | 1.25 |
| Thread Pitch Diameters | -1.250 TO 1.251 MILLIMETERS MM |
| Washer Thickness | 2.5 MILLIMETERS NOMINAL MM |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 8.0 MILLIMETERS MM |
| Surface Treatment | BLACK OXIDE OVERALL |
| Nut Style | HEXAGON |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5310-01-623-1855 is a Nut,plain,extended Washer,hexago, manufactured by Te-Co Manufacturing Llc Dba Te-Co Manufacturing Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-623-1855 has 2 manufacturer part numbers on file: 61602 (Te-Co Manufacturing Llc Dba Te-Co Manufacturing Llc), 91005A035 (Mcmaster-Carr Supply Co).
Key specifications for 61602: Overall Height: 10.00 MILLIMETERS NOMINAL MM; Washer Outside Diameter: 19.00 MILLIMETERS NOMINAL MM; Width Across Flats: 13.00 MILLIMETERS NOMINAL MM; Thread Series: M. 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.