The Nut,plain,cap, cataloged under National Stock Number 5310-01-625-1980, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Hydrema U.s., Inc. Dba Hydrema Us Inc. 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-625-1980 |
| Primary Part Number | 550304 |
| Item Name | Nut,plain,cap |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Hydrema U.s., Inc. Dba Hydrema Us Inc |
| Status | ACTIVE |
| Width Across Flats | 10.0 MILLIMETERS NOMINAL MM |
| Thread Series | M |
| Thread Pitch in Millimeters | 1.0 |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 6.0 MILLIMETERS MM |
| Nut Height | 12.0 MILLIMETERS NOMINAL MM |
| Surface Treatment | ZINC OVERALL |
| Nut Style | CAP |
| Thread Class | 6H |
| Material | STEEL OVERALL |
| Bearing Surface Type | FLAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5310-01-625-1980 is a Nut,plain,cap, manufactured by Hydrema U.s., Inc. Dba Hydrema Us Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-625-1980 has 2 manufacturer part numbers on file: 91880A045 (Mcmaster-Carr Supply Co), 550304 (Hydrema U.s., Inc. Dba Hydrema Us Inc).
1 possible match (shared part number, not a government interchangeability claim): 5985-01-626-6627. Verify interchangeability with system specifications before substitution.
Key specifications for 550304: Width Across Flats: 10.0 MILLIMETERS NOMINAL MM; Thread Series: M; Thread Pitch in Millimeters: 1.0; Thread Direction: RIGHT-HAND. 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.