The Nut,plain,round, cataloged under National Stock Number 5310-01-028-4787, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Telemechanics Inc. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-028-4787 |
| Primary Part Number | 402560 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Telemechanics Inc |
| Status | ACTIVE |
| Thread Series | UNF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.134 INCHES IN |
| Nut Diameter | 0.500 INCHES NOMINAL IN |
| Nut Thickness | 0.065 INCHES NOMINAL IN |
| Nut Style | ROUND |
| Thread Class | 2B |
| Thread Quantity Per Inch | 40 |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 402560 PRIMARY | Telemechanics Inc (USA) |
| Reference | Meaning |
|---|---|
| 402560 | 5/9 Secondary reference American Telephone and Telegraph Co |
NSN 5310-01-028-4787 is a Nut,plain,round, manufactured by Telemechanics Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-028-4787 has 1 manufacturer part number on file: 402560 (Telemechanics Inc).
2 possible matches (shared part number, not a government interchangeability claim): 6625-01-180-6542, 1710-01-493-7483. Verify interchangeability with system specifications before substitution.
Key specifications for 402560: Thread Series: UNF; Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.134 INCHES IN; Nut Diameter: 0.500 INCHES NOMINAL IN. 9 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.