The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-442-5371, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Lake Shore Systems, Inc.. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-442-5371 |
| Primary Part Number | 2D3-05656 REV A ITEM NO.75 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Lake Shore Systems, Inc. |
| Status | ACTIVE |
| Width Across Flats | 0.865 INCHES MINIMUM AND 0.880 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Temp Rating | 250.0 FAHRENHEIT MINIMUM DEGF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.500 INCHES IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Height | 0.688 INCHES MINIMUM AND 0.718 INCHES MAXIMUM IN |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 13 |
| Material | STEEL COMP 316 OVERALL |
| Bearing Surface Type | CHAMFERED |
| 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 |
|---|---|
| 2D3-05656 REV A ITEM NO.75 PRIMARY | Lake Shore Systems, Inc. (USA) |
| PL2D3-05656 REV B ITEM NO.75 PRIMARY | Lake Shore Systems, Inc. (USA) |
| 8100-1253-0238 PT NO 135 | Bath Iron Works Corporation (USA) |
NSN 5310-01-442-5371 is a Nut,self-Locking,hexagon, manufactured by Lake Shore Systems, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-442-5371 has 3 manufacturer part numbers on file: 2D3-05656 REV A ITEM NO.75 (Lake Shore Systems, Inc.), PL2D3-05656 REV B ITEM NO.75 (Lake Shore Systems, Inc.), 8100-1253-0238 PT NO 135 (Bath Iron Works Corporation).
Key specifications for 2D3-05656 REV A ITEM NO.75: Width Across Flats: 0.865 INCHES MINIMUM AND 0.880 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Temp Rating: 250.0 FAHRENHEIT MINIMUM DEGF; Thread Direction: RIGHT-HAND. 12 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.