The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-655-6150, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Lord Corporation Dba Lord Corp. Government technical data includes 11 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-655-6150 |
| Primary Part Number | RC27-31 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Lord Corporation Dba Lord Corp |
| Status | ACTIVE |
| Width Across Flats | 0.625 INCHES NOMINAL IN |
| Thread Series | UNF |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.438 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.453 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 1117 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 |
|---|---|
| RC27-31 PRIMARY | Lord Corporation Dba Lord Corp (USA) |
NSN 5310-00-655-6150 is a Nut,self-Locking,hexagon, manufactured by Lord Corporation Dba Lord Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-655-6150 has 1 manufacturer part number on file: RC27-31 (Lord Corporation Dba Lord Corp).
Key specifications for RC27-31: Width Across Flats: 0.625 INCHES NOMINAL IN; Thread Series: UNF; Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL; 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.