The Nut,self-Locking,plate, cataloged under National Stock Number 5310-00-238-8458, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Esna, Llc. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-238-8458 |
| Primary Part Number | RMLHA8887-40 |
| Item Name | Nut,self-Locking,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Plate Thickness | 0.025 INCHES NOMINAL IN |
| Nut Length | 0.471 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OR QQ-P-416,TYPE 3,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Distance From Mounting Hole Center to Base | 0.230 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Plate Width | 0.266 INCHES NOMINAL IN |
| Mounting Hole Arrangement Style | 2 HOLES |
| Distance From Base to Center of Aperture | 0.156 INCHES NOMINAL IN |
| Mounting Hole Diameter | 0.066 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.112 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Center to Center Distance Between Mounting Holes Along Length | 0.138 INCHES MINIMUM AND 0.142 INCHES MAXIMUM IN |
| Nut Height | 0.147 INCHES NOMINAL IN |
| Thread Class | 3B |
| Thread Quantity Per Inch | 40 |
| Nut Mounting Provision | STRAIGHT HOLES |
| 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 |
|---|---|
| 40-272-659-01 | Meggitt (uk) Ltd Div Meggitt Sensing Systems (GBR) |
| RMLHA8887-40 PRIMARY | Esna, Llc (USA) |
| Reference | Meaning |
|---|---|
| RMLHA8887-40 | 5/9 Secondary reference Harvard Industries Inc |
| 948310-1 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5310-00-238-8458 is a Nut,self-Locking,plate, manufactured by Esna, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-238-8458 has 2 manufacturer part numbers on file: 40-272-659-01 (Meggitt (uk) Ltd Div Meggitt Sensing Systems), RMLHA8887-40 (Esna, Llc).
Key specifications for RMLHA8887-40: Lubrication: DRY FILM LUBRICANT; Plate Thickness: 0.025 INCHES NOMINAL IN; Nut Length: 0.471 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OR QQ-P-416,TYPE 3,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 18 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.