The Nut,self-Locking,plate, cataloged under National Stock Number 5310-01-245-4077, 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 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-245-4077 |
| Primary Part Number | 52LHTA57M-02 |
| Item Name | Nut,self-Locking,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| Plate Thickness | 0.032 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN |
| Nut Length | 0.745 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 1,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNF |
| Plate Width | 0.322 INCHES MAXIMUM IN |
| Temp Rating | 900.0 FAHRENHEIT MAXIMUM DEGF |
| Mounting Hole Arrangement Style | 2 HOLES |
| Mounting Hole Diameter | 0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Distance From Aperture Center to Mounting Hole Center | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN |
| Center to Center Distance Between Mounting Holes Along Length | 0.217 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN |
| Nut Height | 0.205 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | PLATE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 52LHTA57M-02 PRIMARY | Esna, Llc (USA) |
| Reference | Meaning |
|---|---|
| 52LHTA57M-02 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-01-245-4077 is a Nut,self-Locking,plate, manufactured by Esna, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-245-4077 has 1 manufacturer part number on file: 52LHTA57M-02 (Esna, Llc).
Key specifications for 52LHTA57M-02: Plate Thickness: 0.032 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN; Nut Length: 0.745 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 1,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNF. 19 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.