The Nut,plain,plate, cataloged under National Stock Number 5310-01-256-5212, 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 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-256-5212 |
| Primary Part Number | F22A8-82 |
| Item Name | Nut,plain,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| Plate Thickness | 0.075 INCHES MAXIMUM0.075 INCHES MAXIMUM IN |
| Nut Length | 0.969 INCHES NOMINAL0.969 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNJCUNJC |
| Plate Width | 0.391 INCHES NOMINAL0.391 INCHES NOMINAL IN |
| Temp Rating | 450.0 FAHRENHEIT MAXIMUM450.0 FAHRENHEIT MAXIMUM DEGF |
| Mounting Hole Arrangement Style | 2 HOLES2 HOLES |
| Mounting Hole Diameter | 0.098 INCHES MINIMUM AND 0.098 INCHES MINIMUM AND 0.105 INCHES MAXIMUM0.105 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HANDRIGHT-HAND |
| Nominal Thread Size | 0.164 INCHES0.164 INCHES IN |
| Distance From Aperture Center to Mounting Hole Center | 0.339 INCHES MINIMUM AND 0.339 INCHES MINIMUM AND 0.349 INCHES MAXIMUM0.349 INCHES MAXIMUM IN |
| Center to Center Distance Between Mounting Holes Along Length | 0.686 INCHES MINIMUM AND 0.686 INCHES MINIMUM AND 0.690 INCHES MAXIMUM0.690 INCHES MAXIMUM IN |
| Nut Height | 0.125 INCHES NOMINAL0.125 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Nut Style | PLATEPLATE |
| Thread Class | 2B2B |
| Thread Quantity Per Inch | 3232 |
| Material | STEEL OVERALL |
| Nut Mounting Provision | STRAIGHT HOLESSTRAIGHT 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 |
|---|---|
| F22A8-82 PRIMARY | Esna, Llc (USA) |
| GN500S832A | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| F22A8-82 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-01-256-5212 is a Nut,plain,plate, manufactured by Esna, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-256-5212 has 2 manufacturer part numbers on file: F22A8-82 (Esna, Llc), GN500S832A (Northrop Grumman Systems Corporation).
Key specifications for F22A8-82: Plate Thickness: 0.075 INCHES MAXIMUM0.075 INCHES MAXIMUM IN; Nut Length: 0.969 INCHES NOMINAL0.969 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNJCUNJC. 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.