The Nut,self-Locking,plate, cataloged under National Stock Number 5310-01-009-3979, 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 21 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-009-3979 |
| Primary Part Number | F10986-4 |
| Item Name | Nut,self-Locking,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| Plate Thickness | 0.095 INCHES NOMINAL IN |
| Nut Length | 0.783 INCHES NOMINAL IN |
| Distance From Mounting Hole Center to Base | 0.110 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Plate Width | 0.500 INCHES NOMINAL IN |
| Mounting Hole Arrangement Style | 1 HOLE |
| Material Document and Classification | AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Mounting Hole Diameter | 0.100 INCHES NOMINAL IN |
| Nut Counterbore Depth | 0.062 INCHES NOMINAL NUT IN |
| Features Provided | FLOATING NUT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Counterbore Diameter | 0.259 INCHES NOMINAL NUT IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.281 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Nut Style | PLATE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | IRON ALLOY 660 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 |
|---|---|
| F10986-4 PRIMARY | Esna, Llc (USA) |
| 4034529 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 4015853 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| F10986-4 | 5/9 Secondary reference Harvard Industries Inc |
| 5310PL0751338 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5310-01-009-3979 is a Nut,self-Locking,plate, manufactured by Esna, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-009-3979 has 3 manufacturer part numbers on file: F10986-4 (Esna, Llc), 4034529 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 4015853 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for F10986-4: Plate Thickness: 0.095 INCHES NOMINAL IN; Nut Length: 0.783 INCHES NOMINAL IN; Distance From Mounting Hole Center to Base: 0.110 INCHES NOMINAL IN; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF). 21 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.