The Nut,self-Locking,plate, cataloged under National Stock Number 5310-01-334-3639, 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 27 specifications, cited from the U.S. Government catalog. The record lists 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-334-3639 |
| Primary Part Number | F18427L1-6 |
| Item Name | Nut,self-Locking,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Plate Thickness | 0.046 INCHES MINIMUM AND 0.054 INCHES MAXIMUM IN |
| Nut Length | 1.441 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Plate Width | 0.454 INCHES MAXIMUM IN |
| Temp Rating | 450.0 FAHRENHEIT NOMINAL DEGF |
| Mounting Hole Arrangement Style | 2 HOLES |
| Removable Nut Manufacturer Part Number | G18421L1-6 |
| Mounting Hole Diameter | 0.130 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Nut Counterbore Depth | 0.070 INCHES MINIMUM BASE IN |
| Features Provided | FLOATING NUT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Counterbore Diameter | 0.379 INCHES MINIMUM BASE IN |
| Distance From Aperture Center to Mounting Hole Center | 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Center to Center Distance Between Mounting Holes Along Length | 0.310 INCHES MINIMUM AND 0.314 INCHES MAXIMUM IN |
| Nut Height | 0.380 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Nut Style | PLATE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| Material | IRON ALLOY 660 SHELL |
| Material | IRON ALLOY 660 NUT |
| Material | STEEL CORROSION RESISTING CLIP |
| Nut Mounting Provision | STRAIGHT HOLES |
| Removable Nut Manufacturer Code | 72962 |
| 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 |
|---|---|
| F13743-1-6 | Esna, Llc (USA) |
| 03A169-6A1 | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| F18427L1-6 PRIMARY | Esna, Llc (USA) |
| 03A169-6A1 | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| F52890-6-1 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| NRF160C6M-1 PRIMARY | Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| F18427L1-6 | 5/9 Secondary reference Harvard Industries Inc |
| F13743-1-6 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-01-334-3639 is a Nut,self-Locking,plate, manufactured by Esna, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-334-3639 has 6 manufacturer part numbers on file: F13743-1-6 (Esna, Llc), 03A169-6A1 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems), F18427L1-6 (Esna, Llc), 03A169-6A1 (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems), F52890-6-1 (Howmet Global Fastening Systems Inc) and 1 more.
Key specifications for F18427L1-6: Lubrication: DRY FILM LUBRICANT; Plate Thickness: 0.046 INCHES MINIMUM AND 0.054 INCHES MAXIMUM IN; Nut Length: 1.441 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF). 27 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.