The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-409-3701, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 16 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-409-3701 |
| Primary Part Number | 709-8540939 ITEM 010-5 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Width Across Flats | 0.492 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN |
| Bearing Surface Finish | 125.0 MICROINCHES |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Temp Rating | 250.0 FAHRENHEIT NOMINAL DEGF |
| Material Document and Classification | ASTM D4066,CPMP A,TYPE 1 ASSN STD SINGLE MATERIAL RESPONSE LOCKING INSERT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Height | 0.271 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN |
| Countersink Angle | 88.0 DEGREES NOMINAL NUT |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 18 |
| Material | NICKEL ALLOY 400 OR NICKEL ALLOY R-405 NUT |
| Material | PLASTIC POLYHEXAMETHYLENE AMIDE LOCKING INSERT |
| Bearing Surface Type | CHAMFERED OR WASHER FACED |
| 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 |
|---|---|
| 09NE518 | Greer Stop Nut, Inc. (USA) |
| 709-8540939 ITEM 010-5 PRIMARY | Naval Sea Systems Command (USA) |
| 09NE-058(MONEL) | Esna, Llc (USA) |
| Reference | Meaning |
|---|---|
| MS17828-5C | 3/2 Design control — primary reference U.S. Government activity |
| 09NE058 | 5/9 Secondary reference Harvard Industries Inc |
| MS17828-5C | 5/9 Secondary reference U.S. Government activity |
| 67A4C2 | C/1 Advisory reference — outside the item-of-supply concept Clark Equipment Co Div Doosan Infracore Portable Power |
| 0.312-18UNC-3B NICU | 4/1 Identification reference U.S. Government activity |
| 09NE-058(MONEL) | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-00-409-3701 is a Nut,self-Locking,hexagon, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-409-3701 has 3 manufacturer part numbers on file: 09NE518 (Greer Stop Nut, Inc.), 709-8540939 ITEM 010-5 (Naval Sea Systems Command), 09NE-058(MONEL) (Esna, Llc).
3 possible matches (shared part number, not a government interchangeability claim): 5310-01-292-3297, 5310-01-345-7147, 5310-01-540-9573. Verify interchangeability with system specifications before substitution.
Key specifications for 709-8540939 ITEM 010-5: Width Across Flats: 0.492 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN; Bearing Surface Finish: 125.0 MICROINCHES; Thread Series: UNIFIED NATIONAL COARSE (UNC); Temp Rating: 250.0 FAHRENHEIT NOMINAL DEGF. 16 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.