The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-327-7875, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 14 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-327-7875 |
| Primary Part Number | NASM21046C20SL1 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Width Across Flats | 1.801 INCHES MINIMUM AND 1.814 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Temp Rating | 800.0 FAHRENHEIT NOMINAL DEGF |
| Supplementary Features | VALVE INDTN X EXH |
| Criticality Code Justification | ZZZY |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.250 INCHES IN |
| Nut Height | 0.795 INCHES NOMINAL IN |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| NASM21046C20SL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 501-4457023 ITEM180L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 6503-86 ITEM 180L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 501-4457023 ITEM180 | 3/1 Design control — primary reference U.S. Government activity |
| NASM21046C20S | 4/1 Identification reference U.S. Government activity |
| 6503-86 ITEM 180 | 5/1 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| MS21046C20SL1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
NSN 5310-01-327-7875 is a Nut,self-Locking,hexagon, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-327-7875 has 3 manufacturer part numbers on file: NASM21046C20SL1 (Naval Inventory Control Point Mechanicsburg), 501-4457023 ITEM180L1 (Naval Inventory Control Point Mechanicsburg), 6503-86 ITEM 180L1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for NASM21046C20SL1: Width Across Flats: 1.801 INCHES MINIMUM AND 1.814 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Temp Rating: 800.0 FAHRENHEIT NOMINAL DEGF. 14 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.