The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-381-9728, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Esna, Llc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-381-9728 |
| Primary Part Number | 49NU-3212 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| Thread Quantity Per Inch | 12 |
| Nut Style | HEXAGON |
| Material | PLASTIC POLYAMIDE NYLON LOCKING INSERT |
| Bearing Surface Type | CHAMFERED |
| Surface Treatment | ZINC AND CHROMATE OVERALL EXCEPT INSERT |
| Nominal Thread Size | 2.000 INCHES IN |
| Material | STEEL NUT |
| Width Across Flats | 3.086 INCHES MINIMUM AND 3.137 INCHES MAXIMUM IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Temp Rating | 250.0 FAHRENHEIT MAXIMUM DEGF |
| Thread Series | UN |
| Nut Height | 2.343 INCHES MINIMUM AND 2.469 INCHES MAXIMUM IN |
| Thread Class | 3B |
| Thread Direction | RIGHT-HAND |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5310-01-381-9728 is a Nut,self-Locking,hexagon, manufactured by Esna, Llc, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-01-381-9728 has 3 cross-referenced part numbers: 49NU-3212 (Esna, Llc), 49NU-3212 (Harvard Industries Inc), 19760 (Liftking Manufacturing Corp).
There are 6 known substitutes for 5310-01-381-9728: 5330-00-097-3126, 5985-00-708-3705, 4820-01-222-7497 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for 49NU-3212: Thread Quantity Per Inch: 12; Nut Style: HEXAGON; Material: PLASTIC POLYAMIDE NYLON LOCKING INSERT; Bearing Surface Type: CHAMFERED. 15 total characteristics are documented in the Federal Logistics Information System.