The Nut,plain,extended Washer,round, cataloged under National Stock Number 5310-01-340-5672, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 17 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-340-5672 |
| Primary Part Number | 83849N-720 |
| Item Name | Nut,plain,extended Washer,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Washer Outside Diameter | 0.833 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Temp Rating | 250.0 FAHRENHEIT MAXIMUM DEGF |
| Hardness Rating | 45.0 ROCKWELL C MAXIMUM |
| Washer Thickness | 0.070 INCHES MINIMUM IN |
| Material Document and Classification | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5663 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.437 INCHES IN |
| Surface Treatment | PASSIVATE NUT |
| Countersink Angle | 85.0 DEGREES MINIMUM FIRST END |
| Drive Point Quantity | 20 |
| Nut Style | SPLINE DRIVE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | NICKEL ALLOY 718 NUT |
| 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 |
|---|---|
| 83849N-720 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| SP53028-7 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| 3D0014-7 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 3D0014-7 | 7/2 Vendor item drawing reference U.S. Government activity |
| L9NS64-7 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-01-340-5672 is a Nut,plain,extended Washer,round, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-340-5672 has 3 manufacturer part numbers on file: 83849N-720 (Sps Technologies, Llc Dba PB Fasteners), SP53028-7 (Howmet Global Fastening Systems Inc), 3D0014-7 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for 83849N-720: Lubrication: DRY FILM LUBRICANT; Overall Height: 0.602 INCHES MAXIMUM IN; Washer Outside Diameter: 0.833 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE NUT. 17 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.