The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-355-4851, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 21 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-355-4851 |
| Primary Part Number | SP53029-4 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Washer Outside Diameter | 0.611 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS2410 ASSN STD SINGLE TREATMENT RESPONSE THREADS |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Precious Material | SILVER |
| Temp Rating | 500.0 FAHRENHEIT MAXIMUM DEGF |
| Hardness Rating | 45.0 ROCKWELL C MAXIMUM |
| Washer Thickness | 0.040 INCHES NOMINAL IN |
| Material Document and Classification | AMS5662 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5663 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Material Document and Classification | MIL-R-46198 TY 1 MIL SPEC SINGLE MATERIAL RESPONSE LOCKING INSERT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Surface Treatment | SILVER THREADS |
| Precious Material and Location | THREADS SILVER |
| Drive Point Quantity | 14 |
| Nut Style | SPLINE DRIVE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | PLASTIC POLYAMIDE NYLON LOCKING INSERT |
| 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 | N |
| Part Number | Manufacturer |
|---|---|
| SP53029-4 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| 83592V-428 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| LSVS64-4 PRIMARY | Esna, Llc (USA) |
| Reference | Meaning |
|---|---|
| 3D0015-4 | 3/2 Design control — primary reference U.S. Government activity |
| LSVS64-4 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-01-355-4851 is a Nut,self-Locking,extended Washer, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-355-4851 has 3 manufacturer part numbers on file: SP53029-4 (Howmet Global Fastening Systems Inc), 83592V-428 (Sps Technologies, Llc Dba PB Fasteners), LSVS64-4 (Esna, Llc).
Key specifications for SP53029-4: Lubrication: DRY FILM LUBRICANT; Overall Height: 0.398 INCHES MAXIMUM IN; Washer Outside Diameter: 0.611 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS2410 ASSN STD SINGLE TREATMENT RESPONSE THREADS. 21 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.