The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-266-3957, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Amphenol Corp Div Amphenol Aerospace Operations. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-266-3957 |
| Primary Part Number | 10-571913-20G |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Amphenol Corp Div Amphenol Aerospace Operations |
| Status | ACTIVE |
| Width Across Flats | 1.557 INCHES MINIMUM AND 1.567 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | 9-6594,CAGE 77820 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNEF |
| Hole Configuration Style | CONFIGURATION B |
| Material Document and Classification | AMS4118 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4119 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4120 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4150 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.375 INCHES IN |
| Locking Feature | FREE-RUNNING ALL METAL DESIGN |
| Nut Height | 0.118 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN |
| Drilled Hole Diameter | 0.060 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN |
| Surface Treatment | NICKEL OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 18 |
| Material | ALUMINUM ALLOY OVERALL |
| Bearing Surface Type | FLAT |
| Hole Type and Quantity | 3 DRILLED |
| 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 |
|---|---|
| 10-571913-20G PRIMARY | Amphenol Corp Div Amphenol Aerospace Operations (USA) |
NSN 5310-01-266-3957 is a Nut,self-Locking,hexagon, manufactured by Amphenol Corp Div Amphenol Aerospace Operations, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-266-3957 has 1 manufacturer part number on file: 10-571913-20G (Amphenol Corp Div Amphenol Aerospace Operations).
Key specifications for 10-571913-20G: Width Across Flats: 1.557 INCHES MINIMUM AND 1.567 INCHES MAXIMUM IN; Surface Treatment Document and Classification: 9-6594,CAGE 77820 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNEF; Hole Configuration Style: CONFIGURATION B. 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.