The Nut,plain,rectangular, cataloged under National Stock Number 5310-01-266-9366, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is General Electric Company. Government technical data includes 12 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 | 5310-01-266-9366 |
| Primary Part Number | 1286M78P02 |
| Item Name | Nut,plain,rectangular |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Nut Width | 0.430 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN |
| Nut Length | 0.480 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Material Document and Classification | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Nut Height | 0.430 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN |
| Countersink Angle | 80.0 DEGREES MINIMUM AND 120.0 DEGREES MAXIMUM BOTH ENDS |
| Nut Style | PLAIN, RECTANGULAR |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | IRON ALLOY 660 OVERALL |
| 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 |
|---|---|
| 1286M78P02 PRIMARY | General Electric Company (USA) |
NSN 5310-01-266-9366 is a Nut,plain,rectangular, manufactured by General Electric Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-266-9366 has 1 manufacturer part number on file: 1286M78P02 (General Electric Company).
Key specifications for 1286M78P02: Nut Width: 0.430 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN; Nut Length: 0.480 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Material Document and Classification: AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 12 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.