The Nut,plain,wing, cataloged under National Stock Number 5310-01-665-9511, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fmc Technologies Inc Dba Fmc Fluid Control. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-665-9511 |
| Primary Part Number | 1103891 |
| Item Name | Nut,plain,wing |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fmc Technologies Inc Dba Fmc Fluid Control |
| Status | ACTIVE |
| Body Diameter | 0.547 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Thread Pitch Diameters | +0.271 TO 0.275 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Nut Style | WING |
| Thread Quantity Per Inch | 18 |
| Material | COPPER ALLOY OVERALL |
| Fabrication Method | FORGED |
| Wing Spread Width | 1.250 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5310-01-665-9511 is a Nut,plain,wing, manufactured by Fmc Technologies Inc Dba Fmc Fluid Control, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-665-9511 has 2 manufacturer part numbers on file: 92771A525 (Mcmaster-Carr Supply Co), 1103891 (Fmc Technologies Inc Dba Fmc Fluid Control).
Key specifications for 1103891: Body Diameter: 0.547 INCHES NOMINAL IN; Overall Height: 0.625 INCHES NOMINAL IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Thread Pitch Diameters: +0.271 TO 0.275 INCHES IN. 10 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.