The Nut,sleeve, cataloged under National Stock Number 5310-00-033-3055, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Horizon Aerospace Llc Dba Magnetics Division. Government technical data includes 15 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 | 5310-00-033-3055 |
| Primary Part Number | WM21-143 |
| Item Name | Nut,sleeve |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Horizon Aerospace Llc Dba Magnetics Division |
| Status | ACTIVE |
| Flange Width Across Flats | 0.188 INCHES NOMINAL IN |
| Nut Length | 0.060 INCHES NOMINAL IN |
| Flange Thickness | 0.050 INCHES NOMINAL IN |
| Thread Series | UNS |
| Thread Length | 0.100 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Material Document and Classification | QQ-B-611A FED SPEC SINGLE MATERIAL RESPONSE OVERALL A |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.100 INCHES IN |
| Nut Diameter | 0.123 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN |
| Cross-Sectional Shape | HEXAGONAL FLANGE |
| Surface Treatment | NICKEL OVERALL |
| Nut Style | SLEEVE |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 100 |
| Material | COPPER ALLOY 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 |
|---|---|
| WM21-143 PRIMARY | Horizon Aerospace Llc Dba Magnetics Division (USA) |
NSN 5310-00-033-3055 is a Nut,sleeve, manufactured by Horizon Aerospace Llc Dba Magnetics Division, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-033-3055 has 1 manufacturer part number on file: WM21-143 (Horizon Aerospace Llc Dba Magnetics Division).
Key specifications for WM21-143: Flange Width Across Flats: 0.188 INCHES NOMINAL IN; Nut Length: 0.060 INCHES NOMINAL IN; Flange Thickness: 0.050 INCHES NOMINAL IN; Thread Series: UNS. 15 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.