The Nut,sleeve, cataloged under National Stock Number 5310-00-208-4394, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Trico Products Corporation. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-208-4394 |
| Primary Part Number | 78-1ZB |
| Item Name | Nut,sleeve |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Trico Products Corporation |
| Status | ACTIVE |
| Flange Width Across Flats | 0.438 INCHES NOMINAL IN |
| Nut Length | 0.375 INCHES NOMINAL IN |
| Flange Thickness | 0.219 INCHES NOMINAL IN |
| Thread Series | UNEF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Nut Diameter | 0.406 INCHES NOMINAL IN |
| Cross-Sectional Shape | HEXAGONAL FLANGE |
| Nut Style | SLEEVE |
| Thread Class | 2B |
| Thread Quantity Per Inch | 32 |
| 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 |
|---|---|
| 78-1ZB PRIMARY | Trico Products Corporation (USA) |
| Reference | Meaning |
|---|---|
| 2116858 | 5/9 Secondary reference General Motors Corp |
| 2116858 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| 3659582 | 5/9 Secondary reference General Motors Corp |
| 3659582 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
NSN 5310-00-208-4394 is a Nut,sleeve, manufactured by Trico Products Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-208-4394 has 1 manufacturer part number on file: 78-1ZB (Trico Products Corporation).
Key specifications for 78-1ZB: Flange Width Across Flats: 0.438 INCHES NOMINAL IN; Nut Length: 0.375 INCHES NOMINAL IN; Flange Thickness: 0.219 INCHES NOMINAL IN; Thread Series: UNEF. 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.