The Nut,plain,square, cataloged under National Stock Number 5310-00-019-2009, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The W.w. Williams Company, Llc. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-019-2009 |
| Primary Part Number | 192009 |
| Item Name | Nut,plain,square |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The W.w. Williams Company, Llc |
| Status | ACTIVE |
| Width Across Flats | 0.547 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM IN |
| Thread Series | UNF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Nut Height | 0.249 INCHES MINIMUM AND 0.283 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Nut Style | SQUARE |
| Thread Class | 2B |
| Thread Quantity Per Inch | 24 |
| Material | STEEL OVERALL |
| Bearing Surface Type | WASHER FACED |
| 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 |
|---|---|
| 192009 | The W.w. Williams Company, Llc (USA) |
| 192009 | General Motors Llc Dba General Motors Llc (USA) |
| 192009 | Army Weapons Command Attn Amswe-Ree-S (USA) |
| Reference | Meaning |
|---|---|
| 192009 | 3/9 Design control — primary reference General Motors Corp |
| 5310-00-019-2009 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 192009 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
NSN 5310-00-019-2009 is a Nut,plain,square, manufactured by The W.w. Williams Company, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-019-2009 has 3 manufacturer part numbers on file: 192009 (The W.w. Williams Company, Llc), 192009 (General Motors Llc Dba General Motors Llc), 192009 (Army Weapons Command Attn Amswe-Ree-S).
Key specifications for 192009: Width Across Flats: 0.547 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM IN; Thread Series: UNF; Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.312 INCHES IN. 11 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.