The Nut,plain,cone Seat,hexagon, cataloged under National Stock Number 5310-01-099-0383, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Am General Llc. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-099-0383 |
| Primary Part Number | MA219-21074 |
| Item Name | Nut,plain,cone Seat,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Am General Llc |
| Status | ACTIVE |
| Width Across Flats | 0.250 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.164 INCHES IN |
| Cone Seat Angle | 30.0 DEGREES NOMINAL |
| Nut Height | 0.250 INCHES NOMINAL IN |
| Surface Treatment | NICKEL OVERALL |
| Nut Style | CONE SEAT, HEXAGON |
| 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 |
|---|---|
| MA219-21074 PRIMARY | Am General Llc (USA) |
| Reference | Meaning |
|---|---|
| 31551 | 3/9 Design control — primary reference Concord Instruments Corp |
NSN 5310-01-099-0383 is a Nut,plain,cone Seat,hexagon, manufactured by Am General Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-099-0383 has 1 manufacturer part number on file: MA219-21074 (Am General Llc).
1 possible match (shared part number, not a government interchangeability claim): 2620-01-708-1820. Verify interchangeability with system specifications before substitution.
Key specifications for MA219-21074: Width Across Flats: 0.250 INCHES NOMINAL IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.164 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.