The Nut,plain,round, cataloged under National Stock Number 5310-00-754-2022, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Circor Naval Solutions Llc Dba Warren Pumps. Government technical data includes 19 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. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-754-2022 |
| Primary Part Number | F181 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Circor Naval Solutions Llc Dba Warren Pumps |
| Status | ACTIVE |
| Hole Thread Quantity Per Inch | 16 |
| Thread Series | UN |
| Hole Configuration Style | CONFIGURATION F |
| Material Document and Classification | QQ-C-390,TYPE 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nut Counterbore Depth | 0.625 INCHES NOMINAL NUT IN |
| Thread Direction | LEFT-HAND |
| Nominal Thread Size | 2.000 INCHES IN |
| Nut Diameter | 3.125 INCHES NOMINAL IN |
| Counterbore Diameter | 2.031 INCHES NOMINAL NUT IN |
| Drive Point Depth | 1.094 INCHES NOMINAL IN |
| Nut Thickness | 2.000 INCHES NOMINAL IN |
| Drive Point Diameter | 0.281 INCHES NOMINAL IN |
| Drive Point Quantity | 2 |
| Nut Style | ROUND |
| Thread Class | 2B |
| Hole Nominal Thread Diameter | 0.375 INCHES IN |
| Thread Quantity Per Inch | 12 |
| Material | COPPER ALLOY 903 OVERALL |
| Hole Type and Quantity | 1 TAPPED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5310-00-754-2022 is a Nut,plain,round, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-754-2022 has 3 manufacturer part numbers on file: R869ITEM8 (Circor Naval Solutions Llc Dba Warren Pumps), F181 (Circor Naval Solutions Llc Dba Warren Pumps), R851PC6 (Circor Naval Solutions Llc Dba Warren Pumps).
2 possible matches (shared part number, not a government interchangeability claim): 5120-01-350-0989, 5120-01-661-6782. Verify interchangeability with system specifications before substitution.
Key specifications for F181: Hole Thread Quantity Per Inch: 16; Thread Series: UN; Hole Configuration Style: CONFIGURATION F; Material Document and Classification: QQ-C-390,TYPE 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 19 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.