The Ring,wearing, cataloged under National Stock Number 4320-00-770-0296, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Circor Naval Solutions Llc Dba Warren Pumps. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-770-0296 |
| Primary Part Number | B133A |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Circor Naval Solutions Llc Dba Warren Pumps |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES ALL SURFACES |
| Corner Shape | SQUARE OUTSIDE RIGHT CORNER |
| Corner Shape | SQUARE OUTSIDE LEFT CORNER |
| Corner Shape | SQUARE INSIDE LEFT CORNER |
| Corner Shape | CHAMFERED INSIDE RIGHT CORNER |
| Chamfer Length | 0.062 INCHES NOMINAL INSIDE RIGHT CORNER IN |
| Body Style | PLAIN |
| Body Outside Diameter | 3.434 INCHES NOMINAL IN |
| Groove Depth | 0.031 INCHES NOMINAL IN |
| Groove Quantity | 2 |
| Body Inside Diameter | 3.062 INCHES MINIMUM AND 3.064 INCHES MAXIMUM IN |
| Mounting Hole Nominal Thread Size | 0.119 INCHES IN |
| Chamfer Angle | 45.0 DEGREES NOMINAL INSIDE RIGHT CORNER |
| Material | STEEL |
| Groove Width | 0.125 INCHES NOMINAL IN |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4320-00-770-0296 is a Ring,wearing, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-770-0296 has 2 manufacturer part numbers on file: B133A (Circor Naval Solutions Llc Dba Warren Pumps), R-816 PC9 (Circor Naval Solutions Llc Dba Warren Pumps).
Key specifications for B133A: Surface Finish: 125.0 MICROINCHES ALL SURFACES; Corner Shape: SQUARE OUTSIDE RIGHT CORNER; Corner Shape: SQUARE OUTSIDE LEFT CORNER; Corner Shape: SQUARE INSIDE LEFT CORNER. 16 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.