The Ring,wearing, cataloged under National Stock Number 4320-00-101-3705, 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 20 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 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 | 4320-00-101-3705 |
| Primary Part Number | C102A |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Circor Naval Solutions Llc Dba Warren Pumps |
| Status | ACTIVE |
| Center Flange Thickness | 0.250 INCHES NOMINAL IN |
| Corner Shape | SQUARE OUTSIDE RIGHT CORNER |
| Corner Shape | SQUARE OUTSIDE LEFT CORNER |
| Corner Shape | SQUARE INSIDE LEFT CORNER |
| Corner Shape | ROUND INSIDE RIGHT CORNER |
| Distance Between Flanges | 0.375 INCHES NOMINAL IN |
| Corner Radius | 0.187 INCHES NOMINAL INSIDE RIGHT CORNER IN |
| Body Style | EXTERNAL LOCKING FLANGE |
| Body Outside Diameter | 3.250 INCHES NOMINAL IN |
| End to Flange Distance | 0.187 INCHES NOMINAL IN |
| Groove Depth | 0.062 INCHES NOMINAL IN |
| Left Side Flange Thickness | 0.125 INCHES NOMINAL IN |
| Distance Below Centerline | 0.093 INCHES NOMINAL IN |
| Body Inside Diameter | 2.875 INCHES NOMINAL IN |
| Right Side Flange Thickness | 0.125 INCHES NOMINAL IN |
| Smallest External Anchor Flange Radius | 1.593 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Internal Flange Width | 0.187 INCHES NOMINAL IN |
| Largest External Anchor Flange Radius | 1.812 INCHES NOMINAL IN |
| Groove Width | 0.031 INCHES NOMINAL IN |
| 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 |
|---|---|
| C102A PRIMARY | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
NSN 4320-00-101-3705 is a Ring,wearing, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-101-3705 has 1 manufacturer part number on file: C102A (Circor Naval Solutions Llc Dba Warren Pumps).
1 possible match (shared part number, not a government interchangeability claim): 4940-01-013-1986. Verify interchangeability with system specifications before substitution.
Key specifications for C102A: Center Flange Thickness: 0.250 INCHES NOMINAL IN; Corner Shape: SQUARE OUTSIDE RIGHT CORNER; Corner Shape: SQUARE OUTSIDE LEFT CORNER; Corner Shape: SQUARE INSIDE LEFT CORNER. 20 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.