The Ring,piston, cataloged under National Stock Number 4310-00-131-2995, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is M.t. Davidson Company. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-00-131-2995 |
| Primary Part Number | G101PC9 |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | M.t. Davidson Company |
| Status | ACTIVE |
| FSC Application Data | STEAM PISTON,DIRECT ACTING RECIPROCATING PUMP |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.1270 INCHES MINIMUM AND 0.1370 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 3.500 INCHES IN |
| Material | IRON 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 |
|---|---|
| G101PC9 PRIMARY | M.t. Davidson Company (USA) |
| Reference | Meaning |
|---|---|
| 203-3.50X3/16 | 5/9 Secondary reference U.S. Government activity |
NSN 4310-00-131-2995 is a Ring,piston, manufactured by M.t. Davidson Company, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-00-131-2995 has 1 manufacturer part number on file: G101PC9 (M.t. Davidson Company).
Key specifications for G101PC9: FSC Application Data: STEAM PISTON,DIRECT ACTING RECIPROCATING PUMP; Overall Width: 0.1860 INCHES NOMINAL IN; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Joint Style: VERTICAL JOINT. 7 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.