The Ring,piston, cataloged under National Stock Number 4310-00-267-5652, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Epd. 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-00-267-5652 |
| Primary Part Number | 807187-16 |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| FSC Application Data | VERTICAL SIMPLEX PUMP |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.0500 INCHES MINIMUM AND 0.0550 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 1.000 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 |
|---|---|
| 807187-16 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| 49-001-948 | 5/9 Secondary reference National Oilwell |
| S30521APC77 | 5/9 Secondary reference Usx Corp Defense Systems Group |
| S-30154-77 | 5/9 Secondary reference Usx Corp Defense Systems Group |
| 807187-16 | 3/9 Design control — primary reference U.S. Government activity |
| 27 | 5/9 Secondary reference Usx Corp Defense Systems Group |
| 49003160 | 5/9 Secondary reference Usx Corp Defense Systems Group |
| S30154 | 5/9 Secondary reference Usx Corp Defense Systems Group |
| S30522APC77 | 5/9 Secondary reference Usx Corp Defense Systems Group |
NSN 4310-00-267-5652 is a Ring,piston, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-00-267-5652 has 1 manufacturer part number on file: 807187-16 (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
Key specifications for 807187-16: FSC Application Data: VERTICAL SIMPLEX PUMP; Overall Width: 0.1235 INCHES MINIMUM AND 0.1240 INCHES MAXIMUM 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.