The Ring,piston, cataloged under National Stock Number 4310-00-400-2115, 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 9 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-00-400-2115 |
| Primary Part Number | 1533P |
| 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 | PISTON,STEAM,DIRECT ACTING PUMP |
| Bore Diameter Oversize | 0.010 INCHES IN |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, TWO PIECE, STRAIGHT FACE, W/RESTRAINER |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.3150 INCHES MINIMUM AND 0.3350 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 10.000 INCHES IN |
| Material | IRON BOTTOM |
| Material | COPPER ALLOY TOP |
| 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 |
|---|---|
| 8611PX8612P | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 1533P PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| 8611PX8612P | 5/9 Secondary reference U.S. Government activity |
| 1533P | 3/9 Design control — primary reference U.S. Government activity |
| B3204776 | 5/9 Secondary reference U.S. Government activity |
NSN 4310-00-400-2115 is a Ring,piston, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-00-400-2115 has 2 manufacturer part numbers on file: 8611PX8612P (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 1533P (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
Key specifications for 1533P: FSC Application Data: PISTON,STEAM,DIRECT ACTING PUMP; Bore Diameter Oversize: 0.010 INCHES IN; Overall Width: 0.8690 INCHES MINIMUM AND 0.8720 INCHES MAXIMUM IN; Cross-Sectional Shape Style: PLAIN RECTANGULAR, TWO PIECE, STRAIGHT FACE, W/RESTRAINER. 9 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.