The Ring,piston, cataloged under National Stock Number 4310-01-115-7376, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-01-115-7376 |
| Primary Part Number | 2783739-101 |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics |
| Status | ACTIVE |
| Material Document and Classification | AMS5759 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | BEVELED FACE, UPPER |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.1500 INCHES NOMINAL IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 2.750 INCHES IN |
| Material | COBALT ALLOY OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 2783739-101 | Parker-Hannifin Corporation Dba Service and Support Operation Div Services and Support Operations (USA) |
| 2783739-101 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics (USA) |
| Reference | Meaning |
|---|---|
| 2783739 | 5/9 Secondary reference U.S. Government activity |
| 2783739-101 | 5/2 Secondary reference U.S. Government activity |
NSN 4310-01-115-7376 is a Ring,piston, manufactured by Parker-Hannifin Corporation Dba Pneutronics, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-01-115-7376 has 2 manufacturer part numbers on file: 2783739-101 (Parker-Hannifin Corporation Dba Service and Support Operation Div Services and Support Operations), 2783739-101 (Parker-Hannifin Corporation Dba Pneutronics).
Key specifications for 2783739-101: Overall Width: 0.0335 INCHES NOMINAL IN; Material Document and Classification: AMS5759 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: BEVELED FACE, UPPER; 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.