The Ring,piston, cataloged under National Stock Number 4310-00-101-2810, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Atlas Copco Holyoke Inc. 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-00-101-2810 |
| Primary Part Number | RNG1659 |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Atlas Copco Holyoke Inc |
| Status | ACTIVE |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Joint Style | STEP JOINT |
| Radial Wall Thickness | 0.1560 INCHES NOMINAL IN |
| Ring Style | CONCENTRIC |
| Surface Treatment | ANODIZE OVERALL |
| Standard Bore Diameter | 3.750 INCHES IN |
| Material | STEEL 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 |
|---|---|
| RNG1659 | Atlas Copco Holyoke Inc (USA) |
| Reference | Meaning |
|---|---|
| 4645N | 5/9 Secondary reference U.S. Government activity |
| 4645N | 3/9 Design control — primary reference Siemens Energy, Inc. Dba Dresser-Rand |
| RNG1659 | 5/9 Secondary reference U.S. Government activity |
| 4645N | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| RNG-1659 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4310-00-101-2810 is a Ring,piston, manufactured by Atlas Copco Holyoke Inc, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-00-101-2810 has 1 manufacturer part number on file: RNG1659 (Atlas Copco Holyoke Inc).
Key specifications for RNG1659: Overall Width: 0.0938 INCHES NOMINAL IN; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Joint Style: STEP JOINT; Radial Wall Thickness: 0.1560 INCHES NOMINAL IN. 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.