The Ring,piston, cataloged under National Stock Number 4310-00-101-2798, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is J.w. Harley Inc.. Government technical data includes 6 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-00-101-2798 |
| Primary Part Number | 158013 |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | J.w. Harley Inc. |
| Status | ACTIVE |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Joint Style | STEP JOINT |
| Radial Wall Thickness | 0.0930 INCHES NOMINAL IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 4.408 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 |
|---|---|
| 158013 PRIMARY | J.w. Harley Inc. (USA) |
| Reference | Meaning |
|---|---|
| RNG-1658 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| RNG01658 | 5/9 Secondary reference Atlas Copco Holyoke Inc |
| 4641N | C/1 Advisory reference — outside the item-of-supply concept Atlas Copco Holyoke Inc |
| RNG01658A | 5/9 Secondary reference Atlas Copco Holyoke Inc |
| RNG1658 | 5/9 Secondary reference U.S. Government activity |
| XRING1658 | 5/9 Secondary reference U.S. Government activity |
| 4641N | 5/9 Secondary reference U.S. Government activity |
NSN 4310-00-101-2798 is a Ring,piston, manufactured by J.w. Harley Inc., classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-00-101-2798 has 1 manufacturer part number on file: 158013 (J.w. Harley Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 3040-00-767-2313, 5331-00-977-3585. Verify interchangeability with system specifications before substitution.
Key specifications for 158013: Overall Width: 0.0629 INCHES NOMINAL IN; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Joint Style: STEP JOINT; Radial Wall Thickness: 0.0930 INCHES NOMINAL IN. 6 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.