The Ring Set,piston, cataloged under National Stock Number 4310-01-021-6335, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Emglo Products Corp. Government technical data includes 3 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-01-021-6335 |
| Primary Part Number | F133 |
| Item Name | Ring Set,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Emglo Products Corp |
| Status | ACTIVE |
| Ring Set Component Parts | COMPRESSION RING K33 2 EA. AND OIL CONTROL RING K34 1 EA |
| Piston Accommodation Quantity | 1 |
| Standard Bore Diameter | 2.500 INCHES IN |
| 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 |
|---|---|
| F133 PRIMARY | Emglo Products Corp (USA) |
NSN 4310-01-021-6335 is a Ring Set,piston, manufactured by Emglo Products Corp, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-01-021-6335 has 1 manufacturer part number on file: F133 (Emglo Products Corp).
Key specifications for F133: Ring Set Component Parts: COMPRESSION RING K33 2 EA. AND OIL CONTROL RING K34 1 EA; Piston Accommodation Quantity: 1; Standard Bore Diameter: 2.500 INCHES IN. 3 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.