The Pin,piston, cataloged under National Stock Number 4310-00-471-0065, 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 Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions. Government technical data includes 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4310-00-471-0065 |
| Primary Part Number | 3W21933 |
| Item Name | Pin,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| Status | ACTIVE |
| Hole Arrangement Style | TWO HOLES IN SOLID PIN |
| Hole Depth | 0.5937 INCHES NOMINAL IN |
| First Hole Diameter | 0.2812 INCHES NOMINAL IN |
| Outside Diameter | 1.18750 INCHES NOMINAL IN |
| Second Hole Diameter | 0.2812 INCHES NOMINAL IN |
| Body Length | 2.9375 INCHES NOMINAL IN |
| Center to Center Distance Between Holes | 2.2500 INCHES NOMINAL IN |
| Distance From Centerline of Hole to End of Pin | 0.343 INCHES NOMINAL 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 |
|---|---|
| 3W21933 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 3W21933 PRIMARY | Ingersoll-Rand Company Dba Ingersoll-Rand (USA) |
| Reference | Meaning |
|---|---|
| 3W21933 | 5/9 Secondary reference Ingersoll Rand Co |
| 3W21933 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 3W21933 | 5/9 Secondary reference U.S. Government activity |
NSN 4310-00-471-0065 is a Pin,piston, manufactured by Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-00-471-0065 has 2 manufacturer part numbers on file: 3W21933 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 3W21933 (Ingersoll-Rand Company Dba Ingersoll-Rand).
Key specifications for 3W21933: Hole Arrangement Style: TWO HOLES IN SOLID PIN; Hole Depth: 0.5937 INCHES NOMINAL IN; First Hole Diameter: 0.2812 INCHES NOMINAL IN; Outside Diameter: 1.18750 INCHES NOMINAL IN. 8 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.