BENTLY NEVADA · 21000 SERIES 21000-34-05-00-015-04-02 Proximity Probe Housing Assembly Penetration 1.5 in / 38 mm Standoff None Mounting 3/4-14 NPT Housing Aluminum Configured Assembly 3300 XL 8 mm Connector Protector 0.5 m Cable 02 Overview The 21000 is a Bently Nevada proximity probe housing assembly for externally mounted proximity-probe installations. This part number identifies one specific factory configuration rather than a generic 21000 housing. Part Focus Exact