The Mission Alloy Axle Nuts are available in 3/8" or 14mm thread sizes and feature 17mm wrench flats. They're sold in pairs and are approximately half the weight of traditional steel nuts.
Thread Pitch: 3/8"x26tpi
Wrench Flat: 17mm
Thread Pitch: 14x1mm
Wrench Flat 17mm
This product is expected to become available for purchase on Tuesday, June 1, 2021