Piston Nuts Apparatenbouw Product: Piston Nut 3.1/2″-8UN x 85 Material: X39CrMo171 (1.4122) / niflonated coated Desciption: This product is used in one off worlds biggest Reciprocating compressors. Skills Posted on 10 June 2021 ← Tie Bolt M110 with Roller Burnished shaft Twist Screws →