Unistrut channel nuts are manufactured from mild steel bars and after machining operations are completed, they are case hardened, assuring positive biting action into the inturned edge of the Unistrut channel. UPC: 786364044828 Manufacturer Part No: RP1006T1420EG Brand Name: Unistrut Trade Size: 1/4 in. Material: Steel Number in Package: 1 pk Product Type: Clamping Nut Fitting Type: Threaded Packaging Type: Bulk CSA Listed: Yes California residents see Prop 65 WARNINGS