Ferrule Contact Finish Tin Contact Material Copper Ferrule Diameter 0.15 in Ferrule Material Copper Insertion Length 15/32 in Insulation Color Bare Insulation Material None Maximum Operating Temperature 302 Degrees F Minimum Wire Size 10 AWG Maximum Wire Size 10 AWG Standards CSA C22.2 No 291-14 DIN 46228 Part 1 Barrel Diameter 0.15 in Barrel Finish Tin Plated Barrel Material Copper Compatible Grainger Part Number 376U38 376U39 377M39 38YU65 38YU66 38YU67