1-66099-6 is a loose piece pin assembly (Type III+) designed for controlled environment connector applications. The pin features a brass body with a stainless steel spring, and an overall length of 27.10 ±0.51 mm (1.067 ±0.020 in) with a pin diameter of 1.588 +0.025/-0.051 mm (0.0625 +0.0010/-0.0020 in). The mating end is plated with 0.76 µm minimum precious metal over 1.27 µm minimum nickel plate, with gold flash all over, conforming to TE Connectivity Product Spec 108-10042 based on EIA/ECA-364-1000.01A. The assembly accommodates wire ranges of 18-16 AWG with insulation diameter range of 2.03-2.54 mm (0.080-0.100 in). This pin assembly is suitable for reliable electrical connections in controlled environment applications requiring precision contact performance.