... , Aluminum alloy or stainless steel 3, G,NPT, METRIC thread YHXe Series Explosion Proof Conduit Box (e)ApplicationDesigned for explosive atmosphere ... resistance: WF1Selection Table TypePipe thread (G)Nominal diameter (mm)Shapes YHXe-G1/2"1/215A(C)B(T)C(X)D ... (LL)E(LR)F(LB)G(TB)H(LU)YHXe-G3/4"3/420YHXe-G1 "125YHXe-G1 1/4"1 ...