Product Information Thread: BSPT Select a Product Part NumberSizeThread Size ALFM2X1.550mm1-1/2" ALFM2X250mm2" ALFM3.5X389mm3" ALFM3X2.576mm2-1/2" ALFM3X376mm3" ALFM4X4108mm4" ALFM5X5133mm5" ALFM6X6159mm6" ALFM8X8194mm8"