SWG Standoffs Spacer sleeves 618705 - SWG 974 8 30 67, SWG manufactures spacer sleeves with the part number 974 8 30 67. These spacer sleeves are 30 mm long, have an M8 diameter, and are made of steel with a zinc-plated finish. They are typically used in applications requiring precise spacing and alignment of components in assemblies. SWG 974 8 30 67 Spacer Sleeves 30mm M8 Steel Zinc-Plated 25 pcs