GM M4.2-1.41 X 20mm Hex Washer Head SEMS Tapping Screw - Package Quantity 50
GM M4.2-1.41 X 20mm Hex Washer Head SEMS Tapping Screw • Sems®: A screw/bolt with a free spinning washer attached to it. As the screw is tightened a "wedging action" is produced to create a tight friction locking action. The Sems® feature is found on both body bolts and tapping screws.
11504056 & 11513801
- Screw Size : M4.2-1.41
- Length : 20MM
- Point Type : A/AB
- Head Style : Hex Washer, Sems
- Washer Diameter : 12MM