Made of high-strength aeronautical aluminum. - colored anodized
60% lighter than stainless steel. TYPE: THREADED SCREWS THREAD: M4 X 0.5 DIAMETER: 4MM LENGTH: 12MM HEAD: CUFFED HEAD DRIVE: ALLEN SURFACE: ANODIZED MATERIAL: ALU QUALITY CATEGORY: NO QUALITY CATEGORY SEAL/WASHER: WITHOUT SPECIALTY: HEAD DIAMETER 8 MM