Amazon.co.jp: Iron (SCM435)/Unichrome Hex Bolts, Strength Classification: 10.9 [Made of Japanese Studded Screw] (Half Screw) M6 x 25 (Pack of 10) : Industrial & Scientific
Amazon.com: (10 pcs) M20-2.5 X 130mm, DIN 931 / ISO 4014, Metric, Hex Head Cap Screws Bolts, Part Thread, Class 10.9 Steel, Plain : Industrial & Scientific
Amazon.com: M20-2.5 x 40mm Hex Head Cap Screws, Steel Metric Class 10.9, Plain Finish (Quantity: 115 pcs) - Coarse Thread Metric, Fully Threaded, Length: 40mm Metric, Thread Size: M20 Metric : Industrial & Scientific
Amazon.com: M20-2.50x60 MM,(FT) Metric Class 10.9 HEX Head Screw, DIN 933/961, Plain (Quantity: 20) Size: M20-2.50 | Length: 60mm | | Fully Threaded : Industrial & Scientific