Place of Origin: Zhejiang, China (Mainland) Brand Name: OKL Model Number: machine screw Standard: DIN Material: C1022, C1018, C10B21 Drive type: Slotted Head style: hex washer head Finish: yellow zinc Certificate: ISO9001, RoHS, SGS, CTI Grade: 8.8, 10.9, 12.9 Screw tip: Flat point Thread: Coarse thread, Full thread