Wing Screws Square Wings 1.Materials:Black steel 2.Thread Size: Metric M3-M24 3.MOQ:10000PCS 4.Lead time:15 days Black Wing Screws Square Wings A. DIN316 Wing Screws Specification: 1.Screw StandardDIN316, JIS 1186, IFI 156, ASME B18.17 and as per OEM need.2.SizeMetric or inch, #4-#12, 1/4"-5/8(M4-M24) all is ok for us.3. MaterialsAISI C1010, 10B21, SCM435, 45# steel, S25C, S20C, SUS304, SUS316 or ...