[Features] ●Suitable for aluminum, aluminum alloys, magnesium alloys, etc. ● Compliant with ISO3161 standards except for no roundness at the bottom, making it ideal for the aviation industry.
[Use] ● For drilling blind holes. ●Work material: aluminum alloy, pure copper, thermoplastic.
[Specifications] ● Accuracy: 3B ● Nominal dimension: 5/16 ● Number of threads: 24 ● Screw length (mm): 12.5 ● Overall length (mm): 90 ● Shank diameter (mm): 8 ● Shank square part (mm) : 6.2 ● Pilot hole diameter (mm): 7 ● Pitch (mm): 1.058 ● Number of chamfered threads: 2.5 ● Machined screw: Unified screw
