Description: Made of commercially pure titanium of grade 1 (gr1) Has greatest formability among pure titanium, excellent corrosion resistance, light weight and high impact toughness Perfect for any application such as marine, seawater desalination, auto/airframe/aerospace construction and chemical industry Pack of 10 Pieces M4 Flat-Head GR1 Titanium Machine Screws in one poly-bag, easy storage M4 Thread diameter, full length is 10mm / 0.4inch( 3/8'') Specification: Thread Diameter: 7.9 mm, M4, 5/16 Inch Pitch: 0.7 Length: 10 mm / 0.4 Inch Package Includes: 10 Pieces M4*10mm Flat Head GR1 Titanium Machine Screws