Flat Head 90° Screw DIN 7991 ASME B18.3
Material | Finish | Grade | Salt spray test |
Stainless Steel Alloy steel Steel Brass Aluminum Nylon Other plastic |
Zinc Clear Black Zinc Green Zinc Zn-Ni Alloy Zn-Fe Alloy Nickel Tinning Black oxide |
4.8 5.8 8.8 10.9 12.9 Customed |
12H-1600H |
A countersunk head with a flat top surface and a cone-shaped bearing surface with a head angle of approximately 82°. Used in applications where protrusion of the fastener above the mating surface is unacceptable. Use a protrusion gage when measuring head height.
DIN 965 cross recessed countersunk flat head screws.DIN 965 phillips flat head machine screw.flat head 90 degree screw.A countersunk head with a flat top surface and a cone-shaped bearing surface with a head angle of approximately 90° DIN965. Used in applications where protrusion of the fastener above the mating surface is unacceptable. Use a protrusion gage when measuring head height.
A countersunk head with a flat top surface and a cone-shaped bearing surface with a head angle of approximately 100°.A screw is a type of fastener, in some ways similar to a bolt, typically made of metal, and characterized by a helical ridge, known as a male thread (external thread). Screws are used to fasten materials by digging in and wedging into a material when turned, while the thread cuts grooves in the fastened material that may help pull fastened materials together and prevent pull-out. There are many screws for a variety of materials; those commonly fastened by screws include wood, sheet metal, and plastic.
A countersunk head with a flat top surface and a cone-shaped bearing surface with a head angle of approximately 110°.A screw is a type of fastener, in some ways similar to a bolt, typically made of metal, and characterized by a helical ridge, known as a male thread (external thread). Screws are used to fasten materials by digging in and wedging into a material when turned, while the thread cuts grooves in the fastened material that may help pull fastened materials together and prevent pull-out. There are many screws for a variety of materials; those commonly fastened by screws include wood, sheet metal, and plastic.
A flat countersunk head with a flat top surface and a cone-shaped bearing surface with a head angle of approximately 120°. Used in applications where protrusion of the fastener above the mating surface is unacceptable. Use a protrusion gage when measuring head height.It is Special Head Screw,Thin Head Screw. There are many screws for a variety of materials; those commonly fastened by screws include wood, sheet metal, and plastic.