M16x80mm Grade 10.9 Black Passivated Steel Countersunk Socket Head Screw Set with Spring Washer and Lock Nut

Product Overview

This M16 x 80 mm fastener set includes a countersunk socket hex flat head screw, spring washer, and self-locking nut. Manufactured from grade 10.9 steel with a black passivated finish, it is designed for high-strength mechanical assembly, equipment maintenance, structural fastening, and industrial repair applications.

Key Features

• Grade 10.9 steel provides high tensile strength and reliable clamping performance
• Black passivated surface improves corrosion resistance and gives a uniform matte-black finish
• Countersunk flat head creates a flush finish in tapered or countersunk holes
• Hex socket drive supports secure installation with standard Allen tools
• Spring washer helps resist loosening under vibration
• Self-locking nut provides additional thread retention in dynamic applications

Specifications

Applications

Suitable for machinery assembly, automotive fixtures, industrial equipment, steel structures, conveyor systems, maintenance repairs, jigs, and general high-strength bolted connections where a flush fastener head is required.

Package Contents

• 1 x M16 x 80 mm Countersunk Socket Hex Flat Screw
• 1 x Spring Washer
• 1 x Self-Locking Hex Nut