B1/2-13 x 2 1/4 MS90728, Alloy Steel B1821 Coarse Cap Screw Per ASTM A354BD Zinc Yellow DFAR WB Its slotted indented hex head

Its slotted indented hex head provides a secure grip for driving and prevents slippage

which helps to protect it from rust and corrosion

The 10-32 x 1 1/4 Phillips Oval Machine Screw Fully Threaded 18-8 Stainless Steel is a versatile and durable fastener designed for a wide range of applications

This 1/4-20 x 3/8 slotted pan external sems machine screw is fully threaded and made of zinc

B1/2-13 x 2 1/4 MS90728, Alloy Steel B1821 Coarse Cap Screw Per ASTM A354BD Zinc Yellow DFAR WB Its slotted indented hex head**B1 2 13 x 2 1 4 MS90728** * Alloy Steel B1821 Coarse Cap Screw * Conforms to ASTM A354BD standards * Zinc Yellow DFAR coating for corrosion resistance * Measures 1 2" 13 thread diameter by 2 1 4" length * Hexagonal head for easy installation and removal * Coarse threads provide secure hold in soft materials * Suitable for industrial, automotive, and construction applications