4-40 UNC x 1/2″ Hex Set Screw (Fully Threaded Bolt) A2 Stainless Steel

4-40 UNC hex set screw

4-40 UNC set screw manufactured in A2 stainless steel for high corrosion resistance. This hex set screw has a thread extending up to the underside of the hex head ensuring a secure and tight fixing every time without running out of thread.

Also known as a ‘fully threaded bolt’, the hex head also allows for higher torque to be applied with a range of conventional tools making them a versatile choice.

Engineered for durability and strength, these hexagon head set screws are widely used across many industries and used by DIY enthusiasts and professionals alike.

4-40 UNC set screw specification

• Thread diameter (TD): 4-40 UNC
• Length (L): 1/2″
• Head height (HH): 0.06″ Max
• Head width (HW): 0.18″ Max
• Thread Pitch (TP): 40 (threads per inch)
• Material: A2 stainless steel
• Conformity: ASME B18.2.1

Versatile and widely used, this set screw is part of a comprehensive range of hex head set screws held in stock at competitive price.

Why use Fusion Fixings?

With over 40 years of experience in the construction and fixings industry. Fusion Fixings is a family run business bringing you an extensive and growing range of fixing and fasteners with a variety of sizes, materials, and threads.

Quantities start from just one to as many as you require, with bulk discounts available across many of our products.

Our aim is to hold as much stock in house ready to go with competitive prices across the expanding range.

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