Hillman 3/8-16 x 3-1/2 in. Hex Head Cap Screws (25-Pack)

Heavy-duty hex head cap screws designed for high-torque fastening in wood, metal, and machinery. Coarse 3/8-16 threads and a washer-faced hex head deliver secure clamping, while durable steel construction ensures reliable performance on the jobsite or in the shop.

Key Features:

• Durable Steel Construction: Built to handle demanding fastening applications and repeated tightening
• High-Torque Hex Head: Hex cap head with washer face provides strong grip and a better seal
• Coarse Thread Profile: 3/8-16 machine threads for secure hold and easy assembly
• Partially Threaded Shank: USS pattern offers alignment strength plus clamping force
• Value Pack: 25 screws per box for project and inventory needs

Specifications Table:

Frequently Asked Questions (FAQ):

Q: What tools are needed to install these?
A: Tighten with a wrench or a drill/driver fitted with the correct hex socket.

Q: Are these fully threaded?
A: No. They are partially threaded along the shank (USS pattern).

Q: What is the thread type?
A: Coarse 3/8-16 machine threads.

Q: Can these be used outdoors?
A: They are steel; corrosion resistance depends on environment. If exposure is high-moisture or corrosive, consider stainless or coated fasteners.

Q: How many pieces are in the package?
A: 25 pieces per retail package.

Industrial Poise with Purpose

A hex cap screw brings an honest, architectural clarity to a space—clean lines, solid presence, and effortless utility. The washer-faced head is a quiet detail that feels refined, anchoring hardware with confidence. Style it visibly on raw timber brackets or blackened steel accents for a deliberate, crafted look. It’s the kind of hardworking hardware that elevates everyday function into modern luxury.

Outfit your next build with reliable clamping power—add this 25-pack of Hillman hex head cap screws to your cart today.