Hillman Grade 8 Hex Head Cap Screws, 3/8" x 4", 50-Pack

Heavy-duty hex head cap screws made from heat-treated Grade 8 steel for superior strength and wear resistance. Partially threaded with a washer face under the head for a secure seal, ideal for fastening into nuts or tapped holes. Coarse thread design ensures reliable assembly in demanding applications.

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Key Features:

• Grade 8 Strength: Heat-treated steel delivers high tensile performance for heavy-duty projects
• Washer Face Seal: Built-in washer face under the head helps create a better seal
• Partially Threaded Shank: Provides alignment strength with threaded grip where it counts
• Corrosion-Resistant Finish: Yellow dichromate coating enhances durability and wear resistance
• Multipack Convenience: Boxed 50-pack for jobsite or shop efficiency

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Specifications Table:

Specification	Details
Diameter	3/8 inch
Length	4 inch
Material	Steel
Finish	Heat-treated yellow dichromate
Grade	Grade 8
Head Type	Hex head with washer face
Thread Type	Coarse
Threading	Partially threaded
Number in Package	50
Packaging Type	Boxed
Use	For use with a nut or in a tapped hole; tighten with wrench or drill

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Frequently Asked Questions (FAQ):

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

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Q: What tools are needed for installation?
A: Tighten with a wrench or a compatible drill/driver and hex socket.

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Q: What thread type do these bolts use?
A: Coarse thread.

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Q: Can these be used with nuts or tapped holes?
A: Yes. They are designed for use with a nut or in a properly tapped hole.

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Q: What is the diameter and length?
A: 3/8 inch diameter and 4 inch length.

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Industrial Polish with Uncompromising Strength

These Grade 8 cap screws bring a refined industrial character to custom builds, pairing a clean hex silhouette with a luminous yellow dichromate finish. The partially threaded shank offers a tailored, architectural look while maximizing performance. Style them with exposed hardware on thick timber or steel frames for a confident, modern edge. A must-have detail that elevates craftsmanship and durability in any luxe workspace or loft setting.

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Choose Hillman Grade 8 cap screws for reliable, high-strength fastening—perfect for your next heavy-duty build.