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Hillman

Hillman 3/8 in. Diameter x 4-1/2 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 50-Pack

Hillman 3/8 in. Diameter x 4-1/2 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 50-Pack

Regular price $61.99 USD
Regular price Sale price $61.99 USD
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Hillman Grade 5 Hex Head Cap Screws, 3/8" x 4-1/2", 50-Pack

Durable grade 5 hex head cap screws made from steel with a heat-treated zinc finish for added strength and corrosion resistance. Partially threaded with a washer face under the head for a secure seal, ideal for general construction and machinery fastening. Designed for use with a nut or tapped hole and tightened with a wrench or drill.


Key Features:

  • Grade 5 Strength: Heat-treated steel provides reliable tensile strength for demanding applications
  • Corrosion-Resistant Finish: Zinc coating helps protect against rust and wear
  • Secure Seating: Washer face under the head delivers a better seal and load distribution
  • Partially Threaded Shank: Enhances alignment and clamping force in assemblies
  • Versatile Fastening: Use with nuts or tapped holes; compatible with wrench or drill tightening

Specifications Table:

Specification Details
Diameter 3/8 inch
Length 4-1/2 inch
Material Steel
Finish Heat Treated Zinc
Grade Grade 5
Head Type Hex head with washer face
Thread Type Coarse
Threading Partially threaded along shank
Number in Package 50 pack
Packaging Type Boxed
Use For use with a nut or tapped hole; tighten with wrench or drill

Frequently Asked Questions (FAQ):

Q: Are these fully threaded?
A: No. They are partially threaded along the shank for improved clamping and alignment.


Q: What thread type do these screws use?
A: They use coarse threads suitable for general-purpose fastening.


Q: Can I use these outdoors?
A: Yes. The zinc finish offers corrosion resistance; for highly corrosive environments consider stainless or hot-dipped galvanized options.


Q: Do they include nuts or washers?
A: No. This pack contains only hex head cap screws; nuts and washers are sold separately.


Q: What tool is recommended for installation?
A: Tighten with a wrench or compatible driver bit on a drill.


Sleek, Industrial Fasteners with Enduring Strength

These hex head cap screws bring a refined, utilitarian clarity to hardware details, marrying clean geometry with a polished zinc sheen. The partially threaded shank and washer-faced head deliver a tailored fit that feels intentionally engineered. Style them with matte black brackets or brushed steel accents to echo their quiet sophistication. A dependable essential that elevates the craft and longevity of any build.


Secure your project with trusted strength—add this 50-pack of Hillman grade 5 hex cap screws to your cart today.

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