Hillman 5/16 in. Diameter x 4-1/2 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 50-Pack
SKU: 369181031

Hillman 5/16 in. Diameter x 4-1/2 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 50-Pack

Sale price$45.89 Regular price$50.99
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Description

Hillman 5/16 in. Diameter x 4-1/2 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 50-PackHillman Grade 5 Hex Head Cap Screws, 5 16" x 4 1 2", 50 Pack Durable grade 5 hex head cap screws made from heat treated steel with a zinc finish for strength and wear resistance. Partially threaded with a washer face under the head for a secure seal, ideal for use with nuts or tapped holes. Key Features: Grade 5 Strength: Heat treated steel provides reliable tensile strength for demanding projects Corrosion Resistant Finish: Zinc coating helps resist

Hillman Grade 5 Hex Head Cap Screws, 5/16" x 4-1/2", 50-Pack

Durable grade 5 hex head cap screws made from heat-treated steel with a zinc finish for strength and wear resistance. Partially threaded with a washer face under the head for a secure seal, ideal for use with nuts or tapped holes.


Key Features:

  • Grade 5 Strength: Heat-treated steel provides reliable tensile strength for demanding projects
  • Corrosion-Resistant Finish: Zinc coating helps resist rust and wear in general-purpose applications
  • Washer Face Under Head: Improved sealing and load distribution for secure fastening
  • Partially Threaded Shank: Enhanced shear strength and alignment in structural connections
  • Easy Tool Compatibility: Tightens with a wrench or drill for quick installation

Specifications Table:

Specification Details
Diameter 5/16 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 shank
Number in Package 50
Packaging Type Boxed
Unit of Measurement Listed as Metric (source) – dimensions provided in inches

Frequently Asked Questions (FAQ):

Q: Are these fully threaded?
A: No. They are grade 5 cap screws with partial threading along the shank.


Q: What tools are recommended for installation?
A: Use a wrench or a drill with the appropriate hex socket or driver.


Q: Do they include nuts or washers?
A: No. This pack includes only the hex head cap screws; purchase compatible nuts and washers separately.


Q: What is the corrosion protection?
A: A zinc finish provides general corrosion resistance suitable for many indoor and light outdoor uses.


Q: What thread type do these use?
A: Coarse thread, compatible with matching coarse-thread nuts and tapped holes.


Industrial Poise with Purpose

These hex head cap screws bring a crisp, engineered elegance to utilitarian installations. The zinc finish glints softly, pairing beautifully with raw woods and matte black hardware for a balanced, modern composition. Use them to anchor exposed shelving or brace metal frames where the hardware becomes part of the aesthetic. A small detail with big impact—essential for refined, functional design.


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

Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 369181031

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Ashley
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Reviewed in the United States on February 16, 2026
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LanaB
Whiting, US
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Thankfully, the next book is already available. Roxy Collins is the queen of omegaverse slow burn. This particular series is omegaverse with wolf shifters. Thoroughly enjoyed this book! Lots of suspense and trying to figure out what is true and what's really going on. I loved it! Pretty spicy once the action starts. Heats are pretty much always spicy. There is a little bit of male interaction, but not full-on shmex. Definitely recommend.
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Grantham, US
★★★★★ 5
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