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Hillman 3/8 in. Diameter x 6 in. Length Heat-Treated Zinc Steel Hex Head Cap Screws, Coarse Thread, 50-Pack

Hillman 3/8 in. Diameter x 6 in. Length Heat-Treated Zinc Steel Hex Head Cap Screws, Coarse Thread, 50-Pack

Regular price $87.99 USD
Regular price Sale price $87.99 USD
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Hillman Grade 5 Hex Head Cap Screws, 3/8" x 6", 50-Pack

These Hillman Grade 5 hex head cap screws deliver reliable fastening strength for heavy-duty projects. Made of steel with a heat-treated zinc finish, they feature coarse threads and a washer face under the head for a secure seal.


Key Features:

  • Heavy-Duty Strength: Grade 5 steel construction for dependable load-bearing performance
  • Corrosion-Resistant Finish: Heat-treated zinc coating helps resist wear and rust
  • Secure Seating: Washer face under the head enhances seal and grip
  • Easy Fastening: Hex head design installs with a wrench or drill
  • Convenient Bulk Pack: 50 screws sized 3/8 in. diameter x 6 in. length

Specifications Table:

Specification Details
Diameter 3/8 inch
Length 6 inch
Material Steel
Finish Heat Treated Zinc
Grade Grade 5 (USS)
Thread Type Coarse
Head Type Hex head with washer face
Number in Package 50 pack
Packaging Type Boxed
Installation Tighten with a wrench or drill

Frequently Asked Questions (FAQ):

Q: Are these fully threaded?
A: They are partially threaded with coarse threads along the shank, per Grade 5 USS spec.


Q: What tools are needed for installation?
A: Use a wrench or a compatible hex socket/driver; a drill with socket adapter can speed installation.


Q: Can these be used outdoors?
A: The heat-treated zinc finish offers corrosion resistance suitable for many indoor and covered outdoor applications; for prolonged exposure, consider galvanized or stainless options.


Q: Do they include nuts or washers?
A: No, this pack includes only hex cap screws; nuts and washers are sold separately.


Q: What is the quantity in the box?
A: 50 screws per box.


Industrial Precision with a Polished Edge

These Grade 5 hex cap screws bring a clean, engineered elegance to structural details. The heat-treated zinc finish offers a subtle sheen that pairs beautifully with raw woods and powder-coated steel. Use them to elevate exposed fastener moments on custom shelving or workshop furniture. A must-have hardware staple for projects where strength meets refined utility.


Choose Hillman Grade 5 hex cap screws for a durable, polished fastening solution—add this 50-pack to your project today.

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