Hillman 3/8 in. Diameter x 2-1/4 in. Length Grade 5 Heat-Treated Zinc Steel Hex Head Cap Screws, Coarse Thread, 50-Pack

Regular price $30.99

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Hillman Grade 5 Hex Cap Screws 3/8 in. x 2-1/4 in. (50-Pack)

Durable Grade 5 hex head cap screws for strong, reliable fastening in steel and wood applications. Made from heat-treated zinc-plated steel with coarse threads and a washer face under the head for a secure seal.


Key Features:

  • Grade 5 Strength: Heat-treated steel for higher tensile strength and wear resistance
  • Corrosion Protection: Zinc finish helps resist rust in indoor and covered outdoor uses
  • Coarse Thread: Provides strong hold and quicker assembly in general-purpose fastening
  • Washer Face Head: Built-in bearing surface under hex head for better sealing and load distribution
  • Convenient Value Pack: 50-piece box sized 3/8 in. diameter x 2-1/4 in. length

Specifications Table:

Specification Details
Diameter 3/8 inch
Length 2-1/4 inch
Material Steel
Finish Heat Treated Zinc
Grade Grade 5
Thread Type Coarse
Head Style Hex Head, washer face under head
Number in Package 50 pack
Packaging Type Boxed
Partially Threaded Yes
Category Hex Bolts / Hex Cap Screws

Frequently Asked Questions (FAQ):

Q: What tools are needed to install these screws?
A: Tighten with a wrench or a drill and appropriate hex socket.


Q: Are these fully threaded?
A: No, these are partially threaded along the shank (coarse thread).


Q: What grade are these bolts?
A: They are Grade 5 hex cap screws.


Q: Can these be used outdoors?
A: The zinc finish offers basic corrosion resistance; for prolonged exposure or harsh environments, consider galvanized or stainless options.


Q: What is included in the package?
A: A boxed 50-pack of 3/8 in. diameter x 2-1/4 in. length hex head cap screws.


Quiet Strength in a Sleek Zinc Finish

These hex cap screws bring a tailored precision to any build, their zinc sheen lending a crisp, utilitarian polish. The Grade 5 profile is the subtle star—clean edges, a washer-faced head, and confident proportions that feel engineered and elegant. Style them with matte black brackets or raw oak beams for an industrial-modern note that reads intentional. A small detail with a luxe impact, they’re the finishing touch that keeps structure and style in perfect conversation.


Choose these Grade 5 Hillman hex cap screws for dependable, clean-looking fastening that lasts.

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