Hillman 5/16 in. Diameter x 1 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 100-Pack

Regular price $30.99

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Hillman Grade 5 Hex Head Cap Screws, 5/16" x 1", 100-Pack

Durable grade 5 hex head cap screws made from heat-treated zinc-coated steel for strong, wear-resistant fastening. Sized 5/16 in. diameter by 1 in. length, partially threaded for versatile use in tapped holes or with a nut. Ideal for general construction, automotive, and machinery projects.


Key Features:

  • Heat-Treated Strength: Grade 5 steel construction enhances tensile strength and durability
  • Corrosion-Resistant Finish: Zinc coating helps resist rust and wear in demanding environments
  • Washer Face Design: Built-in washer face under the head improves sealing and load distribution
  • Versatile Fastening: Partially threaded shank for use with nuts or tapped holes; tightens with wrench or drill
  • Bulk Value Pack: 100 screws per box to tackle multiple jobs and restock the shop

Specifications Table:

Specification Details
Brand Name Hillman
Material Steel
Finish Heat Treated Zinc
Grade SAE Grade 5
Diameter 5/16 inch
Length 1 inch
Head Type Hex head with washer face
Thread Type Fine
Unit of Measurement SAE
Number in Package 100 pack
Packaging Type Boxed
Package Dimensions 4.5 in W x 3.5 in L x 2 in H
Package Weight 3.1 lbs

Frequently Asked Questions (FAQ):

Q: Are these fully or partially threaded?
A: They are grade 5 screws with a partially threaded shank.


Q: What tools do I need to install them?
A: Tighten using a wrench or a drill with the appropriate hex socket.


Q: Will the zinc finish prevent rust?
A: The zinc coating provides good corrosion resistance for many environments, though harsh exposure may still require additional protection.


Q: What thread type do these screws use?
A: Fine-thread SAE specification.


Q: Can these be used as standard hex bolts?
A: Yes, they function as hex bolts for applications requiring a hex head fastener.


Sleek Utility with Industrial Confidence

These zinc-steel cap screws bring refined industrial polish to any build, marrying resilience with clean geometry. The hex head’s washer face adds a subtle, purposeful detail while amplifying performance. Style them with matte black brackets or brushed hardware to create a cohesive, modern fastening story. A must-have for achieving elevated, durable design from workshop to living space.


Secure your projects with reliable, corrosion-resistant strength—add this 100-pack of Hillman grade 5 cap screws to your cart today.

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