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

These Hillman Grade 5 hex head cap screws provide reliable fastening strength for automotive, machinery, and construction projects. Made of heat-treated steel with a zinc finish, they feature a washer face under the head and coarse threads for secure assembly.

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Key Features:

• Grade 5 Strength: Heat-treated steel provides higher tensile strength for demanding applications
• Corrosion-Resistant Finish: Zinc plating helps protect against rust and wear
• Washer Face Head: Integrated bearing surface under the hex head improves load distribution and sealing
• Coarse Thread Design: Ideal for quick assembly and strong hold in tapped holes or with nuts
• Bulk Contractor Pack: 50-pack for efficient stocking and project savings

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Specifications Table:

Specification	Details
Brand	Hillman
Diameter	5/16 inch
Length	5-1/2 inch
Material	Steel
Finish	Heat-treated zinc
Grade	5 (USS)
Head Style	Hex head with washer face
Thread Type	Coarse
Threading	Partially threaded along shank
Units	Imperial
Number in Package	50 pack
Packaging Type	Boxed
Package Dimensions (L x W x H)	6.8 in x 4.5 in x 3.3 in
Package Weight	6.8 lb

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Frequently Asked Questions (FAQ):

Q: Are these fully or partially threaded?
A: They are partially threaded along the shank (Grade 5 USS style).

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Q: What tools are needed for installation?
A: Tighten using a wrench or driver/socket sized for a 5/16 in. hex cap screw with the appropriate nut and washer.

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Q: Can these be used outdoors?
A: The zinc finish offers basic corrosion resistance suitable for many indoor and some sheltered outdoor uses; for harsh environments, consider galvanized or stainless options.

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Q: What thread type do these screws have?
A: They use coarse threads (USS).

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Q: What is included in the package?
A: A boxed 50-pack of 5/16 in. diameter x 5-1/2 in. length hex head cap screws.

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Industrial polish with steadfast purpose

Clean-lined and quietly authoritative, these hex cap screws bring a refined industrial cadence to custom builds. The zinc finish offers a subtle gleam, while the crisp washer-faced head delivers a tailored, architectural detail. Pair them with matte black hardware for a chic, mechanical contrast or let them punctuate raw woods for modern utility. A small but essential flourish, they anchor craftsmanship with effortless sophistication.

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Stock up on Hillman Grade 5 hex cap screws today for strong, reliable fastening that keeps projects moving.