Hillman Grade 8 Hex Cap Screws, 5/8 in. x 3-1/2 in., 25-Pack

Heavy-duty Grade 8 hex cap screws engineered for high-strength fastening in automotive, machinery, and construction applications. Crafted from heat-treated steel with a washer face under the head and coarse threads for reliable grip and easy assembly.

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Key Features:

• Grade 8 Strength: Heat-treated steel delivers superior tensile strength for demanding projects
• Coarse Thread Grip: Partially threaded shank ensures strong hold in tapped holes or with nuts
• Washer Face Under Head: Improved seal and load distribution to help prevent loosening
• Durable Finish: Yellow dichromate treatment enhances wear and corrosion resistance
• Convenient Bulk Pack: 25 boxed screws for efficient stocking and jobsite readiness

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Specifications Table:

Specification	Details
Diameter	5/8 inch
Length	3-1/2 inch
Material	Heat-treated steel
Grade	8 Grade (USS)
Finish	Yellow dichromate; heat-treated
Head Type	Hex head with washer face
Thread Type	Coarse
Threading	Partially threaded along shank
Number in Package	25 pack
Packaging Type	Boxed
Recommended Tool	Wrench or drill/driver
Use	For use with a nut or in a tapped hole
Package Dimensions (L x W x H)	5.3 in x 4.3 in x 3.2 in
Package Weight	9.2 lbs

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Frequently Asked Questions (FAQ):

Q: Are these fully threaded?
A: No. They are Grade 8 hex cap screws with partial threading along the shank.

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Q: What tools are recommended for installation?
A: Tighten with a wrench or compatible driver; ensure proper torque for Grade 8 fasteners.

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Q: Can these be used outdoors?
A: The yellow dichromate finish offers improved corrosion resistance; however, for long-term exposure, consider matching washers/nuts and appropriate protective practices.

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Q: What thread type do they use?
A: Coarse thread, suitable for general fastening applications.

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

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Industrial Strength with Refined Detail

These Grade 8 hex cap screws bring a crisp, engineered presence to any build—precision and polish in one gesture. The yellow dichromate finish adds a subtle golden accent that feels both rugged and refined. Style them with exposed hardware on custom shelving or machinery-inspired furniture for a sophisticated utility look. A staple of luxurious, performance-minded design.

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Equip your project with Grade 8 reliability—add this 25-pack of Hillman hex cap screws to your cart today.