Hard-to-Find Fastener Grade 8 Hex Cap Coarse Large Bolts, Bulk Pack, Steel Hex Bolts for Construction, Home Improvement, 5/16-18 x 3-1/2, Pack of 25

Name: Hard-to-Find Fastener Grade 8 Hex Cap Coarse Large Bolts, Bulk Pack, Steel Hex Bolts for Construction, Home Improvement, 5/16-18 x 3-1/2, Pack of 25
Brand: Hard-to-Find Fastener
SKU: awhd-us-b004s6lca4
Price: 15.46 USD
Availability: InStock

Brand: Hard-to-Find Fastener

Condition: Used

$15⁴⁶

$19⁵⁷

-21% Save $4¹¹

Updated: 2 days ago

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Description

Premium Strength: Manufactured from Grade 8 hardened steel for superior durability and high-torque applications

Course Threaded: Designed with a course thread for a more secure attachment between pieces. Compatible with standard nuts and washers.

Hex Cap Construction: These large bolts feature a hex cap that allows for greater torque application than circular caps

Large Hex Bolts: The greater diameter of these steel hex bolts allows for stronger, more heavy-duty load bearing across the join

Versatile Use: Ideal for automotive, industrial, and heavy machinery projects requiring maximum fastening security. The corrosion-resistant zinc finish protects against corrosion for long-lasting performance indoors and outdoors.

Diameter: 5/16"

Length: 3-1/2 Inch

Material: Steel

Finish: Yellow Zinc

Head Style: Hex (1/2 Wrench)

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Product Details

SKU:: awhd-us-b004s6lca4
Model:: 014973251727
Country:: US
ASIN:: B004S6LCA4
GTIN:: 00738287006858
UPC:: 014973251727

Shopping Smarter

Common questions about buying open-box and refurbished.

Why buy refurbished or open-box?

Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $4 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.

What's the difference between open-box and refurbished?

Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.

Why use OpenBoxFox?

Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for Hard-to-Find Fastener products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.

Is it safe to buy refurbished?

Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.