

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The VALUE COLLECTION R52001254 is a fully threaded hex head cap screw sized 5/8-11 x 2.5 inches, manufactured from Grade 2 steel with a zinc-plated finish. The hex head design accepts standard wrenches and sockets for straightforward installation and removal. Zinc plating provides a basic corrosion barrier suitable for general indoor and sheltered outdoor applications. This fastener conforms to ASME B18.2.1 dimensional standards and meets ASTM A307 and SAE J429 material and mechanical requirements, making it appropriate for general-purpose structural and mechanical assemblies where high-strength fasteners are not required.
This screw is used in a wide range of trade applications including HVAC equipment mounting, light structural framing, mechanical equipment bases, plumbing fixture supports, and general fabrication. The 5/8-11 UNC thread pitch and 2.5-inch length under head suits mid-gauge steel and iron assemblies where a through-bolt or tapped-hole configuration is specified. Electricians, plumbers, HVAC installers, and general contractors encounter this fastener class regularly during equipment installation and service work.
Designed as a general-purpose UNC hex head cap screw compatible with any standard 5/8-11 tapped hole or matching nut conforming to ASME B18.2.2 or equivalent specifications.
Install using a standard hex wrench, box-end wrench, or socket rated for the fastener size. Verify that the mating thread, whether a nut or tapped hole, is also 5/8-11 UNC before installation. Do not use zinc-plated fasteners in continuously wet, submerged, or chemically aggressive environments without evaluating corrosion suitability. Follow applicable mechanical codes and equipment manufacturer torque guidelines when specified.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
Add install kit to cart
—
Thanks for subscribing!
This email has been registered!