

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 63539 is a hex socket cap screw designed for fastening applications that require corrosion resistance and reliable clamping force. Machined from 316 stainless steel, this fastener features a 3/8-16 UNC thread and a 1-1/2 inch length under head. Drive engagement is achieved with a 5/16 inch hex key. The 316 alloy grade provides superior resistance to chlorides and harsh environments compared to standard 304 stainless, making it a dependable choice where moisture or chemical exposure is a concern. Installers across HVAC, plumbing, and general mechanical trades use this size for structural and equipment attachment work.
This screw is suited for residential and light commercial applications where a socket-drive fastener is required in corrosion-prone environments. Common install scenarios include equipment panels, pipe supports, junction enclosures, and bracket assemblies. The 3/8-16 UNC coarse thread engages quickly and provides strong pullout resistance in standard tapped holes and threaded inserts. Minimum order quantity is 10 units per order, with individual package quantity of 1.
Designed as a standard 3/8-16 UNC hex socket cap screw for use in any application requiring a 1-1/2 inch length under head fastener with a 5/16 inch hex drive in 316 stainless steel.
Install using a 5/16 inch hex key or socket bit driver. Verify that the mating threaded hole or nut matches the 3/8-16 UNC thread specification before installation. Inspect threads on both the fastener and the receiving hole for damage or contamination prior to assembly. Power down or de-energize any electrical equipment before accessing fastener locations on live panels or enclosures.
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!