Hi Delta, Thank you for your question about the Delta Faucet R3510-WL. The self-tapping handle screw is size SHCS-#8-32X.43-DOG POINT Please reach out with any additional questions! Best Regards, Bryan Digital Communications Specialist (800) 345-3358
Hi Kal! Thank you for contacting us at Delta Faucet! I will be happy to help. No, this is the rough-in valve for single handle wall mount lavatory faucets. You will be able to able to get temperatures from hot to cold to a mix. Please contact us directly if further assistance is needed at this time. Best Regards, Tim
Dear Chuckmar, Thank you for your inquiry! The Delta Wall Mount Rough-In Valve R3510-WL is designed for a single handle lavatory faucet. This unit is not designed with a temperature adjustment, there is no way to get more hotter or colder water flow. Best regards, Tanya