What is the contact phone number for Helicoil/Emhart? Support January 13, 2021 18:02 Updated Follow The contact for Emhart/Helicoil is listed below. Emhart Technologies50 Technology CenterShelton CT 06484 1-877-364-2781 Related articles What is the phone number for the BLACK + DECKER Service Center in Singapore? Can I buy Black and Decker parts online? Who can I contact for support with BLACK+DECKER compact appliance? Comments 0 comments Please sign in to leave a comment.