We supply Direct Tension indicating (DTI) Washers conforming to ASTM F959/F959M-17 Standard. Surface Finish Shall be Zinc Phosphate Coated and oiled Mechanical Zinc Coated. The New View Lite Nut-Side self indicator DTI and Self-indicating washer helps to speed up installation and inspection, reduce project cost and again peace of mind that comes from knowing that your bolted connection are properly and reliably tensioned.