Tapco Inc. recently added the Reference (Ref) 70 style bolt to its product line. The Ref 70 is popular internationally for use in heavy-duty applications. Manufactured to accompany Tapco's existing styles, the Ref 70 bolt is employed on pulleys over 20-inches in diameter. The bolt is strongest when coupled with an oval washer, increasing the effective size of the bolt head and its holding power. The Ref 70 bolt is available in zinc plated steel, with 18 sizes ranging from ¼-20 x 1/2” to 3/8-16 x 2-1/2”. Additional styles include: No. 1 Norway Flat Countersunk, No. 3 Eclipse (Slotted), Fanged, Pointed End Fanged and Western 3-Prong. Tapco stocks the largest selection of elevator bolts in North America with an inventory of more than 14 million pieces in 53 sizes.