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A563 GRADE "DH" HEAVY HEX NUT
Catalog No. Bolt Size F G H
inch mm inch mm inch mm inch mm
 HHN12 1/2 12.70 7/8 22.23 0.969-1.010 50.27 31/64 12.30
 HHN58 5/8 15.88 1-1/16 26.99 1.175-1.227 61.01 39/64 15.48
 HHN34 3/4 19.05 1-1/4 31.75 1.382-1.443 71.26 47/64 18.65
 HHN78 7/8 22.23 1-7/16 36.51 1.589-1.660 82.52 55/64 21.83
 HHN01 1 25.40 1-5/8 41.28 1.796-1.876 93.27 63/64 25.00
 HHN118 1-1/8 28.58 1-13/16 46.04 2.002-2.093 104.01 1-7/64 28.18
 HHN114 1-1/4 31.75 2 50.80 2.209-2.309 114.76 1-7/32 30.96

 Material:: Steel galvanized per ASTM A153

All bolt and nuts meet requirements of ANSI C135.1