3/8"-16 Channel Nut w/ Short Spring For 13/16" & 1" Channel / THREAD CLASS: 2B THREAD DIRECTION: RIGHT-HAND NUT STYLE: A14 PLAIN, RECTANGULAR NUT LENGTH: 1.316 INCHES MINIMUM AND 1.380 INCHES MAXIMUM NUT HEIGHT: 0.353 INCHES MINIMUM AND 0.370 INCHES MAXIMUM NUT WIDTH: 0.725 INCHES MINIMUM AND 0.770 INCHES MAXIMUM THREAD SERIES: UNC THREAD QUANTITY PER INCH: 16 HARDNESS RATING: 78.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 90.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM NOMINAL THREAD SIZE: 0.375 INCHES SPECIAL FEATURES: 0.09 LBS MATERIAL: STEEL COMP 1015 NUT OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 MATERIAL: STEEL SPRING SURFACE TREATMENT: ZINC OVERALL SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: FE/ZN 3AT PER ASTM F1941 ASSN STD SINGLE TREATMENT RESPONSE OVERALL