Fractional Tube X Socket Weld T Excel Metal part no. Equivalent Part no. Type 1 Equivalent part no Type 2 TUBE ODQT (INCHES) BODY HEX F ØT1 C Ø E L NUT HEX W D L1 2-TSWUD -200 - 6 - 2W 2 -2 ZHLW 1/8 7/16 0.31 0.6 0.09 1.14 7/16 0.5 0.25 3-TSWUD -300 - 6 - 3W 3 -3 ZHLW 3/16 7/16 0.42 0.63 0.12 1.17 1/2 0.54 0.25 4-TSWUD -400 - 6 - 4W 4 -4 ZHLW 1/4 1/2 0.44 0.7 0.19 1.32 9/16 0.6 0.31 6-TSWUD -600 - 6 - 6W 6 -6 ZHLW 3/8 5/8 0.62 0.76 0.28 1.48 11/16 0.66 0.38 8-TSWUD -810 - 6 - 8W 8 -8 ZHLW 1/2 13/16 0.75 0.86 0.41 1.62 7/8 0.9 0.5 10-TSWUD -1010 - 6 - 10W 10 -10 ZHLW 5/8 15/16 0.92 0.86 0.5 1.65 1 0.96 0.5 12-TSWUD -1210 - 6 - 12W 12 -12 ZHLW 3/4 1-1/16 1.05 0.86 0.62 1.71 1-1/8 0.96 0.56 16-TSWUD -1610 - 6 - 16W 16 -16 ZHLW 1 1-3/8 1.31 1.04 0.88 2.07 1-1/2 1.23 0.75 Excel Metal tube fittings with weld ends allow you to make tube-to-weld connections. The fittings provide leak-proof seals at the tubing connections. They also eliminate costly, hazardous leaks in instrumentation and process tubing. They permit disassembly in otherwise permanently welded tubing systems.materials include 316/316l stainless steel, steel, brass and aluminium. Note : The E dimension is the minimum opening & fittings of this group may be back drilling to lager id at pipe thread or straight thread end. Dimension l, c, d is shown in the finger-tight position. Dimensions are for reference only and are subject to change.