International Flexible Steel Conduit (UL Listed. CSA certified. Heavy Wall Steel. Type HWS.) Uses • Specifications • Home Page FEATURES: Extra heavy steel construction Premium hot dip galvanized zinc coating Superior corrosion resistance Smooth interior for easy wire pull-thru Built in flexibility for simplified positioning Easy installation to follow contours Exceptional crush proof qualities Listed connectors available from leading manufacturers Complies with UL-1 File number E25633, CSA C22.2 File number 14901, NEC Article 350 and Federal Specification WW-C-566C Available cut to custom lengths USES: International Flexible Steel Conduit is for electrical wiring with exceptional crush proof qualities. It is used in the building trade, electric ranges, machine tools, furnaces, air conditioning, printing presses, cranes, conveyors, portable power tools and processing plants of all types. SPECIFICATIONS: Trade Size And Catalog Number Acceptable Internal Diameter Acceptable External Diameter Bending Radius in Inches Approx. Weight of 100 Ft. Approx. Feet Per Standard Coil Min. Max. Min. Max. HWS-5/16 0.312 ––– 0.470 0.510 1-3/4 15.2 250 or 500 HWS-3/8 0.375 0.393 0.560 0.610 2 32 100 or 250 HWS-1/2 0.625 0.645 0.860 0.920 3 44.5 100 HWS-3/4 0.812 0.835 1.045 1.105 4 55.5 100 HWS-1 1.000 1.040 1.300 1.380 5 100 50 HWS-1-1/4 1.250 1.300 1.550 1.630 6-1/4 114 50 HWS-1-1/2 1.500 1.575 1.850 1.950 7-1/2 144 25 HWS-2 2.000 2.080 2.350 2.450 10 178 25 HWS-2-1/2 2.500 ––– 2.860 3.060 12-1/2 240 25 HWS-3 3.000 ––– 3.360 3.560 15 268 25 HWS-3-1/2 3.500 ––– 3.860 4.060 17-1/2 312 25 HWS-4 4.000 ––– 4.360 4.560 20 332 25 Special packaging: 5/16" & 3/8"- Available in 1000 ft., 1500 ft. and 2000 ft. reels 1/2" and 3/4" are available in 500 ft. and 1000 ft. reels. 1" through 4" are available on reels - consult factory.