LDR 311 LN-34 Galvanized Locknut, 3/4-Inch Product Description LDR 311 LN-34 Galvanized Locknut, 3/4-Inch. The malleable pipe galvanized fittings manufactured by LDR are compliant with ASTM A197, ASME B 16.3, B16.14, B16.39, B1.20.1 and A-153 for material, dimensions and threading. All of LDR's galvanized products are lead free, containing no more than the 0.25% maximum lead content allowed by federal law for any item designed to carry water for human consumption. All fittings are FM and UL certified and 100% pressured tested. The zinc coating is applied by hot dipped process. The galvanized finish helps resist rust in water, air and steam applications. Hydrostatic tested and protected from corrosion with varnish. LDR has been the leader in manufacturing high quality kitchen, bath, plumbing and related products to the home improvement industry for over 75 years. From the Manufacturer LDR 311 LN-34 Galvanized Locknut, 3/4-Inch. The malleable pipe galvanized fittings manufactured by LDR are compliant with ASTM A197, ASME B 16.3, B16.14, B16.39, B1.20.1 and A-153 for material, dimensions and threading. All of LDR's galvanized products are lead free, containing no more than the 0.25% maximum lead content allowed by federal law for any item designed to carry water for human consumption. All fittings are FM and UL certified and 100% pressured tested. The zinc coating is applied by hot dipped process. The galvanized finish helps resist rust in water, air and steam applications. Hydrostatic tested and protected from corrosion with varnish. LDR has been the leader in manufacturing high quality kitchen, bath, plumbing and related products to the home improvement industry for over 75 years. Features All fittings are FM and UL certified and 100% pressured tested For use with residential drinking water applications Galvanizing meets ASTM A-159 Rated maximum 150 PSI Zinc coating applied by hot dip process USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.