Stainless steel right angle beam clamps are designed to help secure strut to a beam, flange or other structural member. Gibson Stainless offers the right angle beam clamps for both 1-5/8" x 1-5/8" and 1-5/8" x 3-1/4" strut.Material: 316 SSStandards: ASTM A240, ASTM A193 B8M Class 1, ASTM F593Saddle of right angle beam clamp is 100% made in USA; hex nuts, raw material for square u-bolt may or may not be of U.S. origin.