Simpson Strong-Tie® Drop-in™ anchor, short threaded, 3/8 in bolt/rod, 3/8-16, carbon steel, 1/2 in drill, 1-9/16 in minimum embedment depth, 1/4 in thread length, UNC, 3/4 in OAL, 410 at 3,000 psi for concrete shear strength, 335 lb at 3,000 psi for concrete tensile, zinc plated. Drop-in™ anchors are internally threaded Drop-in™ expansion anchors for use in flush-mount applications in solid base materials. Available in stainless steel (dia), short (dias) or coil-thread (diac) versions. Minimum thread engagement should be equal to the nominal dia of the threaded insert. Simpson Strong-Tie® DIA37S Short Threaded Drop-In Anchor, 3/8 in, 1/2 in Drill, Carbon Steel, 1-9/16 in D Min Embedment