Stagg Universal Mic Thread Adaptor 5/8" to 3/8" at Gear4music
Adapter U9 from 5/8" to 3/8" from Berlebach ® Tripods
Mic Stand Screw 3/8" to 5/8"& Screw Thread Adapters 1/4" to 3/8" for camera tripod|thread adapter|screw thread adapteradapter screw - AliExpress
CAMVATE 5/8''-27 Male To 3/8''-16 Female & 1/4''-20 Female Screw Adapter For Microphone Stand
Auray 5/8" Male to 3/8" & 1/4"-20 Female Combo AD-COMBO-S B&H
JEGS 63248: Brass Adapter Fittings | 3/8 in. NTP x 5/8 in. -18 Inverted Flare Female | Fits 3/8 in. Hard Line | Sold Individually - JEGS High Performance