Kits like these can be handy to have, there’s a million different iterations on amazon and eBay so take your pick, they’re not very high quality though so sometimes you can’t get the 3/8 to 1/4 adapters off the thread without destroying them

muscccm Camera Screw, 22 Pcs Tripod Screw Adapter Converter Screws Pack https://smile.amazon.com/dp/B07KZF9JNC/ref=cm_sw_r_cp_api_glt_fabc_48H1RAYC343BRDWBFJZ4?_encoding=UTF8&psc=1

This is a handy part too, it still uses the smaller 1:4 screw but you can also connect any other “stud” to it to get a fixed 3/8 screw if needed

Manfrotto 143BKT Replacement Camera Bracket for Magic Arm (Black) https://smile.amazon.com/dp/B00134SCCA/ref=cm_sw_r_cp_api_glt_fabc_PEQZ7WKQTMRS7FZ0XFKF?_encoding=UTF8&psc=1

This is the better way to connect 3/8 things to the top of a light pole instead of relying on that tiny piece of threaded aluminum, goes on any light stand and you get the 3/8 you’re looking for and it won’t bend or break off

Kupo 5/8in (16mm) Receiver with 3/8in-16 Thread (KG004611) https://smile.amazon.com/dp/B0082N9EPE/ref=cm_sw_r_cp_api_glt_fabc_NCZAJYK65VGS13PGT789

You probably do t need this yet but this will mount on a light stand or cstand and gives you a very solid platform for a ball head to screw on without wobbling

Kupo Baby Ball Head Adapter (KG014212) https://smile.amazon.com/dp/B01DSR65XC/ref=cm_sw_r_cp_api_glt_fabc_XSK4DPCRV2KZYT05TG01