I have this decent Levi's belt that I lost a set screw too. The cheapest I could find for the screw was $8 online, but I found two in this $1 Goodwill
The Skinny Grizzly Belt | Made in USA | Full Grain Leather | Men's Dress Belt 44 / Dark Bourbon
1.5 Wide Dual-Layer Bullhide Gun Belt
Tony Lama Mens Black Duke Center Applique Leather Belt - 7233L
Introducing the Vintage Levi Strauss & Co The Two Horse Brand Belt Buckle, a timeless accessory that embodies the rich heritage and rugged style of
Vintage Levi Strauss & Co The Two Horse Horse Brand Belt Buckle
Gingerich Nashville Edge Stitched Black Men's Leather Belt – Byrd's Western Store
Stoked to co-lab on this belt & buckle with Coleman's Haberdashery. Hand-made with love, one of a kind charcoal gray belt made with Colorado Buffalo hide. 8-10 oz weight and includes buckle and hardware. Buckle can be taken off with removal of 2 screws on back side of belt. Made in Steamboat Springs, Colorado, USA.
NINESEVENZERO 970 Co-Lab Belt & Buckle 38
How to Make Your Own Leather Belt
Levi's Big-Tall Casual Leather Men's Belt - Black