Amazon.com : Camera Screw Adapter Thread 1/4" Male to 3/8" Female and 3/8" Male to 1/4" Female Adapter Set for Camera Monitor, Tripod, Mount : Electronics
Wooden Camera Screw Set for PL Mount (RED DSMC1, DSMC2) 900216
Manfrotto Set of Two 1/4" Camera Mounting Screws R116,138 B&H
camera screw 1/4-20 for Railway plate system - cam-jam.de camera-accessories
Digiom Hot Shoe Screw Adapter Tripod Mount Phone Clip Holder for DSLR Camera (Pack of 2) l Camara parts l Digital camera lens l photography camera accessories - JioMart
Quick Release Camera Fixing Screw 1/4 Inch - China Zinc Alloy Screw, Pack 1/4'-20 to 1/4'-20 Screw | Made-in-China.com
8Sinn 3/8"x16 Slotted Screw - Camera Fixing Screw
SmallRig Camera Fixing Screw (Shipping Area: North America) 973B $1.80