20 X 1/4" Stainless Steel Screw 1" 25mm Long for Tripod Head / Clamp 4mm Hex
20 X 1/4" Stainless steel (metal) Tripod screws. 100 X 1/4"-20 Stainless steel (metal) countersunk screws. 1/4" metal male thread with 4mm hex socket. Thread is 21mm in length. Total length including base is 25mm.