Our superior 20B SA1 attachment connecting link is designed explicitly for metric 31.75mm pitch 20B chain and conforms to ISO and DIN dimensional standards for direct interchangeability. Each precision component of this 20B SA1 attachment is made from top-quality carbon steel that has been heat-treated for extended working life and durability. We supply this attachment as a standard connecting link (master link) or assembled onto the 20B roller chain in specific increments. Design-wise, the 20B SA1 attachment has a straight tab on one side with one hole for mounting. For additional information or to get a quote on our 20B SA1 attachments, contact our customer service team, and we will gladly assist you.

20B SA1 Attachment Dimensions

• Part #: 20B SA1
• Configuration: Straight One Hole on One Side
• Pitch (P): 31.75mm
• Inner Width (B1): 19.56mm
• Roller Link Width (B2): 29.00mm
• Roller Diameter (D1): 19.05mm
• Plate Height (G): 26.4mm
• Attachment Width (M): 35.0mm
• Attachment Hole I.D. (DL): 9.00mm
• Dimension (F): 30.5mm
• Dimension (H): 45.7mm
• Plate Thickness (S): 3.50mm