45 Series Quarter-Turn Drop-In “Hammer Bolt” w/ Flanged Hex Nut, 

These bolt combos are 100% compatible with the following manufacturers:

M8 x 20mm + Hex Nut:

• 80/20 #75-3632
• T-SLOTS #671372
• Bosch Rexroth – P/N 8 981 021 343
• KATIM® #KAT100821/20

M8 x 25mm + Hex Nut:

• 80/20 #75-3635
• T-SLOTS #671374
• Bosch Rexroth – P/N 8 981 021 344
• KATIM® #KAT100825
• McMaster #5537T271