Extrusion Connecting System Categories Extrusions Bestseller Base 50 extrusions Base 45 extrusions Base 40 extrusions Base 30 extrusions Base 20 extrusions Special extrusions Special extrusions Angle extrusions Hinge extrusions, handle extrusions, square pipe Connecting technology Universal Connector Standard Connector Combination Connector Extension Connector Mitre Connector Special Connector Threaded Connector Accessories Plastic profile Fixing Kit Mounting brackets Attachment rail Uniblock Clamping block Attachment bracket T-bolts Threaded Elements Threaded plates Double threaded plates Halfround threaded plates Extrusion nuts Light extrustion nuts Double extrusion nuts Hammer nuts Rhombold nuts Anti-twist spigots Threaded inserts Base Connecting Elements Roller Elements Plastic Elements Cable Ducts Panels Hinges and Joints Fitting Pneumatic Elements Dynamic Elements Corner piece Lifting Columns Roller system HAMMER NUT BASE 50/45/40 M3 AC31-35 HAMMER NUT BASE 50/45/40 M4 AC31-45 HAMMER NUT BASE 50/45/40 M5 AC31-55 HAMMER NUT BASE 50/45/40 M6 AC31-65 HAMMER NUT M3 BD31-35 HAMMER NUT M4 BD31-45 HAMMER NUT M5 BD31-55 HAMMER NUT M6 BD31-65