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Modular Systems, Inc. is an ISO 9001:2008 certified company

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Hints and Definitions


Hints and Definitions
  • THE MOST COMMON PROBLEM IS IMPROPER POCKET DEPTH.  i.e., joint is too tight or too loose. see italics below. 
  • 6000 Series clips mate only with 6000 series shoulder screws and vice versa.
  • Any non-6000 series clip will mate with any non-6000 series shoulder screw.
  • For all # 12 SMT screws in wood, a 5\32" predrilled hole is recommended.
  • For all # 14 SMT screws in wood, a 3/16" predrilled hole is required.  For 2000 series female shoulder screws, a 5mm. predrilled hole is required.
  • For 5000 series female shoulder screws, a 1\4" predrilled hole is required. For 6000 series female shoulder screws, a 19/64" predrilled hole is required.
  • For # 10 SMT mounting screws ( and with our drill fixtures ), a 9/64 predrilled hole is required.
  • An Apex X492 ( or equivalent ) bit is recommended for driving male shoulder screws.
  • When driving clip mounting screws into predrilled holes in pocket, firmly clamp panel over pocket to prevent cracking from mounting hole to mounting hole (especially with 32mm clips)!! 
  • When routing pockets, don't let sawdust build up on back plate.  An air jet can eliminate all dust buildup.  Also use our pocket depth gage regularly.
  • Modular Systems has 1\2" shank router bits available to meet pocket dimensions required by any Mod-eez® clip.
  • Use 511, 512 or 513 to mount 5055A or 5055B compression dowel.
  • When pre-drilling  thin gauge metal for our thread cutting shoulder screws, use a # 21 bit for the 5043 and a # 3 bit for the 6043


  • BLIP - the narrow point on a semi-locking clip's ramp.

  • CLIP - The spring steel "female" portion of the Mod-eez® fastener system

  • CLIP JOINT - Modular Systems, Inc.

  • PASS-THRU CLIP - A clip with both ends of the ramp open, enabling a shoulder screw to enter, tighten, and then "pop" through the clip.

  • R.T.A. - Ready to assemble. Furniture which is not yet assembled, but is ready to be.

  • LOCKING CLIP - A clip with a locking tab which flexes over the top of the shoulder screw head when assembled and snaps down behind the head when assembly is complete.

  • NON-LOCKING CLIP - A clip with no locking or semi locking features.  It uses only friction to hold the joint together.

  • SEMI-LOCKING CLIP - A clip with a blip in the raceway.  Once assembled, disassembly requires passing the shoulder screw the through the blip, flexing the ramp sides outward as the shoulder screw passes, requiring more force than a non locking clip, thus, semi locking. 

  • POCKET - The machined ( routed ) recess in which the clip is mounted and which ultimately hides the joint.

  • SEX BOLTS - "Female" shoulder screws ( i.e. threaded internally to accept the threaded portion of a "male" shoulder screw ).

  • SHOULDER SCREWS - The "male" portion of the Mod-eez® fastener system.

  • SURFACE MOUNT - Mounting the shoulder screw in the pocket and the clip on the adjoining surface.

  • WINDOW - An opening in the side of a pocket to provide an entry point for a shoulder screw or a screw driver.


For flush fit of panel "A" to panel "B" with shoulder screw fully engaged in clip, locate shoulder screw from edge of "B" a distance equal to location of rear clip mounting screw from edge of "A" less dimension X ( X varies with the clip type, see specifications for your clip ).

For instance, with the 32mm system boring, drill shoulder screw holes .428" ( 11mm) closer to the edge than the rear clip mounting hole.

Mod-eez RTA "Ready To Assemble" product line includes all of the following, Furniture Connectors, Furniture Fittings, Furniture Fasteners, RTA Furniture Fasteners. RTA Furniture Connectors, KD Fasteners, KD Connectors, KD Fittings, Cabinet Fasteners, RTA Hardware, RTA Furniture Hardware, RTA Connectors, Cabinet Construction Fasteners. Cabinet Construction Fittings, Wardrobe Fasteners, Closet Hardware, Woodworking Connectors, Woodworking Fasteners and Woodworking Fittings.