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SLEC-B-EL | TKK Corporation


SLEC-B-EL


Clamping Screws with Eccentric Head with Guide

Dimension Drawing

Dimensions/Specifications/CAD

Part Number M D1 L1 L2 d L3 e Key Part No. Hexalobular Socket No. t Qty per Pack Mass (g)
SLEC-M3-B-EL 3 6.8 2.5 6 3.35 4 0.4 SKX-10 10 1 1 0.82
SLEC-M4-B-EL 4 7 3 7 4.5 5 0.4 SKX-15 15 1.2 1 1.9
SLEC-M5-B-EL 5 8.5 4 10 5.5 6 0.4 SKX-20 20 1.5 1 3.3
SLEC-M6-B-EL 6 10 4 12 6.5 8 0.5 SKX-25 25 2 1 6
SLEC-M8-B-EL 8 13 5 16 8.5 9 0.8 SKX-30 30 2.5 1 14.3

Material/Finish

SLEC-B SLEC-B-EL
Main Body SCM435 Ferrosoferric Oxide  Coating SCM435 Electroless Nickel Plating
Strength Class 10.9 10.9

*The hexalobular shape is prescribed by JIS B 1015:2008(ISO 10664:2005)“Hexalobular internal driving feature for bolts and screws”.

Application

Fixing workpieces and jigs and fine positional adjustment of heavy objects

Characteristics

  • When the screw is tightened, the workpiece is strongly clamped by the head, which is decentered from the shaft center of the screw. The wedge effect creates a large clamping force with low tightening torque.
  • The screw has a hexalobular socket* that can withstand high tightening torque.
  • Install and remove by using SKX Special Key.
  • SLEC-B-EL is electroless nickel(EN)plating type. It is intended for applications that require corrosion resistance.
  • Since the precision-processed guide receives the clamping load, durability during clamping is increased.

Usage example

Fixing Workpiece and Jigs

Mounting method

Mounting method

Part Number Part Number E M B H8 Adjustment Range min./max.
SLEC-M3-B SLEC-M3-B-EL 3.10~+0.3 M3 3.35 -0.142857143
SLEC-M4-B SLEC-M4-B-EL 3.150~+0.3 M4 4.5 -0.066666667
SLEC-M5-B SLEC-M5-B-EL 3.90~+0.3 M5 5.5 -0.066666667
SLEC-M6-B SLEC-M6-B-EL 4.650~+0.3 M6 6.5 -0.176470588
SLEC-M8-B SLEC-M8-B-EL 6.050~+0.5 M8 8.5 -0.28

Download PDF Catalog