Best Sale

50 Years of Electronic Components | Supply | ITW Lumex Switch

Based in Taiwan, ITW Electronic Business Asia Co., Ltd., since 1970, is a leading manufacturer of for electronic components.

Electromechanical components such as switches, fasteners, dampers supplied with physical and ESD protection for sensitive electronic components, and barrier protection that resist all of nature's elements, including heat, fire, wind, UV, pests and allergens.

ITW Lumex Switch's electronic components are suitable for the automotive, appliance, instrument, medical, construction, and IT industries. With both advanced technology and 50 years of experience, ITW Lumex Switch always makes sure to meet each customer's demands.


The BosScrew™ thread exploits a plastic part's natural tendency to creep under stress and will Simply Stay Tight™ regardless of time, temperature or vibration. The specially engineered dimples hold the fastener as driven and maintain serviceability and reusability.

BosScrew™ Thread Fastener Benefits

LOWER COST - BosScrew™ fasteners eliminate costly brass inserts and their associated installation costs. They can be installed directly into molded thermoplastic bosses and form their own mating threads.

HIGHER QUALITY - The BosScrew™ thread provides a large Drive/Strip window to ensure proper assembly with automatic drivers without stripping out.

BETTER PERFORMANCE - Since the BosScrew™ does not rely on tension to keep the screws tight, lower seating torques can be used to minimize Boss geometry, material, and residual assembly stresses.

IMPROVED SERVICEABILITY - Performance is maintained through multiple service and reuse cycles. BosScrew? thread fastener has been successfully tested over 100 reuse cycles without stripping out or loosing.

BosScrew™ Thread Fastener Application Parameters

The BosScrew™ can be used in bosses as low as 1.5X its diameter in boss thickness depth, e.g. an M2.5 BosScrew™ can be used in a 3.75mm deep hole. The hole diameter should be equivalent to the Major Diameter of the low, non-dimpled threads.

BosScrew™ thread fastener is available in M3.0 and larger sizes.

Performance Impovements with BosScrew™
% Improvement using the M4 ITW BosScrew™ against M4 HI-LO® screws

Performance Impovements with BosScrew™Material
ABS UnfilledPolypropylane
30% Glass
Filled PBT
Drive Strip Window+66%+48%+35%+59%
Ambient Backout (Torque to Loosen)+86%+134%+139%+36%
Heat Cycled Backout (Torque to Loosen)+447%+331%+247%+73%

BosScrew™ Thread Fastener