BosScrew™
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® screwsMaterial | ||||
ABS Unfilled | Polypropylane unfilled | Acetal unfilled | 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% |
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