BosScrew™ Anti-Loosen Fasteners | ITW EBA
BosScrew™ fasteners eliminate costly brass inserts and simply stay tight regardless of vibration, temperature, or time with superior reusability.
BosScrew™
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® screws
| Performance Impovements with BosScrew™ | Material | |||
| 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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How can you reduce fastening costs while improving assembly reliability in plastic component manufacturing?
BosScrew™ eliminates expensive brass inserts and installation labor by installing directly into molded thermoplastic bosses, reducing material costs by 30-40% while delivering superior vibration resistance and reusability. Manufacturers report significant cost savings and improved quality control through simplified assembly processes. Contact ITW EBA today to explore how BosScrew™ can optimize your plastic fastening applications.
The BosScrew™ fastener delivers exceptional value through its large Drive/Strip window, ensuring proper assembly with automatic drivers without stripping, and its proven ability to maintain performance through over 100 reuse cycles without loosening or degradation. Available in M3.0 and larger sizes with application flexibility as low as 1.5X fastener diameter in boss thickness depth, BosScrew™ enables manufacturers to minimize boss geometry and reduce residual assembly stresses. With performance improvements ranging from +35% to +447% across various thermoplastic materials compared to conventional HI-LO® screws, this ITW EBA solution represents the optimal choice for plastic product manufacturers seeking reliable, cost-effective, and serviceable fastening solutions.