The waterproof screw "Asfa(R) WP" combines stable waterproofing with high axial force due to sinkage reduction.
"Asfa(R) WP" is a new concept waterproof screw that incorporates a flat washer in addition to an O-ring located under the neck. Since the O-ring can be positioned on the outer circumference of the screw head, it maintains stable waterproof performance even if there is a shift in the fastening component. Moreover, it ensures sufficient contact surface, allowing for fastening with higher axial force without causing the fastening component to sink. Additionally, in the automatic screw tightening process, the flat washer (metal) makes contact with the chute rail of the screw feeding machine, enabling smooth transportation. **Features of Asfa(R) WP** - It exhibits stable waterproof performance with minimal influence from the positional shift of the fastening component. - By reducing the sinking of the fastening component, it allows for fastening with higher axial force. - The contact of the flat washer with the chute rail in the automatic screw tightening process enables smooth transportation. *For more details, please refer to the PDF document or feel free to contact us.*
Inquire About This Product
Related Videos
basic information
【Compatible Sizes and Materials】 ■Screw sizes: φ3, φ4, φ5 ■Screw and washer materials: Iron, SUS, etc. ■O-ring materials: EPDM, NBR, SR, FKM, etc. *The materials for the drive part, screw part, and O-ring can be customized. Please feel free to contact us. *Manufacturer: Nitto Seiko Co., Ltd.
Price range
Delivery Time
Applications/Examples of results
■Products that require stable waterproof performance (outdoor equipment, measuring instruments, etc.) ■Products that require fastening with high axial force (automotive parts, railway-related items, etc.) ■Automation of O-ring screw fastening (for production sites troubled by chocolate stops) *For more details, please refer to the PDF document or feel free to contact us.*
catalog（1）
Download All Catalogs
Company information
As the advancement of IoT, changes in power sources, the expansion of AI applications, and the shift towards systems that do not rely on human labor in manufacturing are leading various industries into a period of transformation, we are proposing a variety of solutions tailored to our customers' needs.
