S-90031A564 Length 7/8" Wood Screws

Key Features & Benefits at a Glance

• Enhanced Corrosion Resistance: Black-oxide steel coating provides reliable protection against rust, extending screw lifespan in various wood environments.
• Superior Holding Power: Thread forming design creates strong, permanent threads in wood without pre-tapping, reducing installation time and improving joint integrity.
• Optimized Wood Compatibility: Specific drill bit sizes for hardwood (3/32") and softwood (5/64") ensure proper fit and maximum pull-out resistance.
• Clean Flush Installation: Standard flat head with 82° countersink angle sits perfectly flush with wood surfaces for professional, snag-free finishes.
• Efficient Drive Engagement: Phillips No. 2 drive offers secure bit engagement and controlled torque application during installation.
• Reliable Partial Threading: Partially threaded shank with 0.583" minimum thread length provides superior clamping force while preventing wood splitting.
• Environmental Compliance: Meets RoHS 3 and REACH regulations, ensuring safe use in commercial and residential woodworking applications.

Professional Applications & Engineering Value

These No. 8 wood screws with Black-Oxide Steel construction address critical challenges in wood fastening applications. The thread forming technology eliminates the need for separate tapping operations, significantly reducing assembly time while creating stronger thread engagement in both hardwood and softwood materials. The Phillips flat head design with standard profile ensures seamless countersinking at 82 degrees, providing flush surface finishes that prevent snagging in furniture, cabinetry, and structural wood assemblies. The partially threaded configuration concentrates holding power where needed most while minimizing the risk of wood splitting. With precise 15 threads per inch and pointed tip, these screws offer quick starts and consistent performance in production environments, making them ideal for high-volume wood manufacturing and professional carpentry projects.

Specification Summary & Compliance

These inch-system screws feature a No. 8 thread diameter (0.164") with 15 threads per inch and right-hand thread direction. The partially threaded design provides minimum 0.583" thread length with standard flat head profile (0.332" diameter, 0.1" height). Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring restricted substance compliance for global distribution and use in professional woodworking applications.