S-90585A296 10-32 x 7/8" ASME B18.3, ASTM F879 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction with passivated surface treatment
• Exceptional thread engagement and vibration resistance achieved through Class 3A UNF fine threading for secure, precise fits
• High mechanical strength and load-bearing capability with 70,000 psi tensile strength and Rockwell B55 hardness
• Reliable flush mounting enabled by the standard 82° flat head profile and hex drive for clean, unobtrusive installations
• Full-length threading versatility provides consistent holding power along the entire 7/8" length for various material thicknesses
• Regulatory compliance assurance meeting ASME B18.3 specifications and environmental standards including RoHS 3 and REACH
• Precision dimensional control with tight head diameter tolerance ensuring consistent performance in automated assembly

Professional Applications & Engineering Value

This 316 stainless steel flat head screw delivers critical performance advantages in demanding industrial applications where corrosion resistance and mechanical reliability are paramount. The combination of UNF fine threading with Class 3A fit provides superior vibration resistance in machinery, automotive, and marine components, while the passivated finish enhances corrosion protection in chemical processing and coastal environments. The flat head design with hex drive allows for flush mounting in precision equipment and tight spaces, making it ideal for applications requiring both aesthetic cleanliness and structural integrity. With full threading along its 7/8" length, this fastener accommodates varying material thicknesses while maintaining consistent clamping force throughout assembly cycles.

Specification Summary & Compliance

This fastener features precision 10-32 UNF fine threads with Class 3A fit tolerance, ensuring exacting dimensional accuracy per ASME B18.3 specifications. Manufacturing complies with ASME B18.3 standards where applicable, with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The screw maintains tight dimensional controls including head diameter tolerance of -0.052" to 0" and standardized 82° countersink angle for consistent performance across industrial applications.