S-90275A143 6-32 x 3/16" ASME B18.6.3 Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments
• Exceptional holding power from 60,000 psi tensile strength and Rockwell B70 hardness, preventing fastener failure under stress
• Precise flush installation with 82° countersink angle and undercut flat head profile for seamless surface finishing
• Reliable thread engagement through Class 2A thread fit and UNC coarse threading, ensuring vibration-resistant connections
• Quick manual installation with slotted drive design, enabling efficient assembly without specialized tools
• Full-threaded coverage along the 3/16" length, providing maximum grip strength in shallow applications
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards (RoHS 3, REACH)

Professional Applications & Engineering Value

These 6-32 UNC flat head screws deliver critical engineering solutions where flush mounting and high-strength fastening are paramount. The zinc-plated steel construction provides essential corrosion protection for electrical enclosures, machinery panels, and automotive components exposed to moderate environmental conditions. The undercut flat head profile with 82° countersink angle ensures precise seating without protrusion, eliminating interference issues in precision assemblies. With coarse UNC threading and Class 2A thread fit, these screws maintain secure connections in materials where fine threads might strip, while the slotted drive accommodates both manual and automated installation processes. The combination of 60,000 psi tensile strength and full threading makes these fasteners ideal for applications requiring maximum pull-out resistance in limited depth scenarios.

Specification Summary & Compliance

Manufactured to ASME B18.6.3 specifications with Class 2A thread fit tolerance for reliable engagement. Features UNC coarse threads (6-32 size) with 0.138" thread diameter and 3/16" length. The 82° countersink angle and undercut head profile ensure proper seating in standard countersunk holes. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making them suitable for global industrial applications.