S-98694A212 5/16"-18 Square Nuts

Key Features & Benefits at a Glance

• Superior load distribution through square design prevents rotation and provides secure fastening in high-vibration environments
• Enhanced durability with Grade 5 steel construction withstands heavy-duty applications and demanding industrial conditions
• Quick installation with external square drive design allows for easy wrench access and efficient assembly
• Reliable thread engagement with Class 2B fit ensures consistent performance and reduces cross-threading risks
• Optimized for coarse threading with 5/16"-18 UNC pattern resists loosening under dynamic loads and vibration
• Environmental compliance meets RoHS 3 and REACH standards for safe use across regulated industries
• Standard inch sizing at 9/16" width ensures compatibility with existing tooling and assembly systems

Professional Applications & Engineering Value

This Grade 5 steel square nut delivers exceptional performance in demanding industrial settings where vibration resistance and reliability are critical. The external square drive design enables secure wrench engagement without rounding concerns, while the 5/16"-18 UNC coarse threads with Class 2B fit provide superior anti-loosening characteristics in machinery, structural frameworks, and heavy equipment applications. The square configuration offers increased surface contact area, distributing clamping force more effectively than hexagonal alternatives. Manufactured from high-strength steel, this nut maintains integrity under substantial tensile loads, making it ideal for construction, automotive, and manufacturing applications where fastener failure is not an option.

Specification Summary & Compliance

This square nut features precise Class 2B thread fit per UNC standards with 5/16"-18 coarse threading and right-hand thread direction. Dimensions include 9/16" width and 17/64" height in inch measurement system. The fastener meets Grade 5 strength classification and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for industrial applications with strict compliance requirements.