S-91045A038 1"-8 Flange Nuts

Key Features & Benefits at a Glance

• Enhanced Load Distribution with a 2" flange diameter that reduces surface pressure and prevents damage to connected materials
• Corrosion-Resistant Performance thanks to the black-oxide steel finish, providing durable protection in harsh industrial environments
• Precision Leveling Capability offering up to 1½° maximum correction for accurate alignment in machinery and structural applications
• Secure Fastening with Coarse Threads using 1"-8 UNC threads that resist loosening under vibration and enable quick assembly
• Reliable Thread Fit with Class 2B tolerance ensuring consistent engagement and reduced risk of cross-threading
• Integrated Washer Function eliminates the need for separate washers, saving installation time and reducing component count
• Environmental Compliance meeting RoHS 3 standards for safe use in regulated industries

Professional Applications & Engineering Value

This black-oxide steel flange nut is engineered to solve critical leveling and alignment challenges in heavy-duty industrial applications. The 2" flange diameter provides superior load distribution, preventing surface deformation in equipment bases and structural frames. With its 1"-8 UNC coarse thread and Class 2B thread fit, this leveling nut maintains secure fastening even under continuous vibration and dynamic loads common in manufacturing machinery, conveyor systems, and construction equipment. The integrated flange design eliminates separate washers, streamlining assembly while the 1½° maximum correction capability enables precise leveling of uneven surfaces. The black-oxide finish offers enhanced corrosion resistance, making it ideal for environments where moisture and chemicals are present.

Specification Summary & Compliance

This flange nut features 1"-8 UNC coarse threads with Class 2B thread fit for consistent engagement and reliable performance. The nut maintains dimensional accuracy with a flange diameter of 2", thickness of 0.25", and overall height of 1 35/64". Manufactured from steel with black-oxide surface treatment, the product is RoHS 3 (2015/863/EU) compliant with exemption 6(a) for lead as an alloying element in steel. The integrated steel washer provides additional bearing surface while the external hex drive style ensures compatibility with standard tools.