S-91030A038 1"-8 Flange Nuts

Key Features & Benefits at a Glance

• Enhanced load distribution with a 2" flange diameter and 0.25" thickness, reducing surface pressure and preventing damage to assembled materials.
• Superior corrosion resistance from the black-oxide steel finish, extending service life in harsh industrial environments.
• Reliable coarse threading (UNC) ensures quick and secure fastening, minimizing cross-threading risks in high-vibration applications.
• Precise Class 2B thread fit guarantees consistent engagement and smooth assembly with standard 1"-8 UNC bolts.
• External hex drive design allows for easy installation and removal using common tools, improving maintenance efficiency.
• RoHS 3 compliance meets environmental regulations, ensuring safe use in regulated industries without lead concerns.
• Heavy-duty construction delivers exceptional durability for demanding applications like machinery and structural assemblies.

Professional Applications & Engineering Value

This black-oxide steel flange nut is engineered to address common industrial fastening challenges, such as loosening under vibration and corrosion-induced failure. The 2" flange diameter distributes clamping force evenly, protecting soft surfaces and reducing the need for washers. With UNC coarse threads and Class 2B fit, it ensures rapid, secure installation in equipment like heavy machinery, automotive systems, and construction frameworks. The black-oxide coating provides a robust barrier against moisture and chemicals, making it ideal for outdoor or corrosive settings. Its external hex drive simplifies maintenance, supporting efficient operations in manufacturing and assembly lines where reliability is critical.

Specification Summary & Compliance

This flange nut adheres to UNC thread standards with a 1"-8 coarse thread and Class 2B thread fit for precise dimensional accuracy. It meets RoHS 3 (2015/863/EU) compliance under exemption 6(a) for lead as an alloying element in steel, ensuring environmental safety. Manufactured with a standard hex nut profile and right-hand thread direction, it aligns with common industrial specifications for reliable performance in heavy-duty applications.