S-93580A552 4-40 x 1 1/4" Steel Press-Fit Studs

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding industrial environments.
• Maximum holding power and pull-out resistance due to the press-fit design, ensuring a permanent, vibration-resistant assembly in sheet metal.
• Simplified and faster installation with a precise 0.111" hole diameter requirement, minimizing assembly time and labor costs.
• Reliable and consistent thread engagement with a Class 2A thread fit and fully threaded 4-40 UNC coarse thread for robust fastening.
• Broad material compatibility, designed for use in materials as thin as 0.04", offering versatility across various applications.
• Enhanced assembly integrity with a tight hole size tolerance of 0.000" to 0.003" for a secure, press-fit connection.
• Compliance with environmental regulations, being RoHS 3 compliant for use in global markets with strict substance controls.

Professional Applications & Engineering Value

These 4-40 UNC steel press-fit studs are engineered to solve critical challenges in sheet metal assembly. The zinc-plated finish provides a protective barrier against corrosion, essential for electronics enclosures and outdoor equipment. The fully threaded design and coarse UNC threading ensure high-strength, reliable fastening that resists loosening under vibration, making them ideal for automotive, aerospace, and industrial machinery applications. Their precise press-fit installation into a 0.111" diameter hole creates a permanent, high-retention stud without the need for welding or adhesives, streamlining production and reducing total installed cost.

Specification Summary & Compliance

This stud features a Class 2A thread fit per unified inch standards, ensuring dimensional accuracy and interchangeability. It is designed for a hole diameter of 0.111" (No. 34 drill bit) with a tight tolerance of 0.000" to 0.003". The product is manufactured in accordance with industry standards for press-fit studs and is RoHS 3 (2015/863/EU) compliant, meeting global environmental directives for hazardous substance restrictions.