S-94564A273 4-40 x 1 1/4" Set Screws

Key Features & Benefits at a Glance

• Excellent chemical resistance for reliable performance in harsh industrial environments
• Secure, vibration-resistant fastening with coarse UNC threading and Class 2A fit for precise engagement
• Non-conductive and non-magnetic properties ideal for electrical and sensitive equipment applications
• Wide temperature tolerance from -40° to 185°F for stable performance across diverse operating conditions
• Compact headless design with 3/64" hex drive for flush mounting in space-constrained assemblies
• Environmentally compliant construction meeting RoHS 3 standards for sustainable manufacturing
• Durable nylon material providing corrosion resistance without requiring additional coatings

Professional Applications & Engineering Value

This 4-40 UNC nylon plastic set screw delivers critical engineering advantages where metal fasteners fall short. The right-hand coarse threading with Class 2A thread fit ensures rapid installation and secure holding power in plastic components, electronic enclosures, and precision instruments. The headless design with 3/64" hex drive allows for flush mounting in tight spaces while maintaining tool accessibility. Manufactured from off-white nylon plastic, this set screw eliminates galvanic corrosion concerns in multi-material assemblies and provides excellent electrical insulation. The flat tip distributes clamping force evenly, preventing damage to sensitive surfaces in adjustment and locking applications across automotive, aerospace, and electronics industries.

Specification Summary & Compliance

This inch system fastener features 4-40 UNC coarse threads with Class 2A thread fit ensuring precise dimensional accuracy and reliable engagement. The 1-1/4" length and 0.112" thread diameter provide optimal fastening capabilities for standard applications. Manufactured to meet RoHS 3 (2015/863/EU) compliance for environmental safety, this set screw operates within a temperature range of -40° to 185°F without performance degradation. The 3/64" hex drive and flat tip configuration deliver consistent installation torque and secure positioning in various industrial settings.