S-91418A585 5/16"-18 x 1 1/4" ASTM F912 Set Screws
Set Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Enhanced corrosion resistance with black-oxide coating for extended service life in demanding environments
- Superior holding power through Rockwell C45 hardened alloy steel construction preventing deformation under high stress
- Precise positioning capability with extended tip design ensuring secure component alignment and reduced slippage
- Quick installation efficiency with square head design allowing easy wrench access and high torque application
- Reliable thread engagement through Class 2A UNC coarse threads providing vibration resistance in dynamic applications
- Broad industrial compatibility with standardized 5/16"-18 thread size fitting common machinery and equipment
- Regulatory peace of mind with full compliance to ASTM F912, RoHS 3, and REACH environmental standards
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers critical engineering solutions for industrial assembly challenges. The extended tip design penetrates deeper into mating surfaces, creating positive mechanical locking that prevents axial movement in pulleys, gears, and collars. The UNC coarse thread configuration maintains holding strength in high-vibration environments where fine threads might loosen. With Rockwell C45 hardness, the fastener resists wear during repeated adjustments while the black-oxide surface treatment provides corrosion protection without dimensional changes. Ideal for heavy-duty machinery, automotive components, and manufacturing equipment where vibration resistance and long-term reliability are paramount.
Specification Summary & Compliance
Manufactured to Class 2A thread fit tolerances with UNC coarse threads (5/16"-18) ensuring consistent engagement. The 1-1/4" length and extended tip maintain precise dimensional control per ASTM F912 specifications. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations guarantees safe usage across industrial sectors.
