S-94115A576 5/16"-18 x 3/8" ASME B18.3 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
- Superior corrosion resistance with black-oxide coating on alloy steel, extending service life in harsh industrial environments.
- Precise Class 3A thread fit ensures tight, reliable fastening with minimal backlash for vibration-resistant assemblies.
- Non-marring nylon 6/6 tip protects sensitive surfaces from damage while providing secure, reusable locking.
- High-temperature resilience with nylon tip rated for -50° to 250° F, maintaining performance in thermal cycling conditions.
- Optimized hex drive design (5/32") allows high-torque installation with standard tools, reducing assembly time.
- Rockwell C28 hardness delivers excellent wear resistance and durability under repeated adjustments.
- Industry compliance assurance through ASME B18.3 standards and environmental regulations (RoHS 3, REACH).
Professional Applications & Engineering Value
This black-oxide alloy steel set screw with UNC coarse threads and Class 3A fit addresses critical challenges in precision machinery and automotive components. The headless hex drive design enables flush mounting in confined spaces, while the green nylon 6/6 plastic tip prevents galvanic corrosion and surface deformation on shafts, gears, and couplings. Engineered for industrial applications requiring vibration resistance, its coarse thread spacing facilitates quicker installation and higher clamp load retention compared to fine-thread alternatives. The combination of Rockwell C28 hardness and temperature-stable tip material ensures reliable performance in assembly lines, motor mounts, and precision equipment subjected to thermal expansion.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with 5/16"-18 UNC Class 3A threads and coarse pitch for optimal engagement. The black-oxide alloy steel construction maintains dimensional stability with a 3/8" length and 5/32" hex drive. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for hazardous substance restrictions.
