S-94105A358 1/4"-28 x 7/8" ASME B18.3, 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
- Superior corrosion resistance with black-oxide alloy steel coating, extending service life in demanding industrial environments.
- Precise Class 3A thread fit ensures tight, secure fastening with minimal backlash for vibration-resistant assemblies.
- High Rockwell C45 hardness provides excellent wear resistance and maintains thread integrity under repeated adjustments.
- Hex headless design with 1/8" drive allows for flush mounting and easy installation in confined spaces using standard tools.
- Flat tip configuration delivers maximum surface contact for secure component positioning without damaging shafts.
- Fine UNF thread spacing (1/4"-28) offers enhanced clamping force distribution and improved load handling.
- Full regulatory compliance with ASME B18.3, RoHS 3, and REACH standards for safe, reliable global industrial use.
Professional Applications & Engineering Value
This black-oxide alloy steel set screw is engineered to address critical industrial challenges like component slippage and corrosion-induced failure. Its Class 3A UNF fine threads provide superior holding power in high-vibration applications such as machinery alignment, precision tooling, and automotive assemblies. The headless hex drive design enables seamless integration into rotating parts and tight spaces, while the flat tip prevents marring of precision shafts and collars. Combined with Rockwell C45 hardness, it ensures long-term reliability in dynamic load conditions, making it ideal for OEM manufacturing, maintenance repairs, and aerospace components where dimensional stability and corrosion resistance are paramount.
Specification Summary & Compliance
This set screw maintains Class 3A thread fit tolerances per UNF standards with a precise 1/4"-28 fine thread profile and 7/8" length. Manufacturing adheres to ASME B18.3 specifications (ASTM F912) for dimensional consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and unrestricted use in international industrial supply chains.
