S-91410A973 1 1/4"-7 x 4" ASME B18.6.2 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 holding power with coarse UNC threads that resist loosening under vibration and heavy loads
- Exceptional durability from Rockwell B80 hardened steel construction that withstands repeated use
- Easy installation and removal with external square drive design requiring minimal clearance
- Precise thread engagement with Class 2A fit ensuring reliable fastening in industrial applications
- Maximum torque transmission through the substantial 1 1/4" square head design
- Environmental compliance meeting RoHS 3 and REACH standards for safe industrial use
- Extended reach capability with 4" length for deep-set applications requiring substantial penetration
Professional Applications & Engineering Value
This heavy-duty steel set screw is engineered to solve critical fastening challenges in demanding industrial environments. The 1 1/4"-7 UNC coarse thread configuration provides superior resistance to vibration-induced loosening, making it ideal for machinery, equipment manufacturing, and structural applications where reliability is paramount. The square head design with external drive allows for high-torque installation even in confined spaces, while the Rockwell B80 hardness ensures the fastener maintains its structural integrity under repeated stress cycles. The 4" length enables deep penetration into components, creating secure connections in heavy machinery, industrial couplings, and power transmission systems where standard fasteners would fail.
Specification Summary & Compliance
This set screw features Class 2A thread fit per UNC standards with precise dimensional accuracy for reliable performance. Manufactured in compliance with ASME B18.6.2 specifications for square head set screws, ensuring consistent quality and interchangeability. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for industrial applications requiring regulatory compliance. Thread specifications include 1 1/4"-7 UNC coarse thread with right-hand direction, providing optimal engagement in various industrial materials.
