S-91273A673 1/2"-13 Shoulder Screws
Shoulder 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 18-8 stainless steel and black oxide finish, ideal for harsh industrial environments.
- High tensile strength of 70,000 psi ensures reliable load-bearing capacity in demanding applications.
- Precision shoulder length of 2 3/4" with tight tolerances for accurate alignment and reduced assembly errors.
- Knurled head and hex drive provide secure, non-slip grip during installation and removal.
- Class 2A thread fit guarantees smooth engagement and consistent performance in coarse UNC threading.
- Rockwell B55 hardness offers excellent durability and wear resistance over extended use.
- Compliance with RoHS 3 and REACH ensures environmental safety and regulatory adherence for global supply chains.
Professional Applications & Engineering Value
This shoulder screw is engineered to address critical alignment and strength challenges in industrial machinery, automation systems, and precision equipment. The 18-8 stainless steel construction, combined with a black oxide finish, provides robust protection against rust and chemical exposure, extending service life in humid or corrosive settings. The 2 3/4" shoulder length with minimal tolerance variations ensures exact positioning for components like bearings, gears, and linkages, reducing vibration and misalignment issues. With a coarse UNC thread and hex drive, it allows for quick, secure fastening in high-stress applications, from conveyor systems to robotic arms, delivering reliable performance where precision and durability are paramount.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent engagement. Dimensions include a shoulder diameter of 1/2" (tolerance: -0.004" to -0.002") and shoulder length of 2 3/4" (tolerance: -0.005" to 0.005"), ensuring precise manufacturing. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting safe and sustainable industrial use.
