S-91327A287 6-32 ASME B18.3 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
- Vibration-resistant secure fastening with permanent nylon patch thread locker that maintains integrity from -50° to 250°F
- Superior corrosion resistance thanks to 18-8 stainless steel construction and passivated surface treatment
- Precise component alignment through standardized shoulder diameter and length with tight manufacturing tolerances
- High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
- Reliable thread engagement achieved through Class 3A thread fit and UNC coarse thread profile
- Easy installation and removal with hex socket drive design requiring only 3/32" drive tool
- Industry compliance assurance meeting ASME B18.3 specifications and environmental regulations
Professional Applications & Engineering Value
This 6-32 UNC shoulder screw delivers critical engineering solutions where precise alignment and vibration resistance are paramount. The 18-8 stainless steel construction with passivated finish provides exceptional corrosion resistance in harsh environments, while the permanent nylon patch locking feature prevents loosening under dynamic loads. The standardized shoulder diameter and length ensure accurate component positioning in assemblies, making it ideal for precision machinery, automotive systems, and industrial equipment. The Class 3A thread fit guarantees consistent engagement while the hex socket drive enables efficient installation in confined spaces. These shoulder screws maintain structural integrity across temperature variations from -50° to 250°F, offering reliable performance in demanding industrial applications where fastener failure is not an option.
Specification Summary & Compliance
This shoulder screw features precision 6-32 UNC coarse threads with Class 3A fit for superior thread engagement. The shoulder diameter maintains tight tolerance of -0.004" to -0.002" with shoulder length tolerance of -0.005" to 0.005". Manufactured in compliance with ASME B18.3 standards and certified RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant for environmental safety. The mechanical properties include Rockwell B55 hardness and 70,000 psi tensile strength, ensuring reliable performance in industrial fastening applications.
