S-97345A581 1/4"-20 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
- Superior corrosion resistance with 316 stainless steel construction for long-lasting performance in harsh environments
- Precise component alignment through Class 3A thread fit ensuring reliable assembly and reduced vibration
- High-strength fastening capability with 70,000 psi tensile strength and 35,000 psi shear resistance for demanding applications
- Easy installation and removal with 5/32" hex drive and knurled head for improved grip during tool operation
- Consistent dimensional accuracy with standard shoulder fit and UNC coarse threads for quick assembly
- Enhanced durability with Rockwell B79 hardness providing excellent wear resistance
- Regulatory compliance assurance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw delivers exceptional engineering value in industrial applications where corrosion resistance and precision are critical. The 1/4"-20 UNC coarse threads with Class 3A fit provide superior thread engagement, reducing the risk of cross-threading and ensuring reliable performance in high-vibration environments. The combination of 70,000 psi tensile strength and 35,000 psi shear strength makes these socket head shoulder bolts ideal for machinery, automotive, and manufacturing equipment where components require precise alignment and secure fastening. The knurled head and 5/32" hex drive facilitate easy installation even in confined spaces, while the standard shoulder diameter maintains proper component spacing in assemblies.
Specification Summary & Compliance
Manufactured to exacting standards, this shoulder screw features Class 3A thread fit precision with UNC coarse thread form. The shoulder diameter maintains tight tolerance of -0.004" to -0.002" while shoulder length tolerance ranges from -0.005" to 0.005". Compliance includes ASME B18.3 specifications, RoHS 3 (2015/863/EU) compliance, and REACH (EC 1907/2006) environmental standards, ensuring suitability for regulated industrial applications.
