S-8077A617 5/16"-18 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 in harsh environments due to 316 stainless steel construction with protective black oxide finish
- Exceptional mechanical strength with 70,000 psi tensile strength and 35,000 psi shear strength for heavy-duty applications
- Precise Class 3A thread fit ensures secure fastening and reliable performance in critical assemblies
- Enhanced grip and tool engagement through knurled head texture and standard hex socket drive design
- Accurate shoulder positioning with controlled diameter and length tolerances for consistent component alignment
- Industry-standard compliance meeting ASME B18.3 specifications for guaranteed interchangeability and quality
- Environmental regulation compliance with RoHS 3 and REACH standards for global manufacturing applications
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw with black oxide finish provides critical corrosion protection in demanding industrial environments including marine, chemical processing, and outdoor equipment. The Class 3A thread fit and precision shoulder dimensions ensure exact component alignment while preventing rotation during operation. Engineered with 70,000 psi tensile strength, this socket head shoulder screw maintains structural integrity under high stress conditions. The knurled head texture combined with hex drive design offers superior torque transmission and prevents tool slippage during installation. Ideal for precision machinery, rotating assemblies, and pivot applications where dimensional accuracy and corrosion resistance are paramount.
Specification Summary & Compliance
This shoulder screw features 5/16"-18 UNC coarse threads with Class 3A fit for precision engagement. Shoulder diameter maintains -0.004" to -0.002" tolerance with shoulder length tolerance of -0.005" to 0.005". Manufactured to ASME B18.3 specifications for dimensional consistency. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Material hardness rated at Rockwell B79 for optimal durability.
