S-8077A538 5/8"-11 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 and black oxide finish, ideal for harsh industrial environments
- Exceptional mechanical strength delivering 70,000 psi tensile and 35,000 psi shear strength for heavy-duty applications
- Precise thread engagement with Class 3A UNC coarse threads ensuring reliable fastening and vibration resistance
- Secure installation and removal featuring a knurled socket head with 3/8" hex drive for non-slip tool grip
- Accurate component alignment through the precision-machined shoulder with tight diameter and length tolerances
- Industry compliance assurance meeting ASME B18.3 specifications and environmental regulations (RoHS 3, REACH)
- Optimized for high-stress applications with Rockwell B79 hardness providing excellent wear resistance
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw delivers critical engineering solutions where precision alignment and corrosion resistance are paramount. The black oxide finish enhances surface durability while maintaining corrosion protection in demanding environments like chemical processing, marine equipment, and food machinery. The 5/8"-11 UNC coarse threads with Class 3A fit provide superior vibration resistance in high-stress assemblies, while the precision shoulder ensures accurate component positioning in rotating mechanisms, pivoting joints, and bearing mounts. The knurled socket head design prevents tool slippage during installation, reducing assembly time and improving worker safety in industrial maintenance and OEM applications.
Specification Summary & Compliance
Manufactured to exacting standards with Class 3A thread fit per UNC specifications and shoulder diameter tolerance of -0.004" to -0.002". Complies with ASME B18.3 dimensional requirements and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Thread specifications include 5/8"-11 UNC coarse pattern with 7/8" thread length, while shoulder dimensions maintain 3/4" diameter and 1 1/4" length with tight manufacturing tolerances.
