S-97345A806 1/2"-13 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, ideal for harsh chemical and marine environments
- Precise component alignment through the 5/8" shoulder diameter with tight tolerance control
- High-strength performance with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
- Secure hex drive engagement with 5/16" drive size and knurled head for anti-slip torque application
- Reliable thread engagement with Class 3A fit UNC coarse threads ensuring vibration resistance
- Extended service life with Rockwell B79 hardness providing excellent wear resistance
- Regulatory compliance meeting ASME B18.3 specifications and environmental standards (RoHS 3, REACH)
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw delivers exceptional engineering value in precision assembly applications where alignment accuracy and corrosion resistance are critical. The 1/2"-13 UNC coarse thread with Class 3A fit provides superior vibration resistance in high-stress environments, while the precisely machined shoulder maintains component positioning in rotating assemblies, pivoting mechanisms, and bearing mounts. The socket head design with hex drive and knurled texture ensures secure tool engagement during installation, preventing cam-out in high-torque applications. With excellent chemical resistance and 70,000 psi tensile strength, this shoulder screw solves alignment and durability challenges in industrial machinery, food processing equipment, and marine applications where exposure to corrosive elements would compromise ordinary fasteners.
Specification Summary & Compliance
This precision shoulder screw features 1/2"-13 UNC coarse threads with Class 3A thread fit for superior engagement, a 5/8" shoulder diameter with tight tolerance control (-0.004" to -0.002"), and 3/4" thread length. Manufactured to ASME B18.3 specifications with material hardness of Rockwell B79, the fastener delivers reliable performance in demanding applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.
