S-8077A255 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel and black oxide finish for extended service life in harsh environments
• Precise component alignment through Class 3A thread fit and standard shoulder fit for reliable assembly performance
• High mechanical strength delivering 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
• Secure installation and removal with hex socket drive and knurled head for improved grip during tool engagement
• Consistent dimensional accuracy with controlled shoulder diameter and length tolerances for repeatable positioning
• Enhanced durability from Rockwell B79 hardness providing excellent wear resistance in dynamic applications
• Regulatory compliance meeting RoHS 3 and REACH standards for use in regulated industrial sectors

Professional Applications & Engineering Value

This 8-32 UNC thread shoulder screw delivers exceptional engineering value in precision machinery and industrial equipment. The 316 stainless steel construction combined with black oxide finish provides superior protection against corrosion in challenging environments including marine, chemical processing, and outdoor applications. The Class 3A thread fit ensures precise engagement with mating components, while the standardized shoulder diameter maintains accurate spacing and alignment in assemblies. The coarse thread spacing facilitates quicker installation while the knurled head texture enhances grip during manual handling. These shoulder screws are engineered to withstand high rotational forces and mechanical stress in applications ranging from precision instruments to heavy-duty industrial machinery, offering reliable performance where dimensional stability and corrosion resistance are critical.

Specification Summary & Compliance

This precision shoulder screw features 8-32 UNC right-hand threads with Class 3A fit for superior thread engagement. Critical dimensions include shoulder diameter of 7/32" (tolerance: -0.004" to -0.002") and shoulder length of 15/16" (tolerance: -0.005" to 0.005") ensuring consistent positioning accuracy. Manufactured to industry standards with hex drive socket (3/32") and standard socket head profile. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting environmental and safety requirements for industrial applications worldwide.