S-97345A898 3/4"-10 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 industrial environments and chemical exposure
- Exceptional mechanical strength offering 70,000 PSI tensile strength and 35,000 PSI minimum shear strength for demanding applications
- Precise Class 3A thread fit ensures tight tolerances and reliable engagement in high-vibration assemblies
- Secure installation and removal with knurled socket head and 1/2" hex drive preventing tool slippage
- Accurate component alignment through 1" diameter shoulder with controlled diameter and length tolerances
- Coarse 3/4"-10 UNC threading provides faster assembly and reduced cross-threading risk in production environments
- Full regulatory compliance meeting ASME B18.3 specifications plus RoHS 3 and REACH environmental standards
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw delivers critical performance in precision machinery, automation systems, and rotating assemblies where alignment accuracy and corrosion resistance are paramount. The Class 3A thread fit maintains dimensional stability under thermal cycling and vibration, while the knurled socket head ensures reliable torque transmission during repeated maintenance cycles. The 1" shoulder diameter with tight tolerances provides exact bearing surfaces for gears, pulleys, and linkages, eliminating the need for additional spacing components. With 70,000 PSI tensile strength and full compliance with ASME B18.3 standards, this fastener solves alignment, corrosion, and reliability challenges in industrial equipment, food processing machinery, and marine applications.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit for precision applications. Features include 3/4"-10 UNC coarse threads, 1" shoulder diameter with -0.004" to -0.002" tolerance, and 1-1/4" shoulder length with ±0.005" tolerance. Material certification includes 316 stainless steel with Rockwell B79 hardness. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for global industrial use.
