S-97345A389 10-32 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 reliability with 70,000 psi tensile strength and 35,000 psi shear strength for heavy-duty applications
- Precise Class 3A thread fit ensures tight, secure fastening with minimal backlash in precision assemblies
- Enhanced grip and tool engagement from the knurled socket head and 1/8" hex drive, reducing slippage during installation
- Fine UNF thread design provides superior vibration resistance and improved load distribution
- Consistent dimensional accuracy with controlled shoulder diameter and length tolerances for reliable alignment
- Full regulatory compliance with ASME B18.3, RoHS 3, and REACH standards for global industrial use
Professional Applications & Engineering Value
Engineered for precision alignment and rotational motion applications, this 316 stainless steel shoulder screw solves critical challenges in machinery assembly, automation systems, and precision instruments. The 10-32 UNF fine thread with Class 3A fit maintains clamping force under vibration while the precisely machined shoulder provides accurate component positioning. With Rockwell B79 hardness and 70,000 psi tensile strength, it withstands repetitive loading in conveyor systems, robotic arms, and medical equipment. The knurled socket head ensures secure tool engagement during high-torque installation, reducing assembly time and preventing damage to drive interfaces.
Specification Summary & Compliance
This shoulder screw maintains Class 3A thread fit with UNF thread specifications and controlled shoulder diameter tolerance (-0.004" to -0.002") for precision alignment. Manufactured to ASME B18.3 standards with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The inch system measurements ensure compatibility with North American machinery and equipment specifications.
