S-94383A120 10-24 ASME B18.3, ASTM A574 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional strength-to-weight ratio with 140,000 psi tensile strength and 84,000 psi shear strength for reliable performance in high-stress applications
• Superior corrosion resistance through black oxide finish, extending service life in demanding industrial environments
• Precision Class 3A thread fit ensures secure fastening and vibration resistance in critical assemblies
• Knurled socket head design provides enhanced grip and slip resistance during installation with standard hex drive
• Rockwell C32 hardness rating maintains dimensional stability and wear resistance under repeated use
• Standardized shoulder dimensions with tight tolerances for precise alignment in machinery and rotational components
• Full regulatory compliance including ASME B18.3, RoHS 3, and REACH for global industrial acceptance

Professional Applications & Engineering Value

This alloy steel shoulder screw with 10-24 UNC coarse thread and 3/8" shoulder length delivers critical engineering solutions for precision machinery and industrial equipment. The black oxide finish provides essential corrosion protection in harsh operating environments, while the Rockwell C32 hardness ensures maintained dimensional accuracy under mechanical stress. The knurled socket head with hex drive facilitates secure installation in confined spaces, preventing tool slippage during torque application. These shoulder screws are engineered to serve as precise axles, pivots, and alignment guides in automation systems, manufacturing jigs, and rotating assemblies where Class 3A thread fit guarantees vibration-resistant fastening. The combination of high tensile strength and controlled shoulder dimensions makes them ideal for applications requiring exact component spacing and rotational clearance.

Specification Summary & Compliance

This precision shoulder screw features 10-24 UNC coarse threads with Class 3A fit for superior thread engagement. Critical dimensions include 3/8" shoulder length with tolerance of -0.005" to 0.005" and 1/4" shoulder diameter with tolerance of -0.004" to -0.002". Manufactured to ASME B18.3 specifications using ASTM A574 alloy steel, the component demonstrates full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use.