S-8077A386 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 and black oxide finish, ideal for harsh industrial environments
- Precise alignment and secure positioning thanks to the 1/4" shoulder diameter with tight tolerance control
- High-strength performance delivering 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
- Reliable fine-thread engagement with 10-32 UNF Class 3A threads ensuring vibration resistance and secure fastening
- Easy installation and removal featuring a knurled socket head with 1/8" hex drive for non-slip tool engagement
- Extended service life with Rockwell B79 hardness providing excellent wear resistance
- Regulatory compliance assurance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw with black oxide finish provides critical solutions for precision machinery and industrial equipment where alignment accuracy and corrosion resistance are paramount. The 10-32 UNF fine thread with Class 3A fit ensures secure fastening in high-vibration environments, while the precisely machined shoulder (1/4" diameter, 1-3/8" length) maintains component spacing and rotational stability in assemblies. The combination of 70,000 psi tensile strength and 35,000 psi shear strength makes these socket head shoulder screws ideal for pivots, axles, and guide pins in manufacturing equipment, automotive systems, and marine applications where both mechanical performance and environmental durability are essential.
Specification Summary & Compliance
This precision shoulder screw features 10-32 UNF fine threads with Class 3A thread fit for superior engagement. Shoulder dimensions include 1/4" diameter (-0.004" to -0.002" tolerance) and 1-3/8" length (-0.005" to 0.005" tolerance) with standard shoulder fit. Manufactured to ASME B18.3 specifications and compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring regulatory adherence for global industrial applications.
