S-90337A321 8-32 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 18-8 stainless steel and passivated finish, ideal for harsh environments
- High tensile strength of 70,000 psi ensures reliable load-bearing capacity in demanding applications
- Precise shoulder fit tolerance (-0.001" to 0") guarantees accurate alignment and reduced assembly vibration
- Low-profile socket head design allows for compact installations and easy access with a 3/32" hex drive
- Class 2A UNC coarse threads provide quick assembly and secure fastening in various materials
- Rockwell B55 hardness offers excellent wear resistance and long-term durability
- Compliance with RoHS 3 and REACH ensures environmental safety and regulatory adherence for global supply chains
Professional Applications & Engineering Value
This 8-32 UNC low profile socket head shoulder screw in 18-8 stainless steel is engineered to address critical alignment and corrosion challenges in precision machinery. The passivated finish enhances its resistance to oxidation and chemical exposure, making it suitable for automotive, aerospace, and electronic assembly applications where moisture or contaminants are present. The precise shoulder diameter and length tolerances minimize play, ensuring stable rotational components in pivots, gears, and linkages. With a coarse UNC thread and right-hand direction, it facilitates rapid installation in tight spaces, reducing labor time while maintaining 70,000 psi tensile strength for high-stress environments. This fastener delivers consistent performance in robotics, conveyor systems, and industrial equipment, where reliability and compliance with RoHS and REACH standards are paramount.
Specification Summary & Compliance
This shoulder screw adheres to Class 2A thread fit for standard UNC 8-32 coarse threading, with shoulder diameter tolerance of -0.001" to 0" and length tolerance of 0" to 0.002" for precise assembly. Manufactured from 18-8 stainless steel with a passivated finish, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for international industrial use.
