S-90337A381 4-40 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 construction, ideal for harsh industrial environments.
- Precise alignment and reduced wear due to the exact 1/8" shoulder diameter and 3/4" shoulder length for stable component positioning.
- High strength and durability with 70,000 psi tensile strength and Rockwell B55 hardness, ensuring reliable performance under load.
- Easy installation in confined spaces using the low profile socket head and 5/64" hex drive for secure, flush mounting.
- Consistent thread engagement with Class 2A UNC coarse threads, providing reliable fastening and vibration resistance.
- Environmental and regulatory compliance with RoHS 3 and REACH standards, meeting strict industry safety requirements.
- Right-hand thread design for standard assembly processes, enhancing efficiency in production lines.
Professional Applications & Engineering Value
This 4-40 UNC low profile socket head shoulder screw is engineered to address critical alignment challenges in precision assemblies, such as in machinery, electronics, and automotive systems. The 18-8 stainless steel material offers excellent corrosion resistance, reducing maintenance in demanding environments like manufacturing or outdoor applications. The precise shoulder diameter and length ensure accurate component positioning, minimizing misalignment and wear over time. With a hex drive and low profile head, it allows for easy installation in tight spaces, while the Class 2A thread fit and coarse UNC threads provide secure, vibration-resistant connections. Ideal for use as alignment pins or in precision fasteners, this screw enhances operational reliability and longevity in industrial settings.
Specification Summary & Compliance
This shoulder screw features a Class 2A thread fit with UNC coarse threads, ensuring dimensional accuracy and compatibility with standard components. It adheres to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming it is free from hazardous substances. Manufactured from 18-8 stainless steel, it meets industry standards for durability and performance in precise engineering applications.
