S-95446A634 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 360 Brass construction, ideal for harsh industrial environments and electrical applications.
- Enhanced durability and wear resistance from Rockwell B55 hardness, ensuring long service life under repetitive use.
- High tensile strength of 40,000 psi provides reliable fastening under significant mechanical loads.
- Precise alignment and smooth rotation due to the precisely machined 3/4" shoulder with tight diameter tolerance.
- Easy installation in confined spaces using the 5/64" hex socket drive, minimizing tool slippage.
- Secure and consistent thread engagement with Class 2A fit and 4-40 UNC coarse thread for quick assembly.
- Compliance with RoHS 3 and REACH regulations ensures environmental safety and suitability for global industrial markets.
Professional Applications & Engineering Value
This 360 Brass Shoulder Screw is engineered to address critical alignment and wear challenges in precision assemblies. The 3/4" shoulder length acts as a precise pivot or spacer, reducing friction and maintaining component alignment in rotating mechanisms like gears, bearings, and linkages. The 4-40 UNC coarse thread with Class 2A fit ensures rapid, secure fastening, while the hex socket drive allows for high-torque installation without damaging the head. Made from 360 Brass, it offers excellent electrical conductivity and corrosion resistance, making it ideal for electronics, marine hardware, and automotive applications where reliability and regulatory compliance are paramount. Its 40,000 psi tensile strength and Rockwell B55 hardness guarantee performance in high-stress environments, minimizing downtime and maintenance costs.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent engagement. The shoulder features precise dimensions: diameter of 1/8" (tolerance: -0.002" to 0") and length of 3/4" (tolerance: 0" to 0.003") to ensure accurate assembly. It is manufactured to meet RoHS 3 (2015/863/EU) with exemption 6(c) for lead in copper alloy and is REACH (EC 1907/2006) compliant, confirming its suitability for industrial use without hazardous substances.
