S-95090A408 5/8"-8 ASTM B505 Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Superior wear resistance and self-lubricating properties from 932 Bearing Bronze material, reducing maintenance needs and extending service life in high-friction applications.
• Precise 0.125" linear travel per revolution enables accurate positioning and smooth motion control in automated systems.
• Left-hand ACME thread design provides reliable performance in specialized setups requiring reverse or counter-rotational movement.
• Class 2G thread fit ensures consistent engagement with mating components, minimizing backlash and improving operational stability.
• ASTM B505 compliance guarantees material integrity, ensuring consistent mechanical properties and reliability in industrial environments.
• RoHS 3 compliance with exemption meets environmental regulations while maintaining optimal performance in copper alloy applications.
• Corrosion-resistant bronze construction offers long-term durability in demanding conditions without compromising thread accuracy.

Professional Applications & Engineering Value

This 5/8-8 left-hand ACME threaded bronze nut delivers exceptional value in precision linear motion systems where reverse threading and reliable positioning are critical. The 932 Bearing Bronze composition provides natural lubricity and excellent wear characteristics, significantly reducing galling and seizing in high-load applications. Engineers specify this component for machinery requiring left-hand thread direction in clamping mechanisms, adjustable fixtures, and specialized actuators where standard right-hand threads are impractical. The Class 2G thread fit maintains precise tolerances throughout extended operation, while the single-start thread design ensures predictable linear advancement of 0.125" per revolution. This nut solves common engineering challenges in industrial automation, CNC equipment, and precision positioning systems by offering corrosion resistance, reduced maintenance intervals, and consistent performance under continuous operation.

Specification Summary & Compliance

This ACME lead screw nut features a 5/8-8 left-hand thread with Class 2G fit according to standard inch measurement system requirements. The component delivers 0.125" travel distance per turn with single-start thread configuration. Manufacturing complies with ASTM B505 standards for bronze castings, ensuring material quality and performance consistency. The product is RoHS 3 (2015/863/EU) compliant with exemption 6(c) for lead in copper alloys, meeting environmental regulations while maintaining optimal mechanical properties for industrial applications.