S-95270A163 1 1/4"-5 ASTM B16 Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Enhanced Durability - 360 brass construction with Rockwell B55 hardness provides excellent wear resistance and long service life in demanding mechanical applications.
• Precision Movement - Delivers smooth, reliable 0.2" travel per turn for accurate positioning and consistent performance in lead screw systems.
• Superior Thread Engagement - Class 2G thread fit ensures optimal clearance and reduced binding for smoother operation and extended component life.
• Industry Standard Compliance - Manufactured to ASTM B16 specifications, guaranteeing material quality and dimensional consistency.
• Efficient Power Transmission - Single thread start design with 1:1 speed ratio provides direct, efficient motion transfer without speed reduction.
• Right-Hand Thread Compatibility - Standard right-hand threading ensures broad compatibility with common ACME lead screw configurations.
• Robust Square Design - Square nut profile offers superior anti-rotation characteristics and easier installation in various mounting scenarios.

Professional Applications & Engineering Value

This 1 1/4"-5 ACME thread brass square nut delivers exceptional value in precision motion control systems where reliability and smooth operation are critical. The 360 brass material with Rockwell B55 hardness provides optimal balance between machinability and durability, resisting galling and wear in repetitive motion applications. The Class 2G thread fit ensures proper clearance for lubricant retention while maintaining precise engagement with mating screws, reducing friction and preventing seizing in high-cycle operations. Engineered for lead screw assemblies in industrial automation, CNC positioning systems, and precision lifting equipment, this nut's 0.2" travel per turn and single thread start design offer predictable, consistent movement for accurate positioning. The square nut configuration provides stable anti-rotation performance, making it ideal for applications requiring secure mounting in machinery beds, linear actuators, and precision measurement devices.

Specification Summary & Compliance

This ACME lead screw nut features 1 1/4"-5 ACME thread with Class 2G thread fit tolerance, ensuring proper clearance and smooth operation. The component is manufactured from 360 brass meeting ASTM B16 material specifications, with Rockwell B55 hardness for consistent performance. The nut utilizes right-hand threading with single thread start design and maintains 1:1 speed ratio for direct motion transfer. Manufactured to inch system dimensions (2" width × 1 1/4" height), this precision component is designed for reliable integration with standard ACME lead screw systems in industrial and mechanical applications.