Spi 14-033-5 Acme Thread Screw Checker 10 Tpi

Product Description

The SPI 14-033-5 is a steel acme thread screw checker designed to verify acme thread profiles on threaded screws and rods. It checks the 29-degree included angle characteristic of acme threads and covers a range from 1 thread per inch (TPI) up to 10 TPI. Built from steel for durability in shop and field use, this checker gives machinists and maintenance technicians a fast, reliable go/no-go reference without requiring calipers or optical comparators. It is a standard hand tool for any environment where acme-threaded components are fabricated, inspected, or replaced.

Acme thread forms are common in power transmission applications such as lead screws, vises, linear actuators, and valve stems. This checker is appropriate for use in machine shops, maintenance facilities, and industrial service environments where verifying acme thread pitch and angle on screws is a routine inspection step. It is sized for screws within the 1 to 10 TPI range, making it suitable for the most common acme thread specifications encountered in general mechanical work.

Key Features

• Verifies 29-degree included angle for acme thread profile compliance
• Covers 1 TPI to 10 TPI range for broad application coverage
• Steel construction for shop durability and dimensional stability
• Compact hand-tool format for quick bench or field inspection
• Compatible with standard acme-threaded screws and rods

Compatibility

Designed for use with acme-threaded screws covering 1 TPI to 10 TPI pitch range, as specified in the product data.

Installation Notes

This is an inspection and verification tool, not an installed component. Use it on de-energized or stationary equipment only. Clean threads before checking to ensure accurate seating of the checker against the thread form. No special tools or trade licensing are required, but standard shop safety practices apply when working near machinery.