Spi 34-655-1 Plug Thread Gage Handle Size 3 Steel

Product Description

The SPI 34-655-1 is a size 3 plug thread gage handle designed for use with plug-style thread gages in professional inspection and quality control applications. Constructed from steel, this handle provides the rigidity and durability required for repeated use in shop and production environments. It accommodates a wide range of plug thread sizes from 9/16 inch through 3/4 inch in both coarse and fine pitch series. A Certification of Inspection traceable to ANSI and NIST standards is included, supporting documented quality assurance workflows. Machinists, quality technicians, and metrology professionals use this handle as a component of their thread verification tooling.

This handle is suited for use in manufacturing, machining, and inspection environments where accurate thread verification is required. It is compatible with plug thread gages covering multiple pitch combinations in the 9/16 inch through 3/4 inch diameter range, making it a versatile option for shops working across a variety of fastener and threaded component specifications. It is appropriate for both production floor and inspection room use.

Key Features

• Handle Size 3 accommodates plug thread gage members from 9/16 to 3/4 inch diameter range
• Steel construction provides durability and consistent grip during thread inspection
• Compatible with plug thread sizes: 3/4-10, 3/4-16, 3/4-20, 5/8-11, 5/8-18, 5/8-24, 9/16-12, 9/16-18, 9/16-24
• Certification of Inspection included, traceable to ANSI and NIST standards
• Sold individually with a minimum order quantity of 1

Compatibility

Designed for use with plug thread gage members in the following thread sizes: 3/4-10, 3/4-16, 3/4-20, 5/8-11, 5/8-18, 5/8-24, 9/16-12, 9/16-18, and 9/16-24. Confirm gage member shank diameter matches the size 3 handle before assembly.

Installation Notes

Plug thread gage handles are assembled and used by quality technicians and machinists — no special tools are typically required for handle-to-gage-member assembly. Ensure the gage member is fully seated and secured in the handle before use. Do not apply excessive side-load force during thread checking, as this can affect gage accuracy and service life. Handle and gage members should be stored clean and dry to prevent corrosion and maintain calibration integrity.