Spi CMS160726121 Screw Micrometer Anvil 64-3.5 Tpi

Product Description

The SPI CMS160726121 is a screw micrometer anvil designed for use with SPI Thread Micrometers when measuring threaded fasteners and tapped holes. The anvil features a 60-degree included angle tip and covers a pitch range of 64 TPI down to 3.5 TPI, corresponding to a measurement range of 0.40 to 0.70 millimeters. Constructed from steel with a bright finish, it provides consistent contact geometry required for accurate thread pitch measurement. Machinists, toolroom technicians, and quality control inspectors use this anvil as a direct accessory swap to extend or replace worn measuring faces on compatible thread micrometers.

This anvil is suited for inspection and production environments where precise thread measurement is required across a range of coarse and fine pitch fasteners. The 64 to 3.5 TPI range covers a wide span of standard unified and metric-equivalent thread pitches, making it a versatile replacement or spare for shops that regularly measure threaded components. The compact form factor fits into standard tool storage alongside a thread micrometer set.

Key Features

• 60-degree anvil angle for accurate thread flank contact geometry
• Pitch range: 64 TPI to 3.5 TPI (0.40 to 0.70 mm measurement range)
• Steel construction with bright finish for durability and corrosion resistance
• Designed as a direct-fit accessory for SPI Thread Micrometers
• Compact dimensions: 2 inches height, 1.2 inches width, 1 inch length
• Lightweight at 0.15 pounds for easy handling during measurement tasks

Compatibility

Designed for use with SPI Thread Micrometers as a replacement or spare anvil for thread pitch measurement applications.

Installation Notes

Installation is performed by a machinist or metrologist as part of routine thread micrometer maintenance or anvil changeover. Before swapping anvils, ensure the micrometer spindle is fully retracted and the instrument is clean and free of chips or debris. Seat the anvil firmly and verify zero calibration with a known standard before taking measurements. Follow shop metrology procedures and the micrometer manufacturer guidelines for anvil torque and seating.