HFS(R) Spacer Block Set Bearing Steel in Fitted Case 36pcs ±0.0001" Accuracy, 3/4" Diameter, 1/4-28 Thread

Upgrade your precision toolkit with this 36-piece gauge block set, engineered for accuracy and durability. The set includes a wide range of sizes—from 0.050" to 1.000"—plus a hex key and four screws for secure mounting. Laser-marked for easy identification. Whether you're calibrating instruments, inspecting parts, or performing dimensional metrology, this set delivers the reliability professionals demand.

• [Complete Set]: 36pcs blocks: 9pcs ranging from 0.101" to 0.109" in 0.001" increments, 15pcs from 0.050" to 0.190" in 0.010" increments, 9pcs from 0.200" to 1.000" in 0.1000" increments, plus 1pc at 0.0625", 1pc at 0.125", and 1pc extra at 1.000". Comes with 4 screws and a hex key for secure installation.
• [Parameters]: Each block features a 3/4" diameter and 1/4 - 28 internal thread, with an accuracy of ±0.0001".
• [Durable Material]: Crafted from bearing steel, hardened to 58–60 RC for exceptional wear resistance and long-term durability.
• [Laser Marked]: Every block is laser engraved with its size for quick identification. Ground and micro-lapped measuring surfaces provide a mirror-like finish, ensuring excellent wringability and precision.
• [Versatile Applications]: Designed for calibration, inspection, and dimensional metrology in professional workshops and manufacturing facilities.