Made of steel hardened to Rc 58-62 and ground in matched pairs on four sides, for use where extra precision is required. Matched in size on width and height to tolerance of ±0.0002 inch on 6-, 8- and 12-inch lengths, and 0.0003 inch for larger lengths. Total parallelism, straightness over the full length and size tolerance between pieces of a matched pair are 0.0001 inch on 6- and 8-inch lengths; 0.0002 inch on 12-inch lengths; and 0.0003 inch on longer sizes. Adjacent ground sides are square with each other within 0.0004 inch, except the 6 x 1/4\" x 3/4\", 6\" x 1/4\" x 3/8\", and 6\" x 1/4\" x 1/2\" sizes, square within 0.0005 inch.
Shipping Notes: This item\'s weight exceeds the UPS shipping standard; therefore there will be UPS surcharges added to the estimate you have received. Expect a follow-up call and/or email from us with adjusted shipping charges for your approval prior to this order being processed and shipped.
Warning:This product may expose you to chemicals including Nickel, Chromium, or Lead, chemicals known to the State of California to cause Birth Defects and/or Cancer. For more information go to www.P65Warnings.ca.gov