PUMP-AIR / 9U5774 - Caterpillar

- Molybdenum high speed steel- 5% Molybdenum- 4% Chromium- 2% Vanadium- 6% TungstenThis steel has good abrasion resistance similar to M-7 material but contains less Molybdenum and a higher percentage of Tungsten. It can be used for all standard drilling applications. This is a lower cost alternate to M-7 material.
In column two of Chart A, the first list of drills are standard 118° point, jobber length twist drills using M-7 high speed steel for all standard drilling applications. Drill sizes range from 1/64 inch through 1/2 inch in increments of 1/64 inch. In this category, the 1U5889 Drill Set consists of 13 bits ranging from 1/16 inch to 1/4 inch in 1/64 inch increments. Also available is 1U5714 Drill Set with 29 bits ranging from 1/16 inch to 1/2 inch drill sizes.
In column three of Chart A, the drills are 135° split point, heavy-duty jobber length twist drills using M-7 high speed steel for drilling in alloy such as bolts. These drills require less drilling effort and provide self-centering ability. Drill sizes are from 3/64 inch through 1/2 inch in increments of 1/64 inch. The 1U5892 Set is a 13 piece set with drill sizes from 1/16 inch to 1/4 inch in 1/64 inch increments. The 1U5893 Set contains 29 drills ranging from 1/16 inch to 1/2 inch in size.
In column four of Chart A, the drills are 135° split point, jobber length twist drills using M-42, 8% cobalt steel for drilling in extra tough materials like stainless steel. Drill sizes range from 1/16 inch through 1/2 inch in increments of 1/64 inch. The 1U5890 Drill Set contains 13 pieces ranging from 1/16 inch to 1/4 inch sizes in 1/64 inch increments. The 1U5891 Drill Set contains 29 pieces with drill sizes from 1/16 inch to 1/2 inch.
In column five of Chart A, the drills are standard 118° point, jobber length twist drills using M-2 steel which is specified for most standard applications. Drill sizes are from 1/32 inch through 1/2 inch in increments of 1/64 inch.
Chart B lists reduced shank, 118° point, large diameter drills using M-7 high speed steel for general purpose drilling in mild steel and cast iron. Drill sizes are from 17/32 inch through 1 1/2 inch in increments of 1/32 inch.