ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #21, 2-1/8" Overall Lg
The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #21 is a cobalt threaded-shank drill bit with a 0.1590-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and conforms to NAS 965 Type D, with…
SKU 3G-OTH-195583
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Product Description
The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #21 is a cobalt threaded-shank drill bit with a 0.1590-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and conforms to NAS 965 Type D, with an overall length of 2-1/8 inches (MPN 953CO21LS).
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
Frequently Asked Questions
What is the ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit #21 used for?
This cobalt drill bit is designed for drilling precision holes in hard metals and aerospace alloys. Its threaded shank (1/4"-28) allows secure mounting in collet chucks or tool holders, making it suitable for high-torque industrial applications where bit retention is critical.
What are the specifications of the ROCKY MOUNTAIN TWIST 953CO21LS drill bit?
The bit has a #21 wire gauge diameter of 0.1590 inches, a 1/4"-28 threaded shank, and an overall length of 2-1/8 inches. It is made from cobalt steel with a black oxide finish and conforms to NAS 965 Type D. The manufacturer part number is 953CO21LS.
Where to buy ROCKY MOUNTAIN TWIST threaded shank drill bits worldwide?
3G Electric supplies ROCKY MOUNTAIN TWIST threaded shank drill bits worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on the 953CO21LS or other NAS 965 Type D bits.
How to select the correct ROCKY MOUNTAIN TWIST threaded shank drill bit?
Match the bit's diameter (0.1590 inches for #21) and thread size (1/4"-28) to your tool holder or collet. For aerospace work, ensure the bit meets NAS 965 Type D. Cobalt construction and black oxide finish provide heat resistance and chip flow for drilling hardened materials.
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3G Electric supplies ROCKY MOUNTAIN TWIST cobalt threaded-shank drill bits. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
