ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #29, 2-1/8" Overall Lg
The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #29 is a cobalt threaded-shank drill bit with a 0.1360-inch diameter and a 1/4"-28 thread size. It features a 2-1/8" overall length, black oxide finish, and meets…
SKU 3G-OTH-195563
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Product Description
The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #29 is a cobalt threaded-shank drill bit with a 0.1360-inch diameter and a 1/4"-28 thread size. It features a 2-1/8" overall length, black oxide finish, and meets NAS 965 Type D specifications.
Frequently Asked Questions
What is the ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit #29 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 tool holders for high-torque applications. It meets NAS 965 Type D specifications, making it suitable for aircraft maintenance and industrial machining where exact hole size and bit retention are critical.
What are the specifications of the ROCKY MOUNTAIN TWIST 953CO29LS drill bit?
The ROCKY MOUNTAIN TWIST 953CO29LS is a #29 drill bit with a 0.1360-inch diameter and a 1/4"-28 threaded shank. It has a 2-1/8" overall length, black oxide cobalt finish, and complies with NAS 965 Type D standards. The cobalt material provides heat resistance for drilling stainless steel and titanium.
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 equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on the 953CO29LS or other NAS 965 Type D bits.
How to select the correct ROCKY MOUNTAIN TWIST threaded shank drill bit?
Select based on thread size (1/4"-28 for this bit), diameter (#29 = 0.1360"), and material compatibility. Cobalt black oxide bits suit hard metals; ensure the shank matches your tool holder. For aerospace work, verify NAS 965 Type D compliance. 3G Electric can help match the bit to your application and machine specifications.
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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.















