ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 3/8", 5/8" Overall Lg
The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 3/8" is a cobalt threaded-shank drill bit with a 0.3750-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and meets NAS 965 Type D…
SKU 3G-OTH-195659
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Product Description
The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 3/8" is a cobalt threaded-shank drill bit with a 0.3750-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and meets NAS 965 Type D specifications, with an overall length of 5/8" (MPN 953CO3/8ST).
Frequently Asked Questions
What is the ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit used for?
This 3/8" cobalt threaded-shank drill bit is designed for precision drilling in aerospace and industrial applications. Its 1/4"-28 thread allows secure mounting in tool holders, while the black oxide cobalt construction provides heat resistance and durability for tough materials like stainless steel and titanium.
What are the specifications of the ROCKY MOUNTAIN TWIST 953CO3/8ST drill bit?
The ROCKY MOUNTAIN TWIST 953CO3/8ST is a 3/8" diameter threaded-shank drill bit with a 1/4"-28 thread size, 5/8" overall length, and black oxide cobalt finish. It meets NAS 965 Type D specifications, ensuring compatibility with standard aerospace tooling systems.
Where to buy ROCKY MOUNTAIN TWIST drill bits worldwide?
3G Electric supplies ROCKY MOUNTAIN TWIST threaded-shank drill bits worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this NAS 965 Type D bit to your facility. Contact us for pricing and lead time on the 953CO3/8ST.
How to select the correct threaded-shank drill bit for aerospace work?
For aerospace drilling, match the thread size (e.g., 1/4"-28) to your tool holder and choose a diameter like 3/8" for fastener holes. Cobalt steel with black oxide finish, as on the ROCKY MOUNTAIN TWIST 953CO3/8ST, handles high temperatures. Verify NAS 965 Type D compliance for standard aerospace tolerances.
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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.















