ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #20, 2-1/8" Overall Lg
The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #20 is a high-speed steel threaded-shank drill bit with a 0.1610-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and meets NAS 965 Type B…
SKU 3G-OTH-192913
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Product Description
The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #20 is a high-speed steel threaded-shank drill bit with a 0.1610-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and meets NAS 965 Type B specifications, with an overall length of 2-1/8 inches (MPN 953HS20LS).
Frequently Asked Questions
What is the ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit #20 used for?
This high-speed steel drill bit is designed for precision drilling in aerospace and industrial applications where a threaded shank is required for secure tool holding. The #20 size (0.1610 inch diameter) with 1/4"-28 thread meets NAS 965 Type B specs, making it suitable for jigs, fixtures, and maintenance work.
What are the specifications of the ROCKY MOUNTAIN TWIST 953HS20LS drill bit?
The ROCKY MOUNTAIN TWIST 953HS20LS is a #20 threaded shank drill bit with a 0.1610 inch diameter, 1/4"-28 thread size, and 2-1/8 inch overall length. It is made from black oxide high-speed steel and conforms to NAS 965 Type B standards for aerospace-grade drilling.
Where to buy ROCKY MOUNTAIN TWIST threaded shank drill bits worldwide?
3G Electric supplies ROCKY MOUNTAIN TWIST threaded shank drill bits like the 953HS20LS to customers worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver these precision bits to your facility, regardless of location.
How to select the correct threaded shank drill bit for aerospace work?
For aerospace applications, match the drill bit's thread size (e.g., 1/4"-28) to your tool holder, and verify the diameter (0.1610 inch for #20) meets your hole tolerance. Ensure the bit conforms to NAS 965 Type B specs, as the ROCKY MOUNTAIN TWIST 953HS20LS does, for reliable performance in critical assemblies.
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3G Electric supplies ROCKY MOUNTAIN TWIST high-speed steel threaded-shank drill bits. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















