ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #21, 9/16" Overall Lg
The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #21 is a high-speed steel threaded-shank drill bit with a 0.1590-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and meets NAS 965 Type B…
SKU 3G-OTH-192829
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Product Description
The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #21 is a high-speed steel threaded-shank drill bit with a 0.1590-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and meets NAS 965 Type B specifications, with a 9/16" overall length (MPN 953HS21ST).
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 drill bit is used for precision drilling in aerospace and industrial applications where a threaded shank is required for secure tool holding. It meets NAS 965 Type B specifications, making it suitable for high-tolerance hole-making in metal fabrication and maintenance tasks.
What are the specifications of the ROCKY MOUNTAIN TWIST 953HS21ST drill bit?
The ROCKY MOUNTAIN TWIST 953HS21ST is a #21 high-speed steel drill bit with a 0.1590-inch diameter, 1/4"-28 threaded shank, and 9/16" overall length. It has a black oxide finish and complies with NAS 965 Type B standards.
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, we handle full logistics, customs clearance, and delivery to your location. Contact us to source the 953HS21ST or other NAS 965 Type B bits.
How to select the correct ROCKY MOUNTAIN TWIST threaded shank drill bit?
Select based on thread size (e.g., 1/4"-28), diameter (0.1590 inch for #21), and overall length (9/16"). Ensure the bit meets NAS 965 Type B for aerospace-grade applications. ROCKY MOUNTAIN TWIST bits feature black oxide HSS for durability. Match shank to your toolholder.
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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.
