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ROCKY MOUNTAIN TWIST #20 Cobalt Threaded-Shank Drill Bit - Cobalt Threaded-Shank Drill Bits
ROCKY MOUNTAIN TWISTCobalt Threaded-Shank Drill Bits

ROCKY MOUNTAIN TWIST #20 Cobalt Threaded-Shank Drill Bit

The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #20 is a cobalt threaded-shank drill bit with a 0.1610 diameter and 1/4"-28 thread size. It features a 2-1/8" overall length, black oxide cobalt construction, and…

SKU 3G-OTH-195587

Brand
ROCKY MOUNTAIN TWIST
Item
#20 Cobalt Threaded-Shank Drill Bit
Part Number
953CO20LS
Category
Cobalt Threaded-Shank Drill Bits
Available to Order
Also known as:953CO20LSROCKY MOUNTAIN TWIST
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

ROCKY MOUNTAIN TWIST
Manufacturer Part Number
953CO20LS
Type
Black Oxide Cobalt
Overall Lg
2-1/8"

Technical Documents

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ROCKY MOUNTAIN TWIST Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #20 is a cobalt threaded-shank drill bit with a 0.1610 diameter and 1/4"-28 thread size. It features a 2-1/8" overall length, black oxide cobalt construction, and meets NAS 965 Type D specifications.

Frequently Asked Questions

What is the ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit #20 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 is designed for use with collet chucks or threaded holders, and the cobalt construction suits hard metals like stainless steel and titanium.

What are the specifications of the ROCKY MOUNTAIN TWIST 953CO20LS drill bit?

The ROCKY MOUNTAIN TWIST 953CO20LS is a #20 drill bit with a 0.1610 inch diameter, 1/4"-28 threaded shank, and 2-1/8" overall length. It is made of black oxide cobalt and meets NAS 965 Type D specifications for aerospace-grade tooling.

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 953CO20LS or other sizes.

How to select the correct ROCKY MOUNTAIN TWIST threaded shank drill bit?

Select based on thread size (1/4"-28 for this bit), diameter (0.1610 inch for #20), and overall length (2-1/8"). Ensure your tool holder matches the threaded shank. For hard materials, the black oxide cobalt construction provides heat resistance and durability. Always verify NAS 965 Type D compliance for aerospace work.

Used in

Common applications for ROCKY MOUNTAIN TWIST
Aerospace assembly — Rocky Mountain Twist NAS 965 Type D cobalt drill bits for drilling titanium airframe components
Automotive production line — Rocky Mountain Twist HSS threaded-shank drill bits for quick-change drilling in aluminum engine blocks
Heavy equipment maintenance — Rocky Mountain Twist cobalt drill bits for drilling hardened steel in field repair kits
Precision machining — Rocky Mountain Twist HSS drill bits in wire gauge sizes for jig and fixture drilling
Portable drilling operations — Rocky Mountain Twist threaded-shank drill bits for use with magnetic drill stands in structural steel fabrication
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ROCKY MOUNTAIN TWIST Products

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.

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This #40 cobalt threaded-shank drill bit has a 0.0980-inch diameter and 1/2-inch overall length. It features a 1/4"-28 thread shank for secure tool holding in precision drilling operations. The black oxide finish and NAS 965 Type D compliance suit it for high-tolerance hole-making in metals
ROCKY MOUNTAIN TWIST
This #40 cobalt threaded-shank drill bit has a 0.0980-inch diameter and 1/2-inch overall length. It features a 1/4"-28 thread shank for secure tool holding in precision drilling operations. The black oxide finish and NAS 965 Type D compliance suit it for high-tolerance hole-making in metals

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