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ROCKY MOUNTAIN TWIST #8 Cobalt Threaded-Shank Drill Bit - Cobalt Threaded-Shank Drill Bits
ROCKY MOUNTAIN TWISTCobalt Threaded-Shank Drill Bits

ROCKY MOUNTAIN TWIST #8 Cobalt Threaded-Shank Drill Bit

The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #8 is a cobalt threaded-shank drill bit with a 0.1990-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and conforms to NAS 965 Type D…

SKU 3G-OTH-195630

Brand
ROCKY MOUNTAIN TWIST
Item
#8 Cobalt Threaded-Shank Drill Bit
Part Number
953CO8LS
Category
Cobalt Threaded-Shank Drill Bits
Available to Order
Also known as:953CO8LSROCKY MOUNTAIN TWIST
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Technical Specifications

ROCKY MOUNTAIN TWIST
Manufacturer Part Number
953CO8LS
Type
Black Oxide Cobalt
Overall Lg
2-1/8"

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

Product Description

The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #8 is a cobalt threaded-shank drill bit with a 0.1990-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and conforms to NAS 965 Type D standards, with an overall length of 2-1/8 inches (MPN 953CO8LS).

Frequently Asked Questions

What is the ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit #8 used for?

This cobalt threaded-shank drill bit is designed for precision drilling in aerospace and industrial applications. Its #8 size (0.1990-inch diameter) and 1/4"-28 thread allow secure mounting in tool holders, while the black oxide cobalt construction provides heat resistance and durability for tough materials.

What are the specifications of the ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit #8?

The ROCKY MOUNTAIN TWIST drill bit (MPN 953CO8LS) has a 0.1990-inch diameter, 1/4"-28 thread size, and 2-1/8" overall length. It features a black oxide cobalt finish and conforms to NAS 965 Type D standards, making it suitable for high-precision drilling in demanding environments.

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 solutions provider, we handle full logistics and customs clearance to deliver this NAS 965 Type D bit (MPN 953CO8LS) to your facility. Contact us for availability and lead time.

How to select the correct threaded shank drill bit for aerospace work?

For aerospace applications, match the thread size (e.g., 1/4"-28) to your tool holder and ensure the drill bit conforms to standards like NAS 965 Type D. The ROCKY MOUNTAIN TWIST #8 bit with 0.1990-inch diameter and black oxide cobalt finish offers the precision and durability needed for critical drilling tasks.

Used in

Common applications for ROCKY MOUNTAIN TWIST
Aerospace assembly — NAS 965 Type B compliant threaded-shank drill bits for drilling rivet holes in aluminum and titanium structures.
Automotive maintenance — #11 and #12 threaded-shank drill bits for repairing threaded holes and drilling out broken fasteners in engine blocks.
General metal fabrication — 1/4" diameter threaded-shank drill bits for creating precise holes in steel plates and profiles.
CNC machining — fractional and numbered threaded-shank drill bits mounted in quick-change tool holders for high-volume drilling.
Tool and die making — 5/32" and 7/32" threaded-shank drill bits for drilling water lines and ejector pin holes in mold bases.
Maintenance and repair — #35 and #4 threaded-shank drill bits for precision drilling in confined spaces using portable magnetic drill presses.
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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

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