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ROCKY MOUNTAIN TWIST 953CO1/4SS Cobalt Threaded-Shank Drill Bit - Cobalt Threaded-Shank Drill Bits
ROCKY MOUNTAIN TWISTCobalt Threaded-Shank Drill Bits

ROCKY MOUNTAIN TWIST 953CO1/4SS Cobalt Threaded-Shank Drill Bit

The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 1/4" is a cobalt threaded-shank drill bit with a 0.2500-inch diameter and a 1/4"-28 thread size. It features a black oxide finish, meets NAS 965 Type D…

SKU 3G-OTH-196525

Also listed as: 953CO14SS · 953CO1 4SS · 953CO1-4SS

Brand
ROCKY MOUNTAIN TWIST
Item
953CO1/4SS Cobalt Threaded-Shank Drill Bit
Part Number
953CO1/4SS
Category
Cobalt Threaded-Shank Drill Bits
Available to Order
Also known as:953CO1/4SSROCKY MOUNTAIN TWIST
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.

Technical Specifications

ROCKY MOUNTAIN TWIST
Manufacturer Part Number
953CO1/4SS
Type
Black Oxide Cobalt
Overall Lg
1-1/4"

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: 1/4" is a cobalt threaded-shank drill bit with a 0.2500-inch diameter and a 1/4"-28 thread size. It features a black oxide finish, meets NAS 965 Type D specifications, and has an overall length of 1-1/4 inches (MPN 953CO1/4SS).

Frequently Asked Questions

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

This cobalt drill bit is designed for drilling precision holes in hard metals and aerospace-grade materials. Its threaded shank (1/4"-28) allows secure mounting in tool holders, making it ideal for industrial machining, maintenance, and repair applications where NAS 965 Type D compliance is required.

What are the specifications of the ROCKY MOUNTAIN TWIST 953CO1/4SS drill bit?

The bit has a 0.2500-inch diameter, 1/4"-28 threaded shank, and 1-1/4" overall length. It features a black oxide cobalt finish and meets NAS 965 Type D standards. The manufacturer part number is 953CO1/4SS. These specs ensure compatibility with precision 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 distributor since 1990, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on the 953CO1/4SS or other cobalt drill bits.

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

Match the bit's diameter (0.2500") and thread size (1/4"-28) to your tool holder. Confirm the overall length (1-1/4") fits your application. For hard materials, the black oxide cobalt finish provides heat resistance. Always verify NAS 965 Type D compliance if required by your quality standards.

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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