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ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: Letter F - Cobalt Threaded-Shank Drill Bits
ROCKY MOUNTAIN TWISTCobalt Threaded-Shank Drill Bits

ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: Letter F

The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: Letter F is a cobalt threaded-shank drill bit with a 0.2570-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and meets NAS 965 Type D…

SKU 3G-OTH-195543

Also listed as: 953 COFSS · 953-COFSS

Brand
ROCKY MOUNTAIN TWIST
Item
Threaded Shank Drill Bit: Letter F
Part Number
953COFSS
Category
Cobalt Threaded-Shank Drill Bits
Available to Order
Also known as:953COFSSROCKY 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
953COFSS
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: Letter F is a cobalt threaded-shank drill bit with a 0.2570-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and meets NAS 965 Type D specifications. This product is identified by manufacturer part number 953COFSS.

Frequently Asked Questions

What is the ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit 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 D specifications, making it suitable for high-tolerance metal drilling tasks.

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

The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit (MPN 953COFSS) has a 0.2570-inch diameter, 1/4"-28 thread size, and 1-1/4" overall length. It features a black oxide cobalt finish and meets NAS 965 Type D 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 for availability and pricing.

How to select the correct ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit?

Select based on thread size (1/4"-28), diameter (0.2570 inch), and overall length (1-1/4"). Ensure the bit meets NAS 965 Type D for aerospace-grade drilling. The black oxide cobalt finish provides heat resistance and durability for hard metals.

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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Cobalt threaded-shank drill bit with #40 wire gauge diameter (0.0980") and 1/4"-28 thread. Overall length 2-1/8", black oxide finish. Meets NAS 965 Type D. Used for precision drilling in aerospace and industrial applications requiring secure tool holding
ROCKY MOUNTAIN TWIST
Cobalt threaded-shank drill bit with #40 wire gauge diameter (0.0980") and 1/4"-28 thread. Overall length 2-1/8", black oxide finish. Meets NAS 965 Type D. Used for precision drilling in aerospace and industrial applications requiring secure tool holding
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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