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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
Category
Cobalt Threaded-Shank Drill Bits
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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
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 — 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

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
Cobalt screw-machine length drill bit for deep hole-drilling. Features a 135° split point to reduce walking and thrust, and a fast spiral flute design for efficient chip evacuation. Straw/bronze finish provides heat resistance. Suitable for CNC and production drilling in metalworking applications
CLEVELAND
Cobalt screw-machine length drill bit for deep hole-drilling. Features a 135° split point to reduce walking and thrust, and a fast spiral flute design for efficient chip evacuation. Straw/bronze finish provides heat resistance. Suitable for CNC and production drilling in metalworking applications
Cobalt screw-machine length drill bit with TiN coating and fast spiral flute geometry for deep hole-drilling in ferrous materials. 135° split point reduces walking and improves hole accuracy. Suitable for automated machining centers and production environments requiring efficient chip evacuation
CLEVELAND
Cobalt screw-machine length drill bit with TiN coating and fast spiral flute geometry for deep hole-drilling in ferrous materials. 135° split point reduces walking and improves hole accuracy. Suitable for automated machining centers and production environments requiring efficient chip evacuation
Cobalt screw-machine length drill bit for deep hole-drilling. Features a 135° split point and fast spiral flute design for chip evacuation. Straw/bronze finish. Diameter: 0.2570 in (Letter F). Suitable for automated machining centers and CNC lathes
CLEVELAND
Cobalt screw-machine length drill bit for deep hole-drilling. Features a 135° split point and fast spiral flute design for chip evacuation. Straw/bronze finish. Diameter: 0.2570 in (Letter F). Suitable for automated machining centers and CNC lathes
This CLEVELAND screw-machine length drill bit features TiN-coated cobalt construction and a fast spiral flute design, optimized for deep hole-drilling applications. The 135° split point reduces walking and thrust, enabling precise entry in production drilling. With a Letter R size and 0.3390-inch diameter, it is suited for metalworking tasks requiring consistent performance
CLEVELAND
This CLEVELAND screw-machine length drill bit features TiN-coated cobalt construction and a fast spiral flute design, optimized for deep hole-drilling applications. The 135° split point reduces walking and thrust, enabling precise entry in production drilling. With a Letter R size and 0.3390-inch diameter, it is suited for metalworking tasks requiring consistent performance
Cobalt screw-machine length drill bit for deep hole-drilling. Features a 135° split point and fast spiral flute design for efficient chip evacuation. Straw/bronze cobalt finish provides heat resistance. Suitable for production machining of ferrous materials
CLEVELAND
Cobalt screw-machine length drill bit for deep hole-drilling. Features a 135° split point and fast spiral flute design for efficient chip evacuation. Straw/bronze cobalt finish provides heat resistance. Suitable for production machining of ferrous materials
This CLEVELAND screw-machine length drill bit is made of TiAlN-coated cobalt with a fast spiral design and a 135° split point. It is intended for deep hole-drilling applications in metalworking, particularly in automated machining centers. The 0.2570-inch diameter (Letter F) provides precise cutting in materials such as stainless steel and alloy steels
CLEVELAND
This CLEVELAND screw-machine length drill bit is made of TiAlN-coated cobalt with a fast spiral design and a 135° split point. It is intended for deep hole-drilling applications in metalworking, particularly in automated machining centers. The 0.2570-inch diameter (Letter F) provides precise cutting in materials such as stainless steel and alloy steels

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This 3/16" diameter cobalt drill bit features a 1/4-28 threaded shank and a black oxide finish. With an overall length of 1-1/4", it is designed for precision drilling in applications requiring NAS 965 Type D specifications. Suitable for use in machining and industrial settings where threaded-shank tooling is needed
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