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ROCKY MOUNTAIN TWIST #31 Cobalt Threaded-Shank Drill Bit - Cobalt Threaded-Shank Drill Bits
ROCKY MOUNTAIN TWISTCobalt Threaded-Shank Drill Bits

ROCKY MOUNTAIN TWIST #31 Cobalt Threaded-Shank Drill Bit

The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #31 is a cobalt threaded-shank drill bit with a 0.1200-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-195556

Brand
ROCKY MOUNTAIN TWIST
Item
#31 Cobalt Threaded-Shank Drill Bit
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
953CO31SS
Type
Black Oxide Cobalt
Overall Lg
1"

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: #31 is a cobalt threaded-shank drill bit with a 0.1200-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and conforms to NAS 965 Type D specification, with an overall length of 1 inch (MPN 953CO31SS).

Frequently Asked Questions

What is the ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit #31 used for?

This cobalt drill bit is designed for precision drilling in aerospace and industrial applications where a threaded shank is required for secure tool holding. It conforms to NAS 965 Type D specification, making it suitable for high-tolerance holemaking in hardened materials.

What are the specifications of the ROCKY MOUNTAIN TWIST 953CO31SS drill bit?

The ROCKY MOUNTAIN TWIST 953CO31SS is a #31 cobalt threaded-shank drill bit with a 0.1200-inch diameter, 1/4"-28 thread size, and 1-inch overall length. It features a black oxide finish and meets NAS 965 Type D standards for aerospace-grade drilling.

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 953CO31SS or other NAS 965 Type D bits.

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

Select based on thread size (1/4"-28 for this bit), diameter (0.1200 inch for #31), and overall length (1 inch). Ensure the shank matches your toolholder and the cobalt material suits the workpiece hardness. The black oxide finish aids chip flow and reduces friction during drilling.

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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Cobalt threaded-shank drill bit with #31 wire gauge diameter (0.1200") and 1/4"-28 thread. Black oxide finish. Overall length 2-1/8". Meets NAS 965 Type D specifications. Used for precision drilling in applications requiring secure tool holding, such as aerospace and industrial machining
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Cobalt threaded-shank drill bit with #31 wire gauge diameter (0.1200") and 1/4"-28 thread. Black oxide finish. Overall length 2-1/8". Meets NAS 965 Type D specifications. Used for precision drilling in applications requiring secure tool holding, such as aerospace and industrial machining
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This cobalt threaded-shank drill bit has a 0.0938" diameter with a 1/4"-28 thread for secure mounting in tool holders. The black oxide finish and cobalt construction suit drilling in hard materials. Overall length is 1". Conforms to NAS 965 Type D specification
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Cobalt threaded-shank drill bit with a #23 diameter of 0.1540 inches and a 1/4"-28 thread size. Overall length is 1-1/4 inches. Black oxide finish. Conforms to NAS 965 Type D. Used for precision drilling in applications requiring secure retention in tool holders, such as aerospace and industrial holemaking in hardened materials
Cobalt threaded-shank drill bit with 0.2188" diameter and 1/4-28 thread size. Black oxide finish, 2-1/8" overall length. Meets NAS 965 Type D specification. Used for drilling precision holes in hardened metals and aerospace alloys, suitable for CNC machining and maintenance applications
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