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ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: Letter B, 2-1/8" Overall Lg - Cobalt Threaded-Shank Drill Bits
ROCKY MOUNTAIN TWISTCobalt Threaded-Shank Drill Bits

ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: Letter B, 2-1/8" Overall Lg

The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: Letter B is a cobalt threaded-shank drill bit with a 0.2380-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-195537

Also listed as: 953 COBLS · 953-COBLS

Brand
ROCKY MOUNTAIN TWIST
Item
Threaded Shank Drill Bit: Letter B, 2-1/8" Overall Lg
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
953COBLS
Type
Black Oxide Cobalt
Overall Lg
2-1/8"

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 B is a cobalt threaded-shank drill bit with a 0.2380-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 2-1/8 inches (MPN 953COBLS).

Frequently Asked Questions

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

This drill bit is designed for precision drilling in aerospace and industrial applications where a threaded shank is required for secure tool holding. The 0.2380-inch diameter and NAS 965 Type D compliance make it suitable for high-tolerance holemaking in metal alloys.

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

The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit (MPN 953COBLS) has a 0.2380-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 specification 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 equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the 953COBLS model.

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

Select based on thread size (1/4"-28), diameter (0.2380 inches), and material compatibility. For aerospace work, ensure NAS 965 Type D compliance. The black oxide cobalt finish provides heat resistance and lubricity for drilling hardened steels. Verify overall length (2-1/8") fits your toolholder.

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
This cobalt threaded-shank drill bit features a black oxide finish and a 1/4"-28 thread for secure mounting in tool holders. With a Letter B diameter of 0.2380 inches and an overall length of 1-1/4 inches, it is suited for drilling precision holes in hard metals such as stainless steel and titanium in industrial applications. Conforms to NAS 965 Type D
ROCKY MOUNTAIN TWIST
This cobalt threaded-shank drill bit features a black oxide finish and a 1/4"-28 thread for secure mounting in tool holders. With a Letter B diameter of 0.2380 inches and an overall length of 1-1/4 inches, it is suited for drilling precision holes in hard metals such as stainless steel and titanium in industrial applications. Conforms to NAS 965 Type D
Cobalt threaded-shank drill bit with a 0.2380-inch diameter (Letter B) and 1/4"-28 thread size. Features a black oxide finish and 9/16" overall length. Conforms to NAS 965 Type D specification. Used for precision drilling in hard metals where secure mounting in tool holders is required
ROCKY MOUNTAIN TWIST
Cobalt threaded-shank drill bit with a 0.2380-inch diameter (Letter B) and 1/4"-28 thread size. Features a black oxide finish and 9/16" overall length. Conforms to NAS 965 Type D specification. Used for precision drilling in hard metals where secure mounting in tool holders is required
ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 3/8", 2-1/8" Overall Lg, Black Oxide Cobalt (MPN 953CO3/8LS)
ROCKY MOUNTAIN TWIST
ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 3/8", 2-1/8" Overall Lg, Black Oxide Cobalt (MPN 953CO3/8LS)
ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 5/16", 2-1/8" Overall Lg, Black Oxide Cobalt (MPN 953CO5/16LS)
ROCKY MOUNTAIN TWIST
ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 5/16", 2-1/8" Overall Lg, Black Oxide Cobalt (MPN 953CO5/16LS)
This cobalt threaded-shank drill bit has a 0.2500-inch diameter with a 1/4-28 thread size and 2-1/8" overall length. The black oxide finish provides enhanced surface hardness. It meets NAS 965 Type D specifications and is used for drilling precision holes in hardened materials such as stainless steel and titanium in industrial applications
ROCKY MOUNTAIN TWIST
This cobalt threaded-shank drill bit has a 0.2500-inch diameter with a 1/4-28 thread size and 2-1/8" overall length. The black oxide finish provides enhanced surface hardness. It meets NAS 965 Type D specifications and is used for drilling precision holes in hardened materials such as stainless steel and titanium in industrial applications
ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: Letter C, 2-1/8" Overall Lg, Black Oxide Cobalt (MPN 953COCLS)
ROCKY MOUNTAIN TWIST
ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: Letter C, 2-1/8" Overall Lg, Black Oxide Cobalt (MPN 953COCLS)

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