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

ROCKY MOUNTAIN TWIST Cobalt Threaded-Shank Drill Bit

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-195536

Also listed as: 953 COBST · 953-COBST

Brand
ROCKY MOUNTAIN TWIST
Item
Cobalt Threaded-Shank Drill Bit
Category
Cobalt Threaded-Shank Drill Bits
Available to Order
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

ROCKY MOUNTAIN TWIST
Manufacturer Part Number
953COBST
Type
Black Oxide Cobalt
Overall Lg
9/16"

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 a 9/16" overall length (MPN 953COBST).

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

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

This cobalt threaded-shank drill bit is designed for precision drilling in aerospace and industrial applications. Its 1/4"-28 threaded shank allows secure mounting in tool holders, while the black oxide cobalt construction provides heat resistance and durability for hard metals.

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

The ROCKY MOUNTAIN TWIST 953COBST is a Letter B drill bit with a 0.2380-inch diameter, 1/4"-28 thread size, and 9/16" overall length. It features a black oxide cobalt finish and conforms to NAS 965 Type D specification for aerospace-grade tooling.

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 to source the 953COBST or other sizes for your operations.

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

Select based on thread size (e.g., 1/4"-28), diameter (0.2380 inch for Letter B), and material compatibility. Cobalt bits suit hard metals; black oxide reduces friction. Ensure the shank matches your tool holder and the bit meets NAS 965 Type D if required for aerospace work.

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
ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: Letter B, 2-1/8" Overall Lg, Black Oxide Cobalt (MPN 953COBLS)
ROCKY MOUNTAIN TWIST
ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: Letter B, 2-1/8" Overall Lg, Black Oxide Cobalt (MPN 953COBLS)
Cobalt threaded-shank drill bit with a black oxide finish. Features a Letter C size (0.2420" diameter) and 1/4"-28 threaded shank for secure tool holding. Overall length of 9/16". Suitable for precision drilling in applications requiring a threaded shank
ROCKY MOUNTAIN TWIST
Cobalt threaded-shank drill bit with a black oxide finish. Features a Letter C size (0.2420" diameter) and 1/4"-28 threaded shank for secure tool holding. Overall length of 9/16". Suitable for precision drilling in applications requiring a threaded shank
ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 5/16", 1-1/4" Overall Lg, Black Oxide Cobalt (MPN 953CO5/16SS)
ROCKY MOUNTAIN TWIST
ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 5/16", 1-1/4" Overall Lg, Black Oxide Cobalt (MPN 953CO5/16SS)
ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 1/4", 9/16" Overall Lg, Black Oxide Cobalt (MPN 953CO1/4ST)
ROCKY MOUNTAIN TWIST
ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 1/4", 9/16" Overall Lg, Black Oxide Cobalt (MPN 953CO1/4ST)
ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 3/16", 9/16" Overall Lg, Black Oxide Cobalt (MPN 953CO3/16ST)
ROCKY MOUNTAIN TWIST
ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 3/16", 9/16" Overall Lg, Black Oxide Cobalt (MPN 953CO3/16ST)

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Cobalt threaded-shank drill bit with a #10 diameter (0.1935") and 1/4"-28 thread size. Overall length is 2-1/8". Black oxide finish. Meets NAS 965 Type D specifications. Used for precision drilling in metalworking applications requiring secure tool holding
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Cobalt threaded-shank drill bit with 0.1250" diameter and 1/4"-28 thread size. Black oxide finish. Overall length 1-1/4". Meets NAS 965 Type D specifications. Used for drilling precision holes in hard metals and aerospace alloys in industrial machining and maintenance applications
Cobalt threaded-shank drill bit with #30 diameter (0.1285") and 1/4"-28 thread. Black oxide finish. Overall length 9/16". Conforms to NAS 965 Type D. Used for precision drilling in high-strength materials where secure threaded shank mounting is required
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Cobalt threaded-shank drill bit with #30 diameter (0.1285") and 1/4"-28 thread. Black oxide finish. Overall length 9/16". Conforms to NAS 965 Type D. Used for precision drilling in high-strength materials where secure threaded shank mounting is required
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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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
This #30 cobalt drill bit has a 0.1285-inch diameter and a 1/4"-28 threaded shank for secure mounting in tool holders. The black oxide finish and NAS 965 Type D compliance suit it for drilling precision holes in hard metals and aerospace alloys in industrial machining and metal fabrication applications
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This #30 cobalt drill bit has a 0.1285-inch diameter and a 1/4"-28 threaded shank for secure mounting in tool holders. The black oxide finish and NAS 965 Type D compliance suit it for drilling precision holes in hard metals and aerospace alloys in industrial machining and metal fabrication applications
Cobalt threaded-shank drill bit with a #24 wire gauge diameter of 0.1520 inches and a 1/4"-28 thread size. Overall length is 2-1/8". Black oxide cobalt construction. Meets NAS 965 Type D specifications. Used for drilling precision holes in hardened metals and aerospace alloys in CNC machining and industrial fabrication
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Cobalt threaded-shank drill bit with a #24 wire gauge diameter of 0.1520 inches and a 1/4"-28 thread size. Overall length is 2-1/8". Black oxide cobalt construction. Meets NAS 965 Type D specifications. Used for drilling precision holes in hardened metals and aerospace alloys in CNC machining and industrial fabrication
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