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ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 5/16", 1-1/4" Overall Lg - Cobalt Threaded-Shank Drill Bits
ROCKY MOUNTAIN TWISTCobalt Threaded-Shank Drill Bits

ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 5/16", 1-1/4" Overall Lg

The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 5/16" is a cobalt threaded-shank drill bit with a 0.3125 inch diameter and a 1/4"-28 thread size. It features a black oxide finish and meets NAS 965 Type D…

SKU 3G-OTH-196527

Also listed as: 953CO516SS · 953CO5 16SS · 953CO5-16SS

Brand
ROCKY MOUNTAIN TWIST
Item
Threaded Shank Drill Bit: 5/16", 1-1/4" Overall Lg
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
953CO5/16SS
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: 5/16" is a cobalt threaded-shank drill bit with a 0.3125 inch diameter and a 1/4"-28 thread size. It features a black oxide finish and meets NAS 965 Type D specifications, with an overall length of 1-1/4 inches (MPN 953CO5/16SS).

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 5/16" cobalt drill bit with a 1/4"-28 threaded shank is designed for precision drilling in aerospace and industrial applications requiring NAS 965 Type D compliance. The black oxide cobalt construction provides heat resistance and durability for tough materials like stainless steel and titanium.

What are the specifications of the ROCKY MOUNTAIN TWIST 953CO5/16SS drill bit?

The ROCKY MOUNTAIN TWIST 953CO5/16SS is a 5/16" (0.3125 inch) diameter threaded shank drill bit with a 1/4"-28 thread size, 1-1/4" overall length, black oxide cobalt finish, and meets NAS 965 Type D specifications.

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 solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on the 953CO5/16SS.

How to select the correct threaded shank drill bit for aerospace work?

For aerospace drilling, match the thread size (e.g., 1/4"-28) to your tool holder, ensure the diameter (e.g., 5/16") meets hole specs, and verify material compatibility. Cobalt bits with black oxide finish, like the ROCKY MOUNTAIN TWIST 953CO5/16SS, suit high-strength alloys. Always confirm NAS 965 Type D compliance.

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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Cross-referenced by specification & description
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)
ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 5/32", 1-1/4" Overall Lg, Black Oxide Cobalt (MPN 953CO5/32SS)
ROCKY MOUNTAIN TWIST
ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 5/32", 1-1/4" Overall Lg, Black Oxide Cobalt (MPN 953CO5/32SS)
Cobalt threaded-shank drill bit with 0.3125" diameter, 1/4"-28 thread size, and 5/8" overall length. Black oxide finish. Conforms to NAS 965 Type D. Used for precision drilling in applications requiring secure retention in tool holders, such as in aerospace and industrial machining of high-strength materials
ROCKY MOUNTAIN TWIST
Cobalt threaded-shank drill bit with 0.3125" diameter, 1/4"-28 thread size, and 5/8" overall length. Black oxide finish. Conforms to NAS 965 Type D. Used for precision drilling in applications requiring secure retention in tool holders, such as in aerospace and industrial machining of high-strength materials
This cobalt threaded-shank drill bit has a 0.2500-inch diameter and a 1/4-28 thread size for secure mounting in tool holders. The black oxide finish provides lubricity and corrosion resistance. With an overall length of 1-1/4 inches, it meets NAS 965 Type D specifications. Used for drilling precision holes in hard metals and aerospace-grade materials in industrial machining and maintenance applications
ROCKY MOUNTAIN TWIST
This cobalt threaded-shank drill bit has a 0.2500-inch diameter and a 1/4-28 thread size for secure mounting in tool holders. The black oxide finish provides lubricity and corrosion resistance. With an overall length of 1-1/4 inches, it meets NAS 965 Type D specifications. Used for drilling precision holes in hard metals and aerospace-grade materials in industrial machining and maintenance applications
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
This cobalt threaded-shank drill bit has a 0.2500" diameter and 1/4"-28 thread size. The black oxide finish reduces friction during drilling. Overall length is 13/32". It meets NAS 965 Type D specifications for use in precision drilling applications
ROCKY MOUNTAIN TWIST
This cobalt threaded-shank drill bit has a 0.2500" diameter and 1/4"-28 thread size. The black oxide finish reduces friction during drilling. Overall length is 13/32". It meets NAS 965 Type D specifications for use in precision drilling applications

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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 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
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
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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
Cobalt threaded-shank drill bit with a #35 wire gauge diameter (0.1100 inches) and 1/4-28 thread size. Black oxide finish provides surface hardness and lubricity. Overall length of 1/2 inch. Conforms to NAS 965 Type D. Used for precision drilling in tool holders requiring threaded shank retention
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Cobalt threaded-shank drill bit with a #35 wire gauge diameter (0.1100 inches) and 1/4-28 thread size. Black oxide finish provides surface hardness and lubricity. Overall length of 1/2 inch. Conforms to NAS 965 Type D. Used for precision drilling in tool holders requiring threaded shank retention
Cobalt threaded-shank drill bit with 0.2570-inch diameter, 1/4"-28 thread size, and 1-1/4" overall length. Black oxide finish. Meets NAS 965 Type D specifications. Used for precision drilling in applications requiring secure tool holding via threaded shank
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Cobalt threaded-shank drill bit with 0.2570-inch diameter, 1/4"-28 thread size, and 1-1/4" overall length. Black oxide finish. Meets NAS 965 Type D specifications. Used for precision drilling in applications requiring secure tool holding via threaded shank