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ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 3/8", 5/8" Overall Lg - Cobalt Threaded-Shank Drill Bits
ROCKY MOUNTAIN TWISTCobalt Threaded-Shank Drill Bits

ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 3/8", 5/8" Overall Lg

The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 3/8" is a cobalt threaded-shank drill bit with a 0.3750-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and meets NAS 965 Type D…

SKU 3G-OTH-195659

Also listed as: 953CO38ST · 953CO3 8ST · 953CO3-8ST

Brand
ROCKY MOUNTAIN TWIST
Item
Threaded Shank Drill Bit: 3/8", 5/8" Overall Lg
Category
Cobalt Threaded-Shank Drill Bits
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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
953CO3/8ST
Type
Black Oxide Cobalt
Overall Lg
5/8"

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: 3/8" is a cobalt threaded-shank drill bit with a 0.3750-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 5/8" (MPN 953CO3/8ST).

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 3/8" cobalt threaded-shank drill bit is designed for precision drilling in aerospace and industrial applications. Its 1/4"-28 thread allows secure mounting in tool holders, while 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 953CO3/8ST drill bit?

The ROCKY MOUNTAIN TWIST 953CO3/8ST is a 3/8" diameter threaded-shank drill bit with a 1/4"-28 thread size, 5/8" overall length, and black oxide cobalt finish. It meets NAS 965 Type D specifications, ensuring compatibility with standard aerospace tooling systems.

Where to buy ROCKY MOUNTAIN TWIST drill bits worldwide?

3G Electric supplies ROCKY MOUNTAIN TWIST threaded-shank drill bits worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this NAS 965 Type D bit to your facility. Contact us for pricing and lead time on the 953CO3/8ST.

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 and choose a diameter like 3/8" for fastener holes. Cobalt steel with black oxide finish, as on the ROCKY MOUNTAIN TWIST 953CO3/8ST, handles high temperatures. Verify NAS 965 Type D compliance for standard aerospace tolerances.

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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