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ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit - High-Speed Steel Threaded-Shank Drill Bits
ROCKY MOUNTAIN TWISTHigh-Speed Steel Threaded-Shank Drill Bits

ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit

The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: Letter F is a high-speed steel threaded-shank drill bit with a 0.2570-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and meets NAS 965…

SKU 3G-OTH-192783

Also listed as: 953 HSFSS · 953-HSFSS

Brand
ROCKY MOUNTAIN TWIST
Item
Threaded Shank Drill Bit
Category
High-Speed Steel 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
953HSFSS
Type
Black Oxide HSS
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: Letter F is a high-speed steel threaded-shank drill bit with a 0.2570-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and meets NAS 965 Type B specifications. The overall length is 1-1/4 inches, and the manufacturer part number is 953HSFSS.

Frequently Asked Questions

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

This drill bit is used for precision drilling in metalworking and aerospace applications. Its threaded shank (1/4"-28) allows secure mounting in tool holders, while the 0.2570-inch Letter F diameter and black oxide HSS construction suit high-tolerance hole making. It meets NAS 965 Type B specifications for demanding industrial tasks.

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

The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit (MPN 953HSFSS) has a 0.2570-inch diameter, 1/4"-28 thread size, and 1-1/4-inch overall length. It is made of black oxide high-speed steel and complies with NAS 965 Type B. The Letter F size is ideal for precision drilling in aerospace and metal fabrication.

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 since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us to source the 953HSFSS or other sizes. We provide reliable procurement for aerospace and manufacturing needs.

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

Select based on required hole diameter and thread compatibility. The Letter F bit (0.2570-inch) with 1/4"-28 shank fits standard tool holders. Ensure your application matches the black oxide HSS material for ferrous metals. For NAS 965 Type B compliance, verify the part number 953HSFSS. 3G Electric can assist with sizing and sourcing.

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 high-speed steel 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
ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: Letter F, 2-1/8" Overall Lg, Black Oxide HSS (MPN 953HSFLS)
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ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: Letter F, 2-1/8" Overall Lg, Black Oxide HSS (MPN 953HSFLS)
High-speed steel drill bit with a threaded shank for secure mounting in collets or chucks. Black oxide finish. Overall length 9/16 inch. Suitable for precision drilling in metalworking applications
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High-speed steel drill bit with a threaded shank for secure mounting in collets or chucks. Black oxide finish. Overall length 9/16 inch. Suitable for precision drilling in metalworking applications
ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: Letter B, 1-1/4" Overall Lg, Black Oxide HSS (MPN 953HSBSS)
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ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: Letter B, 1-1/4" Overall Lg, Black Oxide HSS (MPN 953HSBSS)
ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: Letter D, 1-1/4" Overall Lg, Black Oxide HSS (MPN 953HSDSS)
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ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: Letter D, 1-1/4" Overall Lg, Black Oxide HSS (MPN 953HSDSS)
This high-speed steel drill bit features a 1/4"-28 threaded shank for secure mounting in tool holders. The black oxide finish provides wear resistance. With a 0.2500" diameter and 2-1/8" overall length, it meets NAS 965 Type B specifications. Commonly used for precision drilling in metalworking and industrial applications
ROCKY MOUNTAIN TWIST
This high-speed steel drill bit features a 1/4"-28 threaded shank for secure mounting in tool holders. The black oxide finish provides wear resistance. With a 0.2500" diameter and 2-1/8" overall length, it meets NAS 965 Type B specifications. Commonly used for precision drilling in metalworking and industrial applications
This high-speed steel drill bit features a 1/4"-28 threaded shank for secure mounting in tool holders. The black oxide finish provides wear resistance. It is used for precision drilling in metalworking applications requiring high tolerance. Overall length is 1-1/4"
ROCKY MOUNTAIN TWIST
This high-speed steel drill bit features a 1/4"-28 threaded shank for secure mounting in tool holders. The black oxide finish provides wear resistance. It is used for precision drilling in metalworking applications requiring high tolerance. Overall length is 1-1/4"

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This #35 high-speed steel drill bit features a 1/4"-28 threaded shank and a 0.1100-inch diameter. The black oxide finish reduces friction and improves chip evacuation. With a 1/2" overall length and NAS 965 Type B compliance, it is suited for precision hole-making in metals using threaded holders
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This #35 high-speed steel drill bit features a 1/4"-28 threaded shank and a 0.1100-inch diameter. The black oxide finish reduces friction and improves chip evacuation. With a 1/2" overall length and NAS 965 Type B compliance, it is suited for precision hole-making in metals using threaded holders
This #12 high-speed steel drill bit features a 1/4"-28 threaded shank and a 0.1890-inch diameter. The black oxide finish reduces friction and aids chip evacuation. With an overall length of 1-1/4 inches, it meets NAS 965 Type B specifications for precision drilling applications
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This #12 high-speed steel drill bit features a 1/4"-28 threaded shank and a 0.1890-inch diameter. The black oxide finish reduces friction and aids chip evacuation. With an overall length of 1-1/4 inches, it meets NAS 965 Type B specifications for precision drilling applications
High-speed steel drill bit with a threaded shank for secure retention in tool holders. Features a black oxide finish for wear resistance and reduced friction. Suitable for precision drilling in metal and composite materials. Meets NAS 965 Type B specifications
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ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #6, 2-1/8" Overall Lg, Black Oxide HSS (MPN 953HS6LS)
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ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #6, 2-1/8" Overall Lg, Black Oxide HSS (MPN 953HS6LS)
This #11 high-speed steel drill bit features a 1/4"-28 threaded shank for secure retention in tool holders. With a 0.1910" diameter and 9/16" overall length, it is suited for precision drilling in ferrous metals. The black oxide finish provides resistance to wear and corrosion. Meets NAS 965 Type B standards
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This #11 high-speed steel drill bit features a 1/4"-28 threaded shank for secure retention in tool holders. With a 0.1910" diameter and 9/16" overall length, it is suited for precision drilling in ferrous metals. The black oxide finish provides resistance to wear and corrosion. Meets NAS 965 Type B standards
ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #20, 2-1/8" Overall Lg, Black Oxide HSS (MPN 953HS20LS)
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ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #20, 2-1/8" Overall Lg, Black Oxide HSS (MPN 953HS20LS)
High-speed steel drill bit with a 7/32" diameter and 1/4"-28 threaded shank for secure mounting in tool holders or collets. Black oxide finish reduces friction and improves wear resistance. Overall length of 9/16". Conforms to NAS 965 Type B specifications. Suitable for precision drilling in industrial applications requiring threaded-shank tooling
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High-speed steel threaded-shank drill bit with 1/4" diameter and 1/4"-28 thread. Black oxide finish reduces friction and improves wear resistance. Overall length 13/32". Meets NAS 965 Type B specifications. Used for precision drilling in metalworking applications where threaded shank provides secure retention