ROCKY MOUNTAIN TWIST #21 High-Speed Steel Threaded-Shank Drill Bit
The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #21 is a high-speed steel threaded-shank drill bit with a 0.1590-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and conforms to NAS 965…
SKU 3G-OTH-192828
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
Need installation or engineering help?
Ask a question
Product Description
The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #21 is a high-speed steel threaded-shank drill bit with a 0.1590-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and conforms to NAS 965 Type B, with a 13/32" overall length (MPN 953HS21VS).
Frequently Asked Questions
What is the ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit #21 used for?
This drill bit is used for precision drilling in aerospace and industrial applications where a threaded shank is required for secure tool holding. It is designed for high-speed steel drilling in metals and composites, conforming to NAS 965 Type B standards.
What are the specifications of the ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit #21?
The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit #21 has a 0.1590-inch diameter, 1/4"-28 thread size, 13/32" overall length, and black oxide HSS finish. It meets NAS 965 Type B and carries MPN 953HS21VS.
Where to buy the ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit #21 worldwide?
3G Electric supplies the ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit #21 worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.
How to select the correct ROCKY MOUNTAIN TWIST threaded shank drill bit?
Select based on required diameter, thread size, and material. For the #21 bit, ensure a 0.1590-inch diameter and 1/4"-28 thread match your tool holder. The black oxide HSS finish suits general-purpose drilling in ferrous metals. Verify NAS 965 Type B compliance for aerospace use.
Used in
Common applications for ROCKY MOUNTAIN TWISTROCKY 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.
