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 high-speed steel threaded-shank drill bit with a 0.3125-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and conforms to NAS 965…
SKU 3G-OTH-192772
Need installation or engineering help?
Ask a question
Product Description
The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: 5/16" is a high-speed steel threaded-shank drill bit with a 0.3125-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and conforms to NAS 965 Type B standards, with an overall length of 1-1/4 inches (MPN 953HS5/16SS).
Frequently Asked Questions
What is the ROCKY MOUNTAIN TWIST 5/16" threaded shank drill bit used for?
This high-speed steel drill bit is designed for precision drilling in aerospace and industrial applications where a threaded shank (1/4"-28) is required for secure mounting in tool holders. The black oxide finish reduces friction and extends tool life.
What are the specifications of the ROCKY MOUNTAIN TWIST 953HS5/16SS drill bit?
The bit has a 0.3125" (5/16") diameter, 1-1/4" overall length, 1/4"-28 threaded shank, and is made from black oxide high-speed steel. It conforms to NAS 965 Type B standards. The manufacturer part number is 953HS5/16SS.
Where to buy ROCKY MOUNTAIN TWIST threaded shank drill bits worldwide?
3G Electric supplies ROCKY MOUNTAIN TWIST drill bits to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on the 953HS5/16SS or other NAS 965 Type B tooling.
How to select the correct threaded shank drill bit for aerospace work?
Match the thread size (e.g., 1/4"-28) to your tool holder and confirm the drill diameter (0.3125") meets your hole tolerance. Ensure the bit conforms to NAS 965 Type B for aerospace compliance. ROCKY MOUNTAIN TWIST bits are a reliable choice for these applications.
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.















