ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #4, 5/8" Overall Lg, Black Oxide HSS
The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #4 is a high-speed steel threaded-shank drill bit with a 0.2090-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and conforms to NAS 965…
SKU 3G-OTH-192876
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Product Description
The ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #4 is a high-speed steel threaded-shank drill bit with a 0.2090-inch diameter and a 1/4"-28 thread size. It features a black oxide finish and conforms to NAS 965 Type B standards, with a 5/8" overall length and manufacturer part number 953HS4ST.
Frequently Asked Questions
What is the ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit #4 used for?
This drill bit is used for precision drilling in aerospace and industrial applications requiring threaded shank retention. Its NAS 965 Type B compliance and black oxide HSS construction suit it for high-strength materials where secure bit holding and chip evacuation are critical.
What are the specifications of the ROCKY MOUNTAIN TWIST 953HS4ST drill bit?
The ROCKY MOUNTAIN TWIST 953HS4ST is a #4 drill bit with a 0.2090-inch diameter, 1/4\"-28 threaded shank, and 5/8\" overall length. It features a black oxide finish on high-speed steel and meets NAS 965 Type B standards.
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 and customs clearance to deliver this NAS 965 Type B bit to your facility, regardless of location.
How to select the correct ROCKY MOUNTAIN TWIST threaded shank drill bit?
Select based on thread size (1/4\"-28 for this #4 bit), diameter (0.2090 inch), and overall length (5/8\"). Ensure the shank matches your toolholder and the black oxide HSS is suitable for the material being drilled. 3G Electric can help confirm compatibility.
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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.















