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ROCKY MOUNTAIN TWIST Countersink: 100°, 3 Flute, 1/2 in Body Dia - Threaded-Shank Three-Flute Countersinks
ROCKY MOUNTAIN TWISTThreaded-Shank Three-Flute Countersinks

ROCKY MOUNTAIN TWIST Countersink: 100°, 3 Flute, 1/2 in Body Dia

The ROCKY MOUNTAIN TWIST Countersink is a threaded-shank three-flute countersink with a 100° angle, 3 flutes, and a 1/2 in body diameter. It features a 1/4"-28 shank thread size and is identified by manufacturer part…

SKU 3G-OTH-186098

Brand
ROCKY MOUNTAIN TWIST
Item
Countersink: 100°, 3 Flute, 1/2 in Body Dia
Category
Threaded-Shank Three-Flute Countersinks
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Technical Specifications

ROCKY MOUNTAIN TWIST
Manufacturer Part Number
954HS5-30
Shank Thread Size
1/4"-28
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ROCKY MOUNTAIN TWIST Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The ROCKY MOUNTAIN TWIST Countersink is a threaded-shank three-flute countersink with a 100° angle, 3 flutes, and a 1/2 in body diameter. It features a 1/4"-28 shank thread size and is identified by manufacturer part number 954HS5-30.

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 Countersink 954HS5-30 used for?

This countersink is used to create a conical recess for flat-head screws in metal or wood. Its 100° angle and three-flute design provide smooth, chatter-free cutting. It is commonly applied in aerospace, automotive, and general machining where precise countersinking is required.

What are the specifications of the ROCKY MOUNTAIN TWIST Countersink 954HS5-30?

The ROCKY MOUNTAIN TWIST Countersink has a 100° included angle, 3 flutes, a 1/2 in body diameter, and a 1/4"-28 shank thread size. The manufacturer part number is 954HS5-30. It is a threaded-shank three-flute countersink designed for use with compatible holders.

Where to buy the ROCKY MOUNTAIN TWIST Countersink 954HS5-30 worldwide?

3G Electric supplies the ROCKY MOUNTAIN TWIST Countersink 954HS5-30 to customers worldwide. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We source and deliver this precision tool globally.

How to select the correct ROCKY MOUNTAIN TWIST Countersink for your application?

Select based on screw head angle and shank compatibility. This 100° countersink matches 100° flat-head screws. Ensure your holder accepts a 1/4"-28 threaded shank. For harder materials, choose a three-flute design like the 954HS5-30 to reduce vibration and improve finish.

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 threaded-shank three-flute countersinks. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #2, 13/32" Overall Lg, Black Oxide Cobalt (MPN 953CO2VS). Key specifications — attr1235676: ROCKY MOUNTAIN TWIST; attr1235682: 1/4"-28; attr1235677: 0.2210; attr1235683: NAS 965 Type D.
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ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #2, 13/32" Overall Lg, Black Oxide Cobalt (MPN 953CO2VS). Key specifications — attr1235676: ROCKY MOUNTAIN TWIST; attr1235682: 1/4"-28; attr1235677: 0.2210; attr1235683: NAS 965 Type D.
ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #24, 9/16" Overall Lg, Black Oxide Cobalt (MPN 953CO24ST). Key specifications — attr1235676: ROCKY MOUNTAIN TWIST; attr1235682: 1/4"-28; attr1235677: 0.1520; attr1235683: NAS 965 Type D.
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ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #24, 9/16" Overall Lg, Black Oxide Cobalt (MPN 953CO24ST). Key specifications — attr1235676: ROCKY MOUNTAIN TWIST; attr1235682: 1/4"-28; attr1235677: 0.1520; attr1235683: NAS 965 Type D.
ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #21, 13/32" Overall Lg, Black Oxide Cobalt (MPN 953CO21VS). Key specifications — attr1235676: ROCKY MOUNTAIN TWIST; attr1235682: 1/4"-28; attr1235677: 0.1590; attr1235683: NAS 965 Type D.
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ROCKY MOUNTAIN TWIST Threaded Shank Drill Bit: #21, 13/32" Overall Lg, Black Oxide Cobalt (MPN 953CO21VS). Key specifications — attr1235676: ROCKY MOUNTAIN TWIST; attr1235682: 1/4"-28; attr1235677: 0.1590; attr1235683: NAS 965 Type D.
APPROVED VENDOR Countersink: 100°, 3 Flute, 7/16 in Body Dia, 1/4"-28 Shank, Carbide (MPN 421549). Key specifications — Shank Thread Size: 1/4"-28; Brand: APPROVED VENDOR.
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APPROVED VENDOR Countersink: 100°, 3 Flute, 7/16 in Body Dia, 1/4"-28 Shank, Carbide (MPN 421549). Key specifications — Shank Thread Size: 1/4"-28; Brand: APPROVED VENDOR.

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ROCKY MOUNTAIN TWIST Countersink: 100°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank, Black Oxide Cobalt (MPN 954CO5-21). Key specifications — Shank Thread Size: 1/4"-28; Brand: ROCKY MOUNTAIN TWIST.
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ROCKY MOUNTAIN TWIST Countersink: 100°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank, Black Oxide Cobalt (MPN 954CO5-21). Key specifications — Shank Thread Size: 1/4"-28; Brand: ROCKY MOUNTAIN TWIST.
ROCKY MOUNTAIN TWIST Countersink: 100°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank (MPN 954HS5-40). Key specifications — Shank Thread Size: 1/4"-28; Brand: ROCKY MOUNTAIN TWIST.
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ROCKY MOUNTAIN TWIST Countersink: 100°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank (MPN 954HS5-40). Key specifications — Shank Thread Size: 1/4"-28; Brand: ROCKY MOUNTAIN TWIST.
ROCKY MOUNTAIN TWIST Countersink: 100°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank, Black Oxide Cobalt (MPN 954CO5-10). Key specifications — Shank Thread Size: 1/4"-28; Brand: ROCKY MOUNTAIN TWIST.
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ROCKY MOUNTAIN TWIST Countersink: 100°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank, Black Oxide Cobalt (MPN 954CO5-10). Key specifications — Shank Thread Size: 1/4"-28; Brand: ROCKY MOUNTAIN TWIST.
ROCKY MOUNTAIN TWIST Countersink: 100°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank (MPN 954HS5-10). Key specifications — Shank Thread Size: 1/4"-28; Brand: ROCKY MOUNTAIN TWIST.
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ROCKY MOUNTAIN TWIST Countersink: 100°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank (MPN 954HS5-10). Key specifications — Shank Thread Size: 1/4"-28; Brand: ROCKY MOUNTAIN TWIST.
ROCKY MOUNTAIN TWIST Countersink: 100°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank, Black Oxide Cobalt (MPN 954CO5-30). Key specifications — Shank Thread Size: 1/4"-28; Brand: ROCKY MOUNTAIN TWIST.
ROCKY MOUNTAIN TWIST
ROCKY MOUNTAIN TWIST Countersink: 100°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank, Black Oxide Cobalt (MPN 954CO5-30). Key specifications — Shank Thread Size: 1/4"-28; Brand: ROCKY MOUNTAIN TWIST.
ROCKY MOUNTAIN TWIST Countersink: 100°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank, Black Oxide Cobalt (MPN 954CO5-40). Key specifications — Shank Thread Size: 1/4"-28; Brand: ROCKY MOUNTAIN TWIST.
ROCKY MOUNTAIN TWIST
ROCKY MOUNTAIN TWIST Countersink: 100°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank, Black Oxide Cobalt (MPN 954CO5-40). Key specifications — Shank Thread Size: 1/4"-28; Brand: ROCKY MOUNTAIN TWIST.
ROCKY MOUNTAIN TWIST Countersink: 100°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank (MPN 954HS5-21). Key specifications — Shank Thread Size: 1/4"-28; Brand: ROCKY MOUNTAIN TWIST.
ROCKY MOUNTAIN TWIST
ROCKY MOUNTAIN TWIST Countersink: 100°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank (MPN 954HS5-21). Key specifications — Shank Thread Size: 1/4"-28; Brand: ROCKY MOUNTAIN TWIST.