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APPROVED VENDOR Countersink: 90°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank - Threaded-Shank Three-Flute Countersinks
APPROVED VENDORThreaded-Shank Three-Flute Countersinks

APPROVED VENDOR Countersink: 90°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank

The APPROVED VENDOR Countersink is a threaded-shank three-flute countersink with a 90° angle, a 1/2 in body diameter, and a 1/4"-28 shank thread size. It is made of carbide and is identified by manufacturer part…

SKU 3G-OTH-186078

Brand
APPROVED VENDOR
Item
Countersink: 90°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank
Category
Threaded-Shank Three-Flute Countersinks
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
421530
Type
Carbide
Flute
3
Shank
1/4"-28
Body Dia
1/2 in
Shank Thread Size
1/4"-28
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APPROVED VENDOR Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The APPROVED VENDOR Countersink is a threaded-shank three-flute countersink with a 90° angle, a 1/2 in body diameter, and a 1/4"-28 shank thread size. It is made of carbide and is identified by manufacturer part number 421530.

Frequently Asked Questions

What is the APPROVED VENDOR 421530 countersink used for?

The APPROVED VENDOR 421530 countersink is used to create a conical recess for flat-head screws in metalworking and machining applications. Its 90° angle and three-flute design provide smooth, chatter-free cutting in materials such as steel and aluminum.

What are the specifications of the APPROVED VENDOR 421530 countersink?

The APPROVED VENDOR 421530 countersink has a 90° angle, three flutes, a 1/2 in body diameter, and a 1/4"-28 shank thread size. It is made of carbide and is identified by manufacturer part number 421530.

Where to buy the APPROVED VENDOR 421530 countersink worldwide?

3G Electric supplies the APPROVED VENDOR 421530 countersink worldwide. We handle full logistics, customs clearance, and delivery to your location. Contact us to source this threaded-shank three-flute countersink for your industrial needs.

How to select the correct countersink for a machining job?

Select a countersink based on the screw head angle (typically 90° for flat-head screws), body diameter matching the screw head size, and shank type compatible with your tool holder. The APPROVED VENDOR 421530 uses a 1/4"-28 threaded shank for secure mounting.

Used in

Common applications for APPROVED VENDOR
Laboratory sampling — APPROVED VENDOR clear wide mouth glass bottles for collecting and storing liquid samples in non-sterile environments.
Steam heating maintenance — APPROVED VENDOR forged brass radiator valves for regulating steam flow in commercial building heating systems.
High-pressure cleaning — APPROVED VENDOR turbo spray nozzles for pressure washers used in industrial equipment cleaning up to 6,000 psi.
Cleanroom operations — APPROVED VENDOR vinyl task chairs for seating in ISO 5 classified manufacturing or assembly areas.
General sealing — APPROVED VENDOR natural rubber stoppers for closing laboratory flasks or test tubes in educational or research settings.
Tamper-evident security — APPROVED VENDOR brass lead and wire seals for securing utility meters, cargo containers, or access panels.

APPROVED VENDOR Products

3G Electric supplies APPROVED VENDOR 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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APPROVED VENDOR Countersink: 90°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank, Carbide (MPN 421532). Key specifications — Shank Thread Size: 1/4"-28; Brand: APPROVED VENDOR.
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APPROVED VENDOR Countersink: 90°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank, Carbide (MPN 421532). Key specifications — Shank Thread Size: 1/4"-28; Brand: APPROVED VENDOR.
APPROVED VENDOR Countersink: 90°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank, Carbide (MPN 421537). Key specifications — Shank Thread Size: 1/4"-28; Brand: APPROVED VENDOR.
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APPROVED VENDOR Countersink: 90°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank, Carbide (MPN 421537). Key specifications — Shank Thread Size: 1/4"-28; Brand: APPROVED VENDOR.
APPROVED VENDOR Countersink: 90°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank, Carbide (MPN 421535). Key specifications — Shank Thread Size: 1/4"-28; Brand: APPROVED VENDOR.
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APPROVED VENDOR Countersink: 90°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank, Carbide (MPN 421535). 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 421551). Key specifications — Shank Thread Size: 1/4"-28; Brand: APPROVED VENDOR.
APPROVED VENDOR Countersink: 90°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank, Carbide (MPN 421536). Key specifications — Shank Thread Size: 1/4"-28; Brand: APPROVED VENDOR.
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APPROVED VENDOR Countersink: 90°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank, Carbide (MPN 421536). Key specifications — Shank Thread Size: 1/4"-28; Brand: APPROVED VENDOR.
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APPROVED VENDOR Countersink: 90°, 3 Flute, 7/16 in Body Dia, 1/4"-28 Shank, Carbide (MPN 421529). Key specifications — Shank Thread Size: 1/4"-28; Brand: APPROVED VENDOR.
APPROVED VENDOR Countersink: 130°, 3 Flute, 7/16 in Body Dia, 1/4"-28 Shank, Carbide (MPN 421571). Key specifications — Shank Thread Size: 1/4"-28; Brand: APPROVED VENDOR.
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APPROVED VENDOR Countersink: 82°, 3 Flute, 1/2 in Body Dia, 1/4"-28 Shank, Carbide (MPN 421514). Key specifications — Shank Thread Size: 1/4"-28; Brand: APPROVED VENDOR.