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APPROVED VENDOR Countersink: 82°, 3 Flute, 3/8 in Body Dia, 1/4"-28 Shank - Threaded-Shank Three-Flute Countersinks
APPROVED VENDORThreaded-Shank Three-Flute Countersinks

APPROVED VENDOR Countersink: 82°, 3 Flute, 3/8 in Body Dia, 1/4"-28 Shank

The APPROVED VENDOR Countersink is a threaded-shank three-flute countersink with an 82° angle, a 3/8 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-186069

Brand
APPROVED VENDOR
Item
Countersink: 82°, 3 Flute, 3/8 in Body Dia, 1/4"-28 Shank
Category
Threaded-Shank Three-Flute Countersinks
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
421503
Type
Carbide
Flute
3
Shank
1/4"-28
Body Dia
3/8 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 an 82° angle, a 3/8 in body diameter, and a 1/4"-28 shank thread size. It is made of carbide and is identified by manufacturer part number 421503.

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 APPROVED VENDOR 421503 countersink used for?

The APPROVED VENDOR 421503 countersink is used to create a conical recess for flat-head screws in metalworking and woodworking. Its 82° angle and three-flute design provide smooth, chatter-free cutting. The carbide construction suits hard materials like steel and stainless steel.

What are the specifications of the APPROVED VENDOR 421503 countersink?

The APPROVED VENDOR 421503 countersink has an 82° angle, 3/8 in body diameter, and a 1/4"-28 shank thread size. It features three flutes and is made of carbide. The manufacturer part number is 421503. This threaded-shank design allows secure mounting in compatible tool holders.

Where to buy the APPROVED VENDOR 421503 countersink worldwide?

3G Electric supplies the APPROVED VENDOR 421503 countersink worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time. We source and deliver this carbide countersink to any country.

How to select the correct countersink for a 1/4"-28 shank?

To select a countersink for a 1/4"-28 shank, ensure the shank thread size matches your tool holder. The APPROVED VENDOR 421503 has a 1/4"-28 threaded shank and a 3/8 in body diameter. Verify the countersink angle (82°) matches your screw head angle for a proper fit.

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: 82°, 3 Flute, 7/16 in Body Dia, 1/4"-28 Shank, Carbide (MPN 421506). Key specifications — Shank Thread Size: 1/4"-28; Brand: APPROVED VENDOR.
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APPROVED VENDOR Countersink: 82°, 3 Flute, 7/16 in Body Dia, 1/4"-28 Shank, Carbide (MPN 421507). Key specifications — Shank Thread Size: 1/4"-28; Brand: APPROVED VENDOR.
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APPROVED VENDOR Countersink: 82°, 3 Flute, 7/16 in Body Dia, 1/4"-28 Shank, Carbide (MPN 421507). Key specifications — Shank Thread Size: 1/4"-28; Brand: APPROVED VENDOR.
APPROVED VENDOR Countersink: 82°, 3 Flute, 7/16 in Body Dia, 1/4"-28 Shank, Carbide (MPN 421505). 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 421513). Key specifications — Shank Thread Size: 1/4"-28; Brand: APPROVED VENDOR.
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APPROVED VENDOR Countersink: 82°, 3 Flute, 3/32 in Body Dia, 1/4"-28 Shank, Carbide (MPN 421518). Key specifications — Shank Thread Size: 1/4"-28; Brand: APPROVED VENDOR.
APPROVED VENDOR Countersink: 82°, 3 Flute, 7/16 in Body Dia, 1/4"-28 Shank, Carbide (MPN 421504). Key specifications — Shank Thread Size: 1/4"-28; Brand: APPROVED VENDOR.
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APPROVED VENDOR Countersink: 82°, 3 Flute, 7/16 in Body Dia, 1/4"-28 Shank, Carbide (MPN 421504). Key specifications — Shank Thread Size: 1/4"-28; Brand: APPROVED VENDOR.
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.
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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, 7/16 in Body Dia, 1/4"-28 Shank, Carbide (MPN 421529). 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, 5/32 in Body Dia, 1/4"-28 Shank, Carbide (MPN 421520). 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.
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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.