OEM Countersink: 90°
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-186093
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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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 421538.
Frequently Asked Questions
What is the APPROVED VENDOR Countersink 421538 used for?
This 90° countersink creates a conical recess in metal or composite materials to allow a screw head to sit flush with the surface. It is commonly used in machining, tool-and-die, and assembly operations where precise chamfering and deburring of pre-drilled holes is required.
What are the specifications of the APPROVED VENDOR Countersink 421538?
The APPROVED VENDOR Countersink 421538 has a 90° angle, 3 flutes, a 1/2 in body diameter, and a 1/4"-28 threaded shank. It is made of carbide. The manufacturer part number is 421538. These specs ensure compatibility with standard thread-shank holders and consistent countersinking performance.
Where to buy the APPROVED VENDOR Countersink 421538 worldwide?
3G Electric supplies the APPROVED VENDOR Countersink 421538 to customers worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your facility. Contact our team to place an order or request a quote for this carbide threaded-shank countersink.
How to select the correct countersink for a machining application?
Select a countersink based on the required angle (e.g., 90° for standard flat-head screws), body diameter to match the screw head size, and shank type for your tool holder. The APPROVED VENDOR 421538 uses a 1/4"-28 threaded shank. Carbide construction offers durability for hard materials. Always verify shank thread compatibility with your machine.
OEM Products
3G Electric supplies OEM threaded-shank three-flute countersinks. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
