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-186125
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Delivery
- Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
- Ships to
- Singapore
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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 421531.
Frequently Asked Questions
What is the APPROVED VENDOR 421531 countersink used for?
The APPROVED VENDOR 421531 is a 90° three-flute countersink used to create a conical recess for flat-head screws in metalworking and machining applications. Its carbide construction suits hardened materials, and the 1/4"-28 threaded shank allows secure mounting in toolholders for precision deburring and chamfering.
What are the specifications of the APPROVED VENDOR 421531 countersink?
The APPROVED VENDOR 421531 countersink has a 90° angle, 3 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 421531. The threaded shank enables direct attachment to compatible toolholders without a separate arbor.
Where to buy the APPROVED VENDOR 421531 countersink worldwide?
3G Electric supplies the APPROVED VENDOR 421531 countersink worldwide. As a global industrial equipment distributor established in 1990, 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 international destination.
How to select the correct countersink for a 90° flat-head screw?
Select a countersink with a 90° angle to match standard flat-head screws. The body diameter must exceed the screw head size, and the shank must fit your toolholder—the APPROVED VENDOR 421531 uses a 1/4"-28 threaded shank. Carbide is recommended for hard materials; ensure flute count matches your deburring speed requirements.
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.
