OEM Countersink: 100°
The APPROVED VENDOR Countersink: 100° is a threaded-shank three-flute countersink with a 7/16 in body diameter and a 1/4"-28 shank thread size. It is made of carbide and is identified by manufacturer part number 421551.
SKU 3G-OTH-186129
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: 100° is a threaded-shank three-flute countersink with a 7/16 in body diameter and a 1/4"-28 shank thread size. It is made of carbide and is identified by manufacturer part number 421551.
Frequently Asked Questions
What is the APPROVED VENDOR 421551 countersink used for?
The APPROVED VENDOR 421551 is a 100° three-flute countersink used to create a conical recess for flat-head screws in metalworking. Its carbide construction suits hard 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 421551 countersink?
The APPROVED VENDOR 421551 countersink has a 7/16 in body diameter, 1/4"-28 shank thread size, three flutes, and a 100° included angle. It is made of carbide and is identified by manufacturer part number 421551. This threaded-shank design provides stable, repeatable countersinking in production environments.
Where to buy the APPROVED VENDOR 421551 countersink worldwide?
3G Electric supplies the APPROVED VENDOR 421551 countersink worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this carbide three-flute countersink to your facility. Contact us for availability and lead time on this threaded-shank tool.
How to select the correct countersink for a 1/4"-28 threaded shank?
To select a countersink for a 1/4"-28 threaded shank, match the shank thread size exactly to your toolholder. The APPROVED VENDOR 421551 offers a 7/16 in body diameter and 100° angle, ideal for flat-head screws. Ensure the flute count (three) matches your material and finish requirements for chip evacuation.
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.
