OEM Countersink: 100°
The APPROVED VENDOR Countersink is a 100° threaded-shank three-flute countersink with 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 421556.
SKU 3G-OTH-186084
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 100° threaded-shank three-flute countersink with 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 421556.
Frequently Asked Questions
What is the APPROVED VENDOR 421556 countersink used for?
The APPROVED VENDOR 421556 is a 100° three-flute countersink used to create a conical recess for flat-head screws in metalworking and machining applications. Its carbide construction provides durability for precision chamfering and deburring on ferrous and non-ferrous materials.
What are the specifications of the APPROVED VENDOR 421556 countersink?
The APPROVED VENDOR 421556 is a 100° three-flute countersink with a 1/2 in body diameter and a 1/4"-28 threaded shank. It is made of carbide and has manufacturer part number 421556. The shank thread size is 1/4"-28, designed for use with compatible holders.
Where to buy the APPROVED VENDOR 421556 countersink worldwide?
3G Electric supplies the APPROVED VENDOR 421556 countersink to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this carbide countersink.
How to select the correct countersink for a 100° flat-head screw?
To select the correct countersink, match the included angle to your screw head—100° for metric flat-head screws. Ensure the body diameter exceeds the screw head size. The APPROVED VENDOR 421556 with a 1/2 in body and 1/4"-28 shank suits many standard applications. Verify shank compatibility with your tool holder.
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.
