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OEM Countersink: 90° - Threaded-Shank Three-Flute Countersinks
OEMThreaded-Shank Three-Flute Countersinks

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-186078

Brand
OEM
Item
Countersink: 90°
Category
Threaded-Shank Three-Flute Countersinks
Available to Order
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Technical specs
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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

Technical Specifications

OEM
Manufacturer Part Number
421530
Type
Carbide
Flute
3
Shank
1/4"-28
Body Dia
1/2 in
Shank Thread Size
1/4"-28

Technical Documents

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OEM Products
3G Electric (S) Pte. Ltd. — Singapore

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 421530.

Frequently Asked Questions

What is the APPROVED VENDOR 421530 countersink used for?

The APPROVED VENDOR 421530 countersink is used to create a conical recess for flat-head screws in metalworking and machining applications. Its 90° angle and three-flute design provide smooth, chatter-free cutting in materials such as steel and aluminum.

What are the specifications of the APPROVED VENDOR 421530 countersink?

The APPROVED VENDOR 421530 countersink has a 90° angle, three 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 421530.

Where to buy the APPROVED VENDOR 421530 countersink worldwide?

3G Electric supplies the APPROVED VENDOR 421530 countersink worldwide. We handle full logistics, customs clearance, and delivery to your location. Contact us to source this threaded-shank three-flute countersink for your industrial needs.

How to select the correct countersink for a machining job?

Select a countersink based on the screw head angle (typically 90° for flat-head screws), body diameter matching the screw head size, and shank type compatible with your tool holder. The APPROVED VENDOR 421530 uses a 1/4"-28 threaded shank for secure mounting.

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.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
APPROVED VENDOR Jobber Length Drill Bit: #59, 118° 4-Facet Point, Solid Carbide (MPN 450-300410)
APPROVED VENDOR Jobber Length Drill Bit: #59, 118° 4-Facet Point, Solid Carbide (MPN 450-300410)
APPROVED VENDOR Jobber Length Drill Bit: #58, 118° 4-Facet Point, Solid Carbide (MPN 450-300420)
APPROVED VENDOR Jobber Length Drill Bit: #58, 118° 4-Facet Point, Solid Carbide (MPN 450-300420)
APPROVED VENDOR Jobber Length Drill Bit: #57, 118° 4-Facet Point, Solid Carbide (MPN 450-300430)
APPROVED VENDOR Jobber Length Drill Bit: #57, 118° 4-Facet Point, Solid Carbide (MPN 450-300430)
APPROVED VENDOR Solid Spade Drill Bit: 11/32", 118° Point, Carbide (MPN 400-001090)
APPROVED VENDOR Solid Spade Drill Bit: 11/32", 118° Point, Carbide (MPN 400-001090)
APPROVED VENDOR Jobber Length Drill Bit: #61, 118° 4-Facet Point, Solid Carbide (MPN 450-300390)
APPROVED VENDOR Jobber Length Drill Bit: #61, 118° 4-Facet Point, Solid Carbide (MPN 450-300390)
APPROVED VENDOR Solid Spade Drill Bit: 15/32", 118° Point, Carbide (MPN 400-001130)
APPROVED VENDOR Solid Spade Drill Bit: 15/32", 118° Point, Carbide (MPN 400-001130)