OSG SPIRAL FLUTE Tap: 1/4"-28 UNF, H4 / 2B-3B, 3 Flute, Modified Bottoming Chamfer
The OSG SPIRAL FLUTE Tap (1/4"-28 UNF) is a carbide coolant-through spiral-flute tap for aluminum, featuring a modified bottoming chamfer, H4 / 2B-3B tolerance, and 3 flutes (MPN 1660500200). 3G Electric interprets…
SKU 3G-OTH-211197
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Product Description
The OSG SPIRAL FLUTE Tap (1/4"-28 UNF) is a carbide coolant-through spiral-flute tap for aluminum, featuring a modified bottoming chamfer, H4 / 2B-3B tolerance, and 3 flutes (MPN 1660500200). 3G Electric interprets demand and delivers this genuine industrial tool across 14 departments — with specialist depth in combustion, pumps, and controls as an authorised distributor — ensuring the right answer, not just a catalog.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
Frequently Asked Questions
What is the OSG SPIRAL FLUTE tap used for?
This OSG SPIRAL FLUTE tap is designed for threading aluminum and non-ferrous materials. Its spiral-flute geometry and modified bottoming chamfer efficiently evacuate chips, making it ideal for through-hole and blind-hole tapping in automotive, aerospace, and general manufacturing applications.
What are the specifications of the OSG SPIRAL FLUTE tap?
This tap has a 1/4"-28 UNF thread size, H4 / 2B-3B tolerance, 3 flutes, a modified bottoming chamfer, and is made of carbide. It is a coolant-through spiral-flute tap for aluminum, with manufacturer part number 1660500200. OSG is the OEM brand.
Where to buy the OSG SPIRAL FLUTE tap worldwide?
3G Electric supplies the OSG SPIRAL FLUTE tap worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time; we source and deliver this precision threading tool to any country.
How to select the correct OSG SPIRAL FLUTE tap for aluminum?
Select based on thread size, tolerance class, and material. This 1/4"-28 UNF tap with H4 / 2B-3B tolerance suits aluminum. Use coolant-through taps for deeper holes to improve chip evacuation and tool life. Always match the chamfer type (modified bottoming) to your hole configuration.
Used in
Common applications for OSG SPIRAL FLUTEOSG SPIRAL FLUTE Products
3G Electric supplies OSG SPIRAL FLUTE coolant-through spiral-flute taps for aluminum. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.






