OSG Spiral Flute Tap: 7/8"-20 UNEF, H5 / 2B-3B, 4 Flute
The OSG Spiral Flute Tap (7/8"-20 UNEF) is a spiral-flute tap for steel and stainless steel, featuring an H5 / 2B-3B tolerance with a modified bottoming chamfer and 4 flutes (MPN 1650506708). 3G Electric interprets…
SKU 3G-OTH-218953
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Product Description
The OSG Spiral Flute Tap (7/8"-20 UNEF) is a spiral-flute tap for steel and stainless steel, featuring an H5 / 2B-3B tolerance with a modified bottoming chamfer and 4 flutes (MPN 1650506708). 3G Electric interprets this demand and sources the genuine OSG product, supporting your operation across 14 industrial departments with specialist depth in cutting tools.
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 7/8"-20 UNEF used for?
This OSG spiral flute tap is designed for threading steel and stainless steel. The 7/8"-20 UNEF size with a modified bottoming chamfer and 4-flute design efficiently evacuates chips upward, making it ideal for blind-hole threading in industrial manufacturing and maintenance applications.
What are the specifications of the OSG spiral flute tap 7/8"-20 UNEF?
The OSG spiral flute tap has a thread size of 7/8"-20 UNEF, a H5 tolerance for class 2B-3B fit, 4 flutes, and a modified bottoming chamfer. The manufacturer part number is 1650506708. It is designed for threading steel and stainless steel materials.
Where to buy OSG spiral flute taps worldwide?
You can source OSG spiral flute taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this and other OSG threading tools.
How to select the right OSG spiral flute tap for steel?
Select an OSG spiral flute tap based on thread size, tolerance, and material. For steel and stainless steel, use a tap with a modified bottoming chamfer and 4 flutes, like the 7/8"-20 UNEF H5 model. Ensure the tap matches your hole type (blind or through) and desired thread class.
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3G Electric supplies OSG spiral-flute taps for steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.














