OSG Straight Flute Tap: #4-40 UNC, H2 / 2B-3B, 3 Flute, Plug Chamfer, Cobalt (MPN 1745000)
SKU 3G-OTH-265676
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Frequently Asked Questions
What is the OSG Straight Flute Tap #4-40 UNC used for?
The OSG Straight Flute Tap #4-40 UNC is designed for threading holes in mold and tool steels. Its cobalt construction and plug chamfer make it suitable for general-purpose hand tapping in hardened materials up to 45 HRC, common in die and mold manufacturing.
What are the specifications of the OSG Straight Flute Tap #4-40 UNC?
This tap has a #4-40 UNC thread size, H2 tolerance for 2B-3B class fit, 3 flutes, and a plug chamfer. It is made from cobalt high-speed steel (MPN 1745000). OSG is the OEM brand. 3G Electric supplies this tap for worldwide delivery.
Where to buy the OSG Straight Flute Tap #4-40 UNC worldwide?
You can source the OSG Straight Flute Tap #4-40 UNC (MPN 1745000) from 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.
How to select the correct OSG Straight Flute Tap for mold steel?
For mold and tool steels, choose a tap with cobalt HSS for heat resistance and a plug chamfer for through-hole or blind-hole threading. The #4-40 UNC size matches the required thread. OSG taps are precision-ground; ensure the tap drill size matches the UNC specification for proper thread engagement.
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Common applications for OSGOSG Products
3G Electric supplies OSG hand taps for mold & tool steels. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
