OSG Straight Flute Tap: 5/8"-18 UNF, 2B+, 4 Flute, Plug Chamfer
The OSG Straight Flute Tap (5/8"-18 UNF) is an oversized hand tap with a 2B+ tolerance, plug chamfer, and black oxide high-speed steel construction. It features 4 flutes and is identified by manufacturer part number…
SKU 3G-OTH-272778
Need installation or engineering help?
Ask a question
Product Description
The OSG Straight Flute Tap (5/8"-18 UNF) is an oversized hand tap with a 2B+ tolerance, plug chamfer, and black oxide high-speed steel construction. It features 4 flutes and is identified by manufacturer part number 1125901.
Frequently Asked Questions
What is the OSG Straight Flute Tap 1125901 used for?
The OSG Straight Flute Tap 1125901 is used for cutting internal threads in metal components. It is ideal for through-hole or blind-hole tapping in production and maintenance applications, particularly where a slightly oversized thread is required for fit or coating allowance.
What are the specifications of the OSG Straight Flute Tap 1125901?
The OSG Straight Flute Tap has a thread size of 5/8"-18 UNF, a 2B+ tolerance class, 4 flutes, a plug chamfer, and a black oxide high-speed steel construction. The manufacturer part number is 1125901. It is designed for oversized threading applications.
Where to buy the OSG Straight Flute Tap 1125901 worldwide?
You can source the OSG Straight Flute Tap 1125901 through 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 UNF threads?
To select the correct OSG Straight Flute Tap, match the thread size (e.g., 5/8"-18 UNF) and tolerance class (e.g., 2B+) to your application. For oversized threads, use taps marked with a plus sign. Ensure the tap material (e.g., HSS) suits the workpiece hardness. Consult OSG's technical data for guidance.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG oversized hand taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















