OSG Thread Forming Tap: #12-28 UNF, H10, Plug Chamfer, Black Oxide Cobalt (MPN 1400125501)
SKU 3G-OTH-237319
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Frequently Asked Questions
What is OSG thread forming tap #12-28 UNF used for?
OSG thread forming taps are used to create internal threads in ductile materials like aluminum, brass, and low-carbon steel without cutting. The #12-28 UNF size is common in precision assemblies, automotive, and aerospace applications where thread strength and chip-free forming are critical.
What are the specifications of OSG 1400125501 thread forming tap?
The OSG 1400125501 is a #12-28 UNF thread forming tap with H10 tolerance, plug chamfer, and black oxide cobalt finish. It is designed for general-purpose forming in materials up to 850 °C hardness. The black oxide coating reduces friction and improves wear resistance.
Where to buy OSG thread forming taps worldwide?
3G Electric supplies OSG thread forming taps like the #12-28 UNF model 1400125501 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this and other OSG tooling.
How to select the right thread forming tap for aluminum?
For aluminum, choose a thread forming tap with a plug chamfer and black oxide or TiN coating to reduce galling. The OSG #12-28 UNF H10 tap is suitable for aluminum alloys. Ensure the tap size matches the hole diameter per UNF standards and use proper lubrication to extend tool life.
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3G Electric supplies OSG general purpose thread-forming taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















