OSG Straight Flute Tap: 3/8"-16 UNC, H3 / 2B-3B, 4 Flute, Plug Chamfer
The OSG Straight Flute Tap (3/8"-16 UNC) is a General Purpose Hand Tap with a Plug Chamfer, 4 flutes, and TiN Coated High Speed Steel construction, rated H3 / 2B-3B (MPN 1121305). 3G Electric interprets your demand…
SKU 3G-OTH-221604
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Product Description
The OSG Straight Flute Tap (3/8"-16 UNC) is a General Purpose Hand Tap with a Plug Chamfer, 4 flutes, and TiN Coated High Speed Steel construction, rated H3 / 2B-3B (MPN 1121305). 3G Electric interprets your demand for this OEM threading tool, sources it across 14 industrial departments, and supports your application with specialist depth in controls and pumps.
Frequently Asked Questions
What is the OSG 1121305 straight flute tap used for?
The OSG 1121305 is a general-purpose hand tap for creating internal threads in metal. Its 3/8"-16 UNC size, plug chamfer, and TiN coating suit it for through-hole and blind-hole threading in steel and alloys across machining, maintenance, and fabrication applications.
What are the specifications of the OSG 1121305 tap?
This OSG tap has a 3/8"-16 UNC thread, H3 / 2B-3B tolerance, 4 flutes, plug chamfer, and TiN-coated high-speed steel construction. The manufacturer part number is 1121305. It is designed for general-purpose hand tapping in ferrous materials.
Where to buy the OSG 1121305 tap in worldwide?
3G Electric supplies the OSG 1121305 straight flute tap to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this and other OSG threading tools.
How to select the correct tap for a 3/8"-16 UNC thread?
For a 3/8"-16 UNC thread, choose a tap with matching thread size and pitch. The OSG 1121305 with plug chamfer suits blind holes; a taper chamfer works for through holes. Ensure the tap's H3 tolerance aligns with your required thread class (2B or 3B).
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3G Electric supplies OSG general purpose hand taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















