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OSG Spiral Point Tap: 5/16"-18 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer - General Purpose Spiral-Point Taps
OSGGeneral Purpose Spiral-Point Taps

OSG Spiral Point Tap: 5/16"-18 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer

The OSG Spiral Point Tap (5/16"-18 UNC, MPN 1225805) is a general-purpose tap with a plug chamfer, TiN-coated high-speed steel construction, and 2 flutes. It is rated H2 / 2B-3B for thread class compatibility. 3G…

SKU 3G-OTH-215117

Brand
OSG
Item
Spiral Point Tap: 5/16"-18 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer
Category
General Purpose Spiral-Point Taps
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

OSG
Manufacturer Part Number
1225805
Type
H2 / 2B-3B, Plug Chamfer, TiN Coated High Speed Steel
Flute
2

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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Point Tap (5/16"-18 UNC, MPN 1225805) is a general-purpose tap with a plug chamfer, TiN-coated high-speed steel construction, and 2 flutes. It is rated H2 / 2B-3B for thread class compatibility. 3G Electric interprets demand and sources this genuine industrial cutting tool across 14 departments, with specialist depth in combustion, pumps, and controls as an authorized distributor.

Frequently Asked Questions

What is the OSG spiral point tap 5/16-18 UNC used for?

This OSG spiral point tap is designed for through-hole threading in steel and cast iron. Its 2-flute design pushes chips forward, reducing clogging. The TiN coating extends tool life. It is commonly used in automotive, aerospace, and general machining applications.

What are the specifications of the OSG tap MPN 1225805?

The OSG tap MPN 1225805 is a 5/16-18 UNC spiral point tap with a plug chamfer, 2 flutes, and TiN coated high speed steel. It has a thread class of H2 / 2B-3B. This general purpose tap is suitable for through-hole threading in ferrous materials.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps worldwide. We handle full logistics, customs clearance, and delivery to your facility. As a global industrial solutions provider, we source genuine OSG cutting tools like the 1225805 spiral point tap and support your procurement from order to arrival.

How to select the correct OSG tap for a threading application?

Select an OSG tap based on material, hole type (through or blind), and thread class. For through holes in steel, a spiral point tap like the 5/16-18 UNC with TiN coating works well. Match the tap's H limit (e.g., H2) to your required thread class (2B-3B) for proper fit.

Used in

Common applications for OSG
Automotive engine block production — OSG micro drill bits for oil gallery and coolant passage drilling in cast iron
Medical device manufacturing — OSG micro drill bits for drilling bone screw pilot holes in stainless steel implants
Aerospace component machining — OSG micro drill bits for fastener holes in titanium alloy structural parts
Mold and die making — OSG micro drill bits for cooling channel drilling in hardened tool steel (HRC 45-50)
Electronics enclosure fabrication — OSG micro drill bits for precision holes in aluminum alloy housings (with appropriate coating selection)
General engineering job shops — OSG micro drill bits for small-diameter hole drilling in mild steel and alloy steel parts

OSG Products

3G Electric supplies OSG general purpose spiral-point taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
OSG Spiral Point Tap: 5/16"-18 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer, TiCN Coated High Speed Steel (MPN 1225808)
OSG
OSG Spiral Point Tap: 5/16"-18 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer, TiCN Coated High Speed Steel (MPN 1225808)
OSG Spiral Point Tap: 5/16"-18 UNC, H1 / 2B-3B, 2 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1220805)
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OSG Spiral Point Tap: 5/16"-18 UNC, H1 / 2B-3B, 2 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1220805)
OSG Spiral Point Tap: 5/16"-18 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 1225800)
OSG
OSG Spiral Point Tap: 5/16"-18 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 1225800)
OSG Spiral Point Tap: 5/16"-18 UNC, H1 / 2B-3B, 2 Flute, Plug Chamfer, TiCN Coated High Speed Steel (MPN 1220808)
OSG
OSG Spiral Point Tap: 5/16"-18 UNC, H1 / 2B-3B, 2 Flute, Plug Chamfer, TiCN Coated High Speed Steel (MPN 1220808)
OSG Spiral Point Tap: 1/4"-20 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer, TiCN Coated High Speed Steel (MPN 1225008)
OSG
OSG Spiral Point Tap: 1/4"-20 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer, TiCN Coated High Speed Steel (MPN 1225008)
OSG Spiral Point Tap: 1/4"-28 UNF, H2 / 2B-3B, 3 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1225605)
OSG
OSG Spiral Point Tap: 1/4"-28 UNF, H2 / 2B-3B, 3 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1225605)

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OSG Spiral Point Tap: #3-48 UNC, 2B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 2884500)
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