Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
OSG Spiral Point Tap: 5/16"-18 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer - General Purpose Spiral-Point Taps
OSGGeneral Purpose Spiral-Point Taps

OSG Spiral Point Tap: 5/16"-18 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer

The OSG Spiral Point Tap (5/16"-18 UNC, MPN 1230805) is a general-purpose spiral-point tap with a plug chamfer, TiN-coated high-speed steel construction, and 2 flutes. It is specified as H3 / 2B-3B class of fit…

SKU 3G-OTH-216031

Brand
OSG
Item
Spiral Point Tap: 5/16"-18 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer
Category
General Purpose Spiral-Point Taps
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

OSG
Manufacturer Part Number
1230805
Type
H3 / 2B-3B, Plug Chamfer, TiN Coated High Speed Steel
Flute
2
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The OSG Spiral Point Tap (5/16"-18 UNC, MPN 1230805) is a general-purpose spiral-point tap with a plug chamfer, TiN-coated high-speed steel construction, and 2 flutes. It is specified as H3 / 2B-3B class of fit, designed for through-hole threading in a range of materials.

Frequently Asked Questions

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

OSG spiral point taps are designed for through-hole threading in production environments. The 5/16-18 UNC size with TiN coating and plug chamfer is ideal for general-purpose threading in steel, stainless steel, and cast iron, pushing chips forward to prevent clogging.

What are the specifications of OSG tap MPN 1230805?

This OSG spiral point tap has a 5/16-18 UNC thread, H3 / 2B-3B tolerance, 2 flutes, plug chamfer, and TiN coated high speed steel. It is designed for through-hole threading and is suitable for a wide range of ferrous materials.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps like the 5/16-18 UNC spiral point tap to customers worldwide. We handle full logistics, customs clearance, and delivery to your site, ensuring you get the correct threading tool for your application without hassle.

How to select the right OSG tap for through holes?

For through holes, choose a spiral point tap like this OSG 5/16-18 UNC model. The plug chamfer provides a balanced entry, while TiN coating extends tool life in steel. Ensure the H3 tolerance matches your required thread class (2B or 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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
OSG Spiral Point Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1231005). Key specifications — attr1299616: H3 / 2B-3B.
OSG
OSG Spiral Point Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1231005). Key specifications — attr1299616: H3 / 2B-3B.
OSG Spiral Point Tap: 7/16"-14 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1232005). Key specifications — attr1299616: H3 / 2B-3B.
OSG
OSG Spiral Point Tap: 7/16"-14 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1232005). Key specifications — attr1299616: H3 / 2B-3B.
OSG Spiral Point Tap: 5/8"-18 UNF, H3 / 2B-3B, 3 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1233405). Key specifications — attr1299616: H3 / 2B-3B.
OSG
OSG Spiral Point Tap: 5/8"-18 UNF, H3 / 2B-3B, 3 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1233405). Key specifications — attr1299616: H3 / 2B-3B.
OSG Spiral Point Tap: 1/4"-20 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1230205). Key specifications — attr1299616: H3 / 2B-3B.
OSG
OSG Spiral Point Tap: 1/4"-20 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1230205). Key specifications — attr1299616: H3 / 2B-3B.
OSG Spiral Point Tap: 3/8"-16 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1231605). Key specifications — attr1299616: H3 / 2B-3B.
OSG
OSG Spiral Point Tap: 3/8"-16 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1231605). Key specifications — attr1299616: H3 / 2B-3B.
OSG Spiral Point Tap: 1/4"-20 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1230005). Key specifications — attr1299616: H3 / 2B-3B.
OSG
OSG Spiral Point Tap: 1/4"-20 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1230005). Key specifications — attr1299616: H3 / 2B-3B.

More from OSG

View all OSG parts →
OSG Spiral Point Tap: #8-32 UNC, 3B, 2 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 2880305). Key specifications — attr1299616: 3B.
OSG
OSG Spiral Point Tap: #8-32 UNC, 3B, 2 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 2880305). Key specifications — attr1299616: 3B.
OSG Spiral Point Tap: #10-32 UNF, H2 / 2B-3B, 2 Flute, Plug Chamfer, TiCN Coated High Speed Steel (MPN 1208808). Key specifications — attr1299616: H2 / 2B-3B.
OSG
OSG Spiral Point Tap: #10-32 UNF, H2 / 2B-3B, 2 Flute, Plug Chamfer, TiCN Coated High Speed Steel (MPN 1208808). Key specifications — attr1299616: H2 / 2B-3B.
OSG Spiral Point Tap: #0-80 UNF, H3 / 2B-3B, 2 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1210001). Key specifications — attr1299616: H3 / 2B-3B.
OSG
OSG Spiral Point Tap: #0-80 UNF, H3 / 2B-3B, 2 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1210001). Key specifications — attr1299616: H3 / 2B-3B.
OSG Spiral Point Tap: #3-48 UNC, 2B, 2 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 2884505)
OSG
OSG Spiral Point Tap: #3-48 UNC, 2B, 2 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 2884505)
OSG Spiral Point Tap: #8-32 UNC, 3B, 2 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 2880301). Key specifications — attr1299616: 3B.
OSG
OSG Spiral Point Tap: #8-32 UNC, 3B, 2 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 2880301). Key specifications — attr1299616: 3B.
OSG Spiral Point Tap: #3-48 UNC, H5 / 2B-3B, 2 Flute, Plug Chamfer, TiCN Coated High Speed Steel (MPN 2002108)
OSG
OSG Spiral Point Tap: #3-48 UNC, H5 / 2B-3B, 2 Flute, Plug Chamfer, TiCN Coated High Speed Steel (MPN 2002108)
OSG Spiral Point Tap: #10-24 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1208405). Key specifications — attr1299616: H2 / 2B-3B.
OSG
OSG Spiral Point Tap: #10-24 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1208405). Key specifications — attr1299616: H2 / 2B-3B.
OSG Spiral Point Tap: #6-40 UNF, H5 / 2B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 2004200)
OSG
OSG Spiral Point Tap: #6-40 UNF, H5 / 2B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 2004200)