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, 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 1225808) is a general-purpose spiral-point tap with a plug chamfer, TiCN-coated high-speed steel construction, and H2 / 2B-3B tolerance class. It features 2 flutes and is…

SKU 3G-OTH-216331

Brand
OSG
Item
Spiral Point Tap: 5/16"-18 UNC, H2 / 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
1225808
Type
H2 / 2B-3B, Plug Chamfer, TiCN 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 1225808) is a general-purpose spiral-point tap with a plug chamfer, TiCN-coated high-speed steel construction, and H2 / 2B-3B tolerance class. It features 2 flutes and is designed for through-hole threading applications.

Frequently Asked Questions

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

The OSG spiral point tap 5/16-18 UNC is used for threading blind or through holes in ferrous and non-ferrous materials. Its TiCN coating and plug chamfer design make it suitable for general-purpose tapping in production environments where chip evacuation is critical.

What are the specifications of the OSG tap MPN 1225808?

The OSG tap MPN 1225808 is a 5/16-18 UNC spiral point tap with H2 / 2B-3B tolerance, 2 flutes, plug chamfer, and TiCN coated high speed steel. It is designed for general-purpose threading and is rated for 2B-3B class fit.

Where to buy OSG taps in worldwide?

You can source OSG taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the OSG spiral point tap MPN 1225808.

How to select the correct OSG tap for UNC threads?

To select the correct OSG tap for UNC threads, match the tap size and thread pitch to your hole requirements. For 5/16-18 UNC, use a plug chamfer for blind holes or a taper chamfer for through holes. Ensure the tap tolerance (e.g., H2 / 2B-3B) aligns with your desired thread class.

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, H2 / 2B-3B, 2 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1225805). Key specifications — attr1299616: H2 / 2B-3B.
OSG
OSG Spiral Point Tap: 5/16"-18 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1225805). Key specifications — attr1299616: H2 / 2B-3B.
OSG Spiral Point Tap: 5/16"-18 UNC, H1 / 2B-3B, 2 Flute, Plug Chamfer, TiCN Coated High Speed Steel (MPN 1220808). Key specifications — attr1299616: H1 / 2B-3B.
OSG
OSG Spiral Point Tap: 5/16"-18 UNC, H1 / 2B-3B, 2 Flute, Plug Chamfer, TiCN Coated High Speed Steel (MPN 1220808). Key specifications — attr1299616: H1 / 2B-3B.
OSG Spiral Point Tap: 5/16"-18 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 1225800). Key specifications — attr1299616: H2 / 2B-3B.
OSG
OSG Spiral Point Tap: 5/16"-18 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 1225800). Key specifications — attr1299616: H2 / 2B-3B.
OSG Spiral Point Tap: 5/16"-18 UNC, H1 / 2B-3B, 2 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1220805). Key specifications — attr1299616: H1 / 2B-3B.
OSG
OSG Spiral Point Tap: 5/16"-18 UNC, H1 / 2B-3B, 2 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1220805). Key specifications — attr1299616: H1 / 2B-3B.
OSG Spiral Point Tap: 1/4"-20 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer, TiCN Coated High Speed Steel (MPN 1225008). Key specifications — attr1299616: H2 / 2B-3B.
OSG
OSG Spiral Point Tap: 1/4"-20 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer, TiCN Coated High Speed Steel (MPN 1225008). Key specifications — attr1299616: H2 / 2B-3B.
OSG Spiral Point Tap: 3/8"-16 UNC, H2 / 2B-3B, 3 Flute, Plug Chamfer, TiCN Coated High Speed Steel (MPN 1226608). Key specifications — attr1299616: H2 / 2B-3B.
OSG
OSG Spiral Point Tap: 3/8"-16 UNC, H2 / 2B-3B, 3 Flute, Plug Chamfer, TiCN Coated High Speed Steel (MPN 1226608). Key specifications — attr1299616: H2 / 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)