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

OSG Extension Tap: 3/8"-16 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer - Spiral-Point Extension Taps
OSGSpiral-Point Extension Taps

OSG Extension Tap: 3/8"-16 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer

SKU 3G-OTH-313574

Brand
OSG
Item
Extension Tap: 3/8"-16 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer
Category
Spiral-Point Extension 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
2103801
Type
H3 / 2B-3B, Plug Chamfer, Black Oxide High Speed Steel
Flute
3
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

Frequently Asked Questions

What is OSG Extension Tap 3/8"-16 UNC used for?

This OSG extension tap is used for threading blind or deep holes in metal where a standard tap cannot reach. It is common in automotive, aerospace, and general machining applications requiring precise internal threads in steel or cast iron.

What are the specifications of OSG Extension Tap 2103801?

The OSG Extension Tap 2103801 is a 3/8"-16 UNC spiral-point tap with H3 / 2B-3B tolerance, plug chamfer, 3 flutes, and black oxide high-speed steel construction. It is designed for through-hole threading in hard-to-reach locations.

Where to buy OSG Extension Tap 2103801 worldwide?

3G Electric supplies the OSG Extension Tap 2103801 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this precision threading tool.

How to select the correct OSG extension tap for a job?

Select an OSG extension tap based on thread size (e.g., 3/8"-16 UNC), hole depth, material, and required thread class (H3 / 2B-3B). For blind holes, use a plug or bottoming chamfer; for through holes, a spiral-point design like this one works best.

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 spiral-point extension 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 Extension Tap: 3/8"-24 UNF, H3 / 2B-3B, 3 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 2104401). Key specifications — attr1315101: H3 / 2B-3B.
OSG
OSG Extension Tap: 3/8"-24 UNF, H3 / 2B-3B, 3 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 2104401). Key specifications — attr1315101: H3 / 2B-3B.
OSG Extension Tap: 5/16"-18 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 2103000). Key specifications — attr1315101: H3 / 2B-3B.
OSG
OSG Extension Tap: 5/16"-18 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 2103000). Key specifications — attr1315101: H3 / 2B-3B.
OSG Extension Tap: 5/16"-24 UNF, H3 / 2B-3B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 2103600). Key specifications — attr1315101: H3 / 2B-3B.
OSG
OSG Extension Tap: 5/16"-24 UNF, H3 / 2B-3B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 2103600). Key specifications — attr1315101: H3 / 2B-3B.
OSG Extension Tap: 1/4"-20 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1294901). Key specifications — attr1315101: H3 / 2B-3B.
OSG
OSG Extension Tap: 1/4"-20 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1294901). Key specifications — attr1315101: H3 / 2B-3B.
OSG Extension Tap: 7/16"-20 UNF, H3 / 2B-3B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 2105200). Key specifications — attr1315101: H3 / 2B-3B.
OSG
OSG Extension Tap: 7/16"-20 UNF, H3 / 2B-3B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 2105200). Key specifications — attr1315101: H3 / 2B-3B.
OSG Extension Tap: 1/4"-20 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1295001). Key specifications — attr1315101: H3 / 2B-3B.
OSG
OSG Extension Tap: 1/4"-20 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1295001). Key specifications — attr1315101: H3 / 2B-3B.

More from OSG

View all OSG parts
OSG Extension Tap: 5/16"-18 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 1295200). Key specifications — attr1315101: H3 / 2B-3B.
OSG
OSG Extension Tap: 5/16"-18 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, High Speed Steel (MPN 1295200). Key specifications — attr1315101: H3 / 2B-3B.
OSG Extension Tap: 3/8"-16 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1295301). Key specifications — attr1315101: H3 / 2B-3B.
OSG
OSG Extension Tap: 3/8"-16 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1295301). Key specifications — attr1315101: H3 / 2B-3B.
OSG Extension Tap: #10-32 UNF, H3 / 2B-3B, 2 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1294801). Key specifications — attr1315101: H3 / 2B-3B.
OSG
OSG Extension Tap: #10-32 UNF, H3 / 2B-3B, 2 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1294801). Key specifications — attr1315101: H3 / 2B-3B.
OSG Extension Tap: 1/2"-13 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1295501). Key specifications — attr1315101: H3 / 2B-3B.
OSG
OSG Extension Tap: 1/2"-13 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1295501). Key specifications — attr1315101: H3 / 2B-3B.
OSG Extension Tap: #10-24 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1294601). Key specifications — attr1315101: H3 / 2B-3B.
OSG
OSG Extension Tap: #10-24 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1294601). Key specifications — attr1315101: H3 / 2B-3B.
OSG Extension Tap: 5/16"-24 UNF, H3 / 2B-3B, 3 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1295701). Key specifications — attr1315101: H3 / 2B-3B.
OSG
OSG Extension Tap: 5/16"-24 UNF, H3 / 2B-3B, 3 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1295701). Key specifications — attr1315101: H3 / 2B-3B.
OSG Extension Tap: #6-32 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1294201). Key specifications — attr1315101: H3 / 2B-3B.
OSG
OSG Extension Tap: #6-32 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1294201). Key specifications — attr1315101: H3 / 2B-3B.
OSG Extension Tap: 7/16"-14 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1295401). Key specifications — attr1315101: H3 / 2B-3B.
OSG
OSG Extension Tap: 7/16"-14 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1295401). Key specifications — attr1315101: H3 / 2B-3B.