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

OSG Straight Flute Tap: 3/8"-16 UNC, H3 / 2B-3B, 4 Flute, Plug Chamfer - General Purpose Hand Taps
OSGGeneral Purpose Hand Taps

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

Brand
OSG
Item
Straight Flute Tap: 3/8"-16 UNC, H3 / 2B-3B, 4 Flute, Plug Chamfer
Category
General Purpose Hand 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
1121305
Type
H3 / 2B-3B, Plug Chamfer, TiN Coated High Speed Steel
Flute
4
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 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).

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 hand 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 Straight Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 4 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1120705)
OSG
OSG Straight Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 4 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1120705)
OSG Straight Flute Tap: 3/8"-24 UNF, H3 / 2B-3B, 4 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1121605)
OSG
OSG Straight Flute Tap: 3/8"-24 UNF, H3 / 2B-3B, 4 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1121605)
OSG Straight Flute Tap: 5/16"-24 UNF, H3 / 2B-3B, 4 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1121005)
OSG
OSG Straight Flute Tap: 5/16"-24 UNF, H3 / 2B-3B, 4 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1121005)
OSG Straight Flute Tap: 1/2"-13 UNC, H3 / 2B-3B, 4 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1122505)
OSG
OSG Straight Flute Tap: 1/2"-13 UNC, H3 / 2B-3B, 4 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1122505)
OSG Straight Flute Tap: 5/8"-18 UNF, H3 / 2B-3B, 4 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1124005)
OSG
OSG Straight Flute Tap: 5/8"-18 UNF, H3 / 2B-3B, 4 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1124005)
OSG Straight Flute Tap: 5/8"-11 UNC, H3 / 2B-3B, 4 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1123705)
OSG
OSG Straight Flute Tap: 5/8"-11 UNC, H3 / 2B-3B, 4 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1123705)

More from OSG

View all OSG parts
OSG Straight Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1170705)
OSG
OSG Straight Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1170705)
OSG Straight Flute Tap: M16x1 Metric, OH2 / 6H, 4 Flute, Plug Chamfer, High Speed Steel (MPN 1142)
OSG
OSG Straight Flute Tap: M16x1 Metric, OH2 / 6H, 4 Flute, Plug Chamfer, High Speed Steel (MPN 1142)
OSG Straight Flute Tap: 1"-14 UNS, H2 / 2B-3B, 4 Flute, Plug Chamfer, High Speed Steel (MPN 1116700)
OSG
OSG Straight Flute Tap: 1"-14 UNS, H2 / 2B-3B, 4 Flute, Plug Chamfer, High Speed Steel (MPN 1116700)
OSG Straight Flute Tap: M8x0.75 Metric, OH2 / 6H, 4 Flute, Plug Chamfer, High Speed Steel (MPN 662)
OSG
OSG Straight Flute Tap: M8x0.75 Metric, OH2 / 6H, 4 Flute, Plug Chamfer, High Speed Steel (MPN 662)
OSG Straight Flute Tap: 3/8"-24 UNF, H2 / 2B-3B, 4 Flute, Plug Chamfer, TiCN Coated High Speed Steel (MPN 1111608)
OSG
OSG Straight Flute Tap: 3/8"-24 UNF, H2 / 2B-3B, 4 Flute, Plug Chamfer, TiCN Coated High Speed Steel (MPN 1111608)
OSG Straight Flute Tap: 1/4"-20 UNC, H3 / 2B-3B, 4 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1120105)
OSG
OSG Straight Flute Tap: 1/4"-20 UNC, H3 / 2B-3B, 4 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1120105)
OSG Straight Flute Tap: #5-44 UNF, H1 / 2B-3B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 1003400)
OSG
OSG Straight Flute Tap: #5-44 UNF, H1 / 2B-3B, 3 Flute, Plug Chamfer, High Speed Steel (MPN 1003400)
OSG Straight Flute Tap: 1/2"-13 UNC, H5 / 2B-3B, 4 Flute, Plug Chamfer, TiCN Coated High Speed Steel (MPN 1142508)
OSG
OSG Straight Flute Tap: 1/2"-13 UNC, H5 / 2B-3B, 4 Flute, Plug Chamfer, TiCN Coated High Speed Steel (MPN 1142508)