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 Flute Tap: 5/16"-24 UNF, H3 / 2B-3B, 3 Flute, Bottoming Chamfer - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

OSG Spiral Flute Tap: 5/16"-24 UNF, H3 / 2B-3B, 3 Flute, Bottoming Chamfer

The OSG Spiral Flute Tap (5/16"-24 UNF) is a general-purpose tap with a bottoming chamfer, 3 flutes, and H3 / 2B-3B tolerance, made from high-speed steel (MPN 1430700). 3G Electric interprets demand and sources this…

SKU 3G-OTH-230789

Brand
OSG
Item
Spiral Flute Tap: 5/16"-24 UNF, H3 / 2B-3B, 3 Flute, Bottoming Chamfer
Category
General Purpose Spiral-Flute 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
1430700
Type
H3 / 2B-3B, Bottoming Chamfer, 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

Product Description

The OSG Spiral Flute Tap (5/16"-24 UNF) is a general-purpose tap with a bottoming chamfer, 3 flutes, and H3 / 2B-3B tolerance, made from high-speed steel (MPN 1430700). 3G Electric interprets demand and sources this genuine industrial tool across 14 departments, with specialist depth in cutting tools and controls.

Frequently Asked Questions

What is the OSG spiral flute tap 5/16-24 UNF used for?

This OSG spiral flute tap is used for threading blind holes in materials such as steel and aluminum. Its spiral flute design pulls chips upward, preventing clogging. The bottoming chamfer allows threading close to the hole bottom, making it ideal for general-purpose tapping in manufacturing and maintenance applications.

What are the specifications of the OSG spiral flute tap 5/16-24 UNF?

This OSG tap has a 5/16-24 UNF thread size, H3 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. It is made of high-speed steel. The manufacturer part number is 1430700. These specs ensure precise threading for unified fine threads in blind holes.

Where to buy OSG spiral flute tap 5/16-24 UNF worldwide?

You can source the OSG spiral flute tap 5/16-24 UNF worldwide through 3G Electric. We handle full logistics, customs clearance, and delivery to your location. As a global industrial distributor, we provide this tap and other OSG tooling to procurement teams and engineers anywhere.

How to select the correct OSG spiral flute tap for blind holes?

For blind holes, choose a spiral flute tap with a bottoming chamfer, like this OSG 5/16-24 UNF model. The spiral flutes evacuate chips upward, preventing breakage. Ensure the tap tolerance (H3 / 2B-3B) matches your thread class. Use proper cutting fluid and speed for the workpiece material.

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-flute 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 Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 1430500). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 1430500). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer (MPN 1430501). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer (MPN 1430501). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: #6-32 UNC, H3 / 2B-3B, 2 Flute, Bottoming Chamfer, High Speed Steel (MPN 1412500). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: #6-32 UNC, H3 / 2B-3B, 2 Flute, Bottoming Chamfer, High Speed Steel (MPN 1412500). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: #10-32 UNF, H3 / 2B-3B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 1413500). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: #10-32 UNF, H3 / 2B-3B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 1413500). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: 1/4"-20 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 1430100). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: 1/4"-20 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 1430100). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: #10-24 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 1413300). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: #10-24 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 1413300). Key specifications — attr1299826: H3 / 2B-3B.

More from OSG

View all OSG parts →
OSG Spiral Flute Tap: 7/16"-20 UNF, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2942200)
OSG
OSG Spiral Flute Tap: 7/16"-20 UNF, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2942200)
OSG Spiral Flute Tap: #12-28 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2923808). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: #12-28 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2923808). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: 5/16"-24 UNF, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2926401). Key specifications — attr1299826: H2 / 2B-3B.
OSG
OSG Spiral Flute Tap: 5/16"-24 UNF, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2926401). Key specifications — attr1299826: H2 / 2B-3B.
OSG Spiral Flute Tap: 1/4"-20 UNC, H5 / 2B-3B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 5003500)
OSG
OSG Spiral Flute Tap: 1/4"-20 UNC, H5 / 2B-3B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 5003500)
OSG Spiral Flute Tap: 5/16"-24 UNF, H6 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2941300). Key specifications — attr1299826: H6 / 2B-3B.
OSG
OSG Spiral Flute Tap: 5/16"-24 UNF, H6 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2941300). Key specifications — attr1299826: H6 / 2B-3B.
OSG Spiral Flute Tap: 5/16"-24 UNF, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2926400). Key specifications — attr1299826: H2 / 2B-3B.
OSG
OSG Spiral Flute Tap: 5/16"-24 UNF, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2926400). Key specifications — attr1299826: H2 / 2B-3B.
OSG Spiral Flute Tap: #10-32 UNF, 2B, 3 Flute, Bottoming Chamfer, TiN Coated High Speed Steel (MPN 2985505)
OSG
OSG Spiral Flute Tap: #10-32 UNF, 2B, 3 Flute, Bottoming Chamfer, TiN Coated High Speed Steel (MPN 2985505)
OSG Spiral Flute Tap: 5/16"-18 UNC, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2930601). Key specifications — attr1299826: H2 / 2B-3B.
OSG
OSG Spiral Flute Tap: 5/16"-18 UNC, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2930601). Key specifications — attr1299826: H2 / 2B-3B.