We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

OSG Spiral Flute Tap: 9/16"-12 UNC, H3 / 2B-3B, 3 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 9/16"-12 UNC, H3 / 2B-3B, 3 Flute

The OSG Spiral Flute Tap (9/16"-12 UNC, MPN 1650503708) is a spiral-flute tap for steel and stainless steel, featuring an H3 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. 3G Electric sources this…

SKU 3G-OTH-218564

Brand
OSG
Item
Spiral Flute Tap: 9/16"-12 UNC, H3 / 2B-3B, 3 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
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

Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

OSG
Manufacturer Part Number
1650503708
Type
H3 / 2B-3B, Modified Bottoming Chamfer
Flute
3

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 (9/16"-12 UNC, MPN 1650503708) is a spiral-flute tap for steel and stainless steel, featuring an H3 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. 3G Electric sources this genuine OSG tool as part of our industrial supply across 14 departments, with specialist depth in cutting tools and machining.

Frequently Asked Questions

What is an OSG spiral flute tap used for?

An OSG spiral flute tap is used for threading blind holes in steel and stainless steel. Its spiral design pushes chips upward, preventing clogging and ensuring clean threads. This 9/16"-12 UNC tap with a modified bottoming chamfer is ideal for applications requiring threads close to the hole bottom.

What are the specifications of the OSG 9/16"-12 UNC spiral flute tap?

This OSG tap has a 9/16"-12 UNC thread size, H3 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. It is designed for threading steel and stainless steel. The manufacturer part number is 1650503708.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps worldwide. We handle full logistics and customs clearance to deliver this 9/16"-12 UNC spiral flute tap to your facility. Contact us for a quote and lead time on this and other OSG threading tools.

How to select the right spiral flute tap for steel?

Select a spiral flute tap based on thread size, pitch, and material. For steel and stainless steel, use a tap with H3 tolerance and a modified bottoming chamfer for blind holes. This OSG 9/16"-12 UNC tap is designed for such applications, ensuring chip evacuation and thread accuracy.

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-flute taps for steel & stainless steel. 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

Compatible alternatives & equivalents

Cross-referenced by specification & description
OSG Spiral Flute Tap: 7/16"-20 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1650503108)
OSG
OSG Spiral Flute Tap: 7/16"-20 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1650503108)
OSG Spiral Flute Tap: 9/16"-18 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1650503908)
OSG
OSG Spiral Flute Tap: 9/16"-18 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1650503908)
OSG Spiral Flute Tap: 1/2"-13 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1650503308)
OSG
OSG Spiral Flute Tap: 1/2"-13 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1650503308)
OSG Spiral Flute Tap: 9/16"-12 UNC, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1650503608)
OSG
OSG Spiral Flute Tap: 9/16"-12 UNC, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1650503608)
OSG Spiral Flute Tap: 1"-12 UNF, H6 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 1650505408)
OSG
OSG Spiral Flute Tap: 1"-12 UNF, H6 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 1650505408)
OSG Spiral Flute Tap: 7/8"-9 UNC, H4 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 1650504908)
OSG
OSG Spiral Flute Tap: 7/8"-9 UNC, H4 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 1650504908)

More from OSG

View all OSG parts
OSG Spiral Flute Tap: 9/16"-18 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1762301)
OSG
OSG Spiral Flute Tap: 9/16"-18 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1762301)
OSG Spiral Flute Tap: #4-40 UNC, H3 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1754108)
OSG
OSG Spiral Flute Tap: #4-40 UNC, H3 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1754108)
OSG Spiral Flute Tap: 7/16"-28 UNEF, H4 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1650506008)
OSG
OSG Spiral Flute Tap: 7/16"-28 UNEF, H4 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1650506008)
OSG Spiral Flute Tap: #12-24 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer (MPN 0137008)
OSG
OSG Spiral Flute Tap: #12-24 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer (MPN 0137008)
OSG Spiral Flute Tap: 1/2"-13 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1733405)
OSG
OSG Spiral Flute Tap: 1/2"-13 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1733405)
OSG Spiral Flute Tap: 7/8"-14 UNF, H4 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 0140001)
OSG
OSG Spiral Flute Tap: 7/8"-14 UNF, H4 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 0140001)
OSG Spiral Flute Tap: #10-32 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1752508)
OSG
OSG Spiral Flute Tap: #10-32 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1752508)
OSG Spiral Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 1650511108)
OSG
OSG Spiral Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 1650511108)