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

OSG 9/16"-18 UNF Spiral-Flute Tap for Steel & Stainless Steel - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG 9/16"-18 UNF Spiral-Flute Tap for Steel & Stainless Steel

The OSG Spiral Flute Tap (9/16"-18 UNF) is a 3-flute, modified bottoming chamfer tap with H3 / 2B-3B tolerance, designed for threading steel and stainless steel. This OSG tap, MPN 1645096183, is a spiral-flute type…

SKU 3G-OTH-217887

Brand
OSG
Item
9/16"-18 UNF Spiral-Flute Tap for Steel & Stainless Steel
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 — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

OSG
Manufacturer Part Number
1645096183
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"-18 UNF) is a 3-flute, modified bottoming chamfer tap with H3 / 2B-3B tolerance, designed for threading steel and stainless steel. This OSG tap, MPN 1645096183, is a spiral-flute type for chip evacuation in through-hole applications.

Frequently Asked Questions

What is the OSG spiral flute tap 9/16"-18 UNF used for?

This OSG spiral flute tap is designed for threading blind holes in steel and stainless steel. Its spiral flute design evacuates chips upward, preventing clogging, while the modified bottoming chamfer allows threading close to the hole bottom. It is commonly used in automotive, aerospace, and general manufacturing applications.

What are the specifications of the OSG spiral flute tap 9/16"-18 UNF?

The OSG spiral flute tap has a thread size of 9/16"-18 UNF, with a H3 / 2B-3B tolerance class. It features 3 flutes and a modified bottoming chamfer. The manufacturer part number is 1645096183. This tap is intended for threading steel and stainless steel materials in blind hole applications.

Where to buy OSG spiral flute taps worldwide?

3G Electric supplies OSG spiral flute taps worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the OSG spiral flute tap 9/16"-18 UNF (MPN 1645096183). We source and deliver to meet your production needs.

How to select the correct OSG spiral flute tap for steel?

Select an OSG spiral flute tap based on thread size, tolerance class, and material. For steel and stainless steel blind holes, use a tap with a modified bottoming chamfer to thread close to the hole bottom. The H3 / 2B-3B tolerance ensures proper fit. Always match the tap to the specific material hardness and thread depth required.

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: 9/16"-12 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1645096123)
OSG
OSG Spiral Flute Tap: 9/16"-12 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1645096123)
OSG Spiral Flute Tap: 9/16"-18 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1762308)
OSG
OSG Spiral Flute Tap: 9/16"-18 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1762308)
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: 7/8"-14 UNF, H6 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 1645078146)
OSG
OSG Spiral Flute Tap: 7/8"-14 UNF, H6 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 1645078146)
OSG Spiral Flute Tap: 9/16"-18 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1762305)
OSG
OSG Spiral Flute Tap: 9/16"-18 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1762305)
Spiral-flute tap for threading blind holes in steel and stainless steel. The spiral flute design evacuates chips upward to prevent clogging. Modified bottoming chamfer allows threading close to the hole bottom. Tolerance class H3 / 2B-3B. 3 flutes
OSG
Spiral-flute tap for threading blind holes in steel and stainless steel. The spiral flute design evacuates chips upward to prevent clogging. Modified bottoming chamfer allows threading close to the hole bottom. Tolerance class H3 / 2B-3B. 3 flutes

More from OSG

View all OSG parts
Metric spiral-flute tap for threading blind holes in steel and stainless steel. Features a modified bottoming chamfer for threading close to hole bottoms. Tolerance class D3 / 4H-6H. 3 flutes. Manufacturer part number 1650004408
OSG
Metric spiral-flute tap for threading blind holes in steel and stainless steel. Features a modified bottoming chamfer for threading close to hole bottoms. Tolerance class D3 / 4H-6H. 3 flutes. Manufacturer part number 1650004408
Spiral-flute tap for threading blind holes in steel and stainless steel. Features 3 flutes, bottoming chamfer, and V coated powdered metal construction. Tolerance class H3 / 2B-3B. Thread size 3/8"-24 UNF
OSG
Spiral-flute tap for threading blind holes in steel and stainless steel. Features 3 flutes, bottoming chamfer, and V coated powdered metal construction. Tolerance class H3 / 2B-3B. Thread size 3/8"-24 UNF
Spiral-flute tap for threading steel and stainless steel. #4-48 UNF thread size, H2 tolerance class (2B-3B), 2-flute design with modified bottoming chamfer. Suitable for through-hole or blind-hole applications requiring chip evacuation
OSG
Spiral-flute tap for threading steel and stainless steel. #4-48 UNF thread size, H2 tolerance class (2B-3B), 2-flute design with modified bottoming chamfer. Suitable for through-hole or blind-hole applications requiring chip evacuation
Spiral-flute tap with 1/4"-28 UNF thread, H3 / 2B-3B tolerance, 3 flutes, and modified bottoming chamfer. Designed for threading blind holes in steel and stainless steel; spiral flutes evacuate chips upward to prevent clogging. Suitable for general manufacturing applications requiring UNF threads
OSG
Spiral-flute tap with 1/4"-28 UNF thread, H3 / 2B-3B tolerance, 3 flutes, and modified bottoming chamfer. Designed for threading blind holes in steel and stainless steel; spiral flutes evacuate chips upward to prevent clogging. Suitable for general manufacturing applications requiring UNF threads
Spiral-flute tap for threading blind holes in steel and stainless steel. The spiral flute design evacuates chips upward, preventing clogging and enabling clean threads. Thread size #4-40 UNC, 2-flute design, modified bottoming chamfer, rated H4 / 2B-3B for thread fit
OSG
Spiral-flute tap for threading blind holes in steel and stainless steel. The spiral flute design evacuates chips upward, preventing clogging and enabling clean threads. Thread size #4-40 UNC, 2-flute design, modified bottoming chamfer, rated H4 / 2B-3B for thread fit
Spiral-flute tap for threading blind holes in steel and stainless steel. Features a modified bottoming chamfer for threading close to the hole bottom. M10x1.5 metric thread, D6 shank diameter, 4H-6H tolerance class, 3 flutes. Part number 1645510156
OSG
Spiral-flute tap for threading blind holes in steel and stainless steel. Features a modified bottoming chamfer for threading close to the hole bottom. M10x1.5 metric thread, D6 shank diameter, 4H-6H tolerance class, 3 flutes. Part number 1645510156
Spiral-flute tap for threading blind holes in steel and stainless steel. Features a modified bottoming chamfer and 2-flute design to lift chips upward, preventing clogging. Suitable for applications requiring precise internal threads in automotive, aerospace, and general manufacturing
OSG
Spiral-flute tap for threading blind holes in steel and stainless steel. Features a modified bottoming chamfer and 2-flute design to lift chips upward, preventing clogging. Suitable for applications requiring precise internal threads in automotive, aerospace, and general manufacturing
Spiral-flute tap for threading blind holes in steel and stainless steel. Features #8-32 UNC thread size, H2 / 2B-3B tolerance, 3 flutes, and bottoming chamfer. The spiral flute design lifts chips upward, preventing clogging in deep or blind-hole applications
OSG
Spiral-flute tap for threading blind holes in steel and stainless steel. Features #8-32 UNC thread size, H2 / 2B-3B tolerance, 3 flutes, and bottoming chamfer. The spiral flute design lifts chips upward, preventing clogging in deep or blind-hole applications