EXW Singapore — collect or forward from our Singapore office.

3G Electric
OSG 7/16"-28 UNEF Spiral-Flute Tap for Steel & Stainless Steel - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG 7/16"-28 UNEF Spiral-Flute Tap for Steel & Stainless Steel

The OSG Spiral Flute Tap (7/16"-28 UNEF) is a spiral-flute tap for steel and stainless steel, featuring an H4 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer (MPN 1650506008).

SKU 3G-OTH-218807

Brand
OSG
Item
7/16"-28 UNEF Spiral-Flute Tap for Steel & Stainless Steel
Part Number
1650506008
Category
Spiral-Flute Taps for Steel & Stainless Steel
Available to Order
Also known as:1650506008OSG
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.
EXW Singapore
Collect or forward from our office
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

OSG
Manufacturer Part Number
1650506008
Type
H4 / 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 (7/16"-28 UNEF) is a spiral-flute tap for steel and stainless steel, featuring an H4 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer (MPN 1650506008).

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 and out of the hole, preventing chip clogging and ensuring clean threads. This tap is ideal for high-precision applications requiring modified bottoming chamfer geometry.

What are the specifications of the OSG 7/16"-28 UNEF spiral flute tap?

This OSG tap has a 7/16"-28 UNEF thread size, H4 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. It is designed for threading steel and stainless steel. The manufacturer part number is 1650506008.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps worldwide. We handle full logistics, customs clearance, and delivery to your facility. As a global industrial solutions provider, we source genuine OSG cutting tools and support your procurement with technical expertise across 14 industrial departments.

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, choose a tap with H4 / 2B-3B tolerance for precise fit. A modified bottoming chamfer allows threading close to the hole bottom. OSG taps are engineered for chip evacuation in blind holes.

Used in

Common applications for OSG
Aerospace — OSG STI taps for installing helical wire thread inserts in aluminum components
Automotive — OSG spiral-point taps for through-hole threading in engine blocks and transmission cases
General machining — OSG spiral-flute taps for blind-hole threading in steel and stainless steel parts
Heavy equipment repair — OSG thread-forming taps for creating threads in ductile iron and steel castings
Precision manufacturing — OSG solid carbide chucking reamers for finishing holes in hydraulic manifolds
Die and mold — OSG coolant-through solid carbide drills for deep-hole drilling in tool steels
Not sure this is the right part? Photo-identify it→

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 →

More from OSG

View all OSG parts →
OSG Spiral Flute Tap: M36x1.5 Metric, D8 / 4H-6H, 4 Flute, Modified Bottoming Chamfer (MPN 1650008108)
OSG
OSG Spiral Flute Tap: M36x1.5 Metric, D8 / 4H-6H, 4 Flute, Modified Bottoming Chamfer (MPN 1650008108)
Spiral-flute tap for threading blind holes in steel and stainless steel. Features 3 flutes, H4 tolerance for 2B-3B thread classes, and a modified bottoming chamfer for threading close to hole bottoms. Part number 1722908
OSG
Spiral-flute tap for threading blind holes in steel and stainless steel. Features 3 flutes, H4 tolerance for 2B-3B thread classes, and a modified bottoming chamfer for threading close to hole bottoms. Part number 1722908
Spiral-flute tap for threading blind holes in steel and stainless steel. M8x1.25 metric thread, D5 / 4H-6H tolerance, 3 flutes, modified bottoming chamfer. Chip evacuation upward prevents clogging, allowing threading close to hole bottom
OSG
Spiral-flute tap for threading blind holes in steel and stainless steel. M8x1.25 metric thread, D5 / 4H-6H tolerance, 3 flutes, modified bottoming chamfer. Chip evacuation upward prevents clogging, allowing threading close to hole bottom
Spiral-flute tap for threading blind holes in steel and stainless steel. #10-24 UNC thread size, H5 tolerance, 2B-3B class, modified bottoming chamfer, 3 flutes. Lifts chips upward to prevent clogging in deep or blind holes
OSG
Spiral-flute tap for threading blind holes in steel and stainless steel. #10-24 UNC thread size, H5 tolerance, 2B-3B class, modified bottoming chamfer, 3 flutes. Lifts chips upward to prevent clogging in deep or blind holes
Spiral-flute tap for threading blind holes in steel and stainless steel. M12x1.75 metric thread, D6 / 4H-6H tolerance class, 3 flutes, modified bottoming chamfer. The spiral flute design lifts chips upward, preventing clogging in deep or blind holes. Suitable for automotive, aerospace, and general manufacturing applications requiring precise metric threads
OSG
Spiral-flute tap for threading blind holes in steel and stainless steel. M12x1.75 metric thread, D6 / 4H-6H tolerance class, 3 flutes, modified bottoming chamfer. The spiral flute design lifts chips upward, preventing clogging in deep or blind holes. Suitable for automotive, aerospace, and general manufacturing applications requiring precise metric threads
This OSG spiral-flute tap is designed for threading blind holes in steel and stainless steel. The spiral flute lifts chips upward, preventing clogging in deep or blind holes. It features a 1/2"-20 UNF thread size, H3 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. Suitable for general manufacturing applications requiring precise UNF threads
OSG
This OSG spiral-flute tap is designed for threading blind holes in steel and stainless steel. The spiral flute lifts chips upward, preventing clogging in deep or blind holes. It features a 1/2"-20 UNF thread size, H3 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. Suitable for general manufacturing applications requiring precise UNF threads
Spiral-flute tap for threading blind holes in steel and stainless steel. 3/8"-24 UNF thread, H4 / 2B-3B tolerance, bottoming chamfer, 3 flutes. V coated powdered metal construction. Chips evacuate upward, preventing clogging in blind-hole applications
OSG
Spiral-flute tap for threading blind holes in steel and stainless steel. 3/8"-24 UNF thread, H4 / 2B-3B tolerance, bottoming chamfer, 3 flutes. V coated powdered metal construction. Chips evacuate upward, preventing clogging in blind-hole applications
Spiral-flute tap for threading steel and stainless steel. Thread size 15/16"-20 UNEF with H5 tolerance for 2B-3B class fit. Features 4 flutes and a modified bottoming chamfer for chip evacuation in blind-hole applications
OSG
Spiral-flute tap for threading steel and stainless steel. Thread size 15/16"-20 UNEF with H5 tolerance for 2B-3B class fit. Features 4 flutes and a modified bottoming chamfer for chip evacuation in blind-hole applications

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first