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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 H4 / 2B-3B, bottoming-chamfer, V Coated Powdered Metal tap with 3 flutes (MPN 1650512508). Designed for threading steel and stainless steel, it delivers precise internal…

SKU 3G-OTH-217856

Brand
OSG
Item
7/16"-28 UNEF Spiral-Flute Tap for Steel & Stainless Steel
Category
Spiral-Flute Taps for Steel & Stainless Steel
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

OSG
Manufacturer Part Number
1650512508
Type
H4 / 2B-3B, Bottoming Chamfer, V Coated Powdered Metal
Flute
3

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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Flute Tap (7/16"-28 UNEF) is a H4 / 2B-3B, bottoming-chamfer, V Coated Powdered Metal tap with 3 flutes (MPN 1650512508). Designed for threading steel and stainless steel, it delivers precise internal threads in blind-hole applications.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the OSG spiral flute tap 1650512508 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. The 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 7/16"-28 UNEF spiral flute tap?

The OSG tap has a thread size of 7/16"-28 UNEF, with a H4 / 2B-3B tolerance class. It features 3 flutes, a bottoming chamfer, and a V coating on powdered metal. The manufacturer part number is 1650512508. It is suitable for threading blind holes in steel and stainless steel.

Where to buy OSG taps in worldwide?

You can source OSG taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We provide genuine OSG cutting tools for manufacturing and maintenance applications.

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

Select based on thread size, pitch, and hole type. For blind holes in steel, use a spiral flute tap with bottoming chamfer. The OSG 1650512508 is designed for 7/16"-28 UNEF threads. Ensure the tap tolerance (H4) matches the required thread class (2B-3B). Use appropriate cutting fluid for steel to extend tool life.

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.

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Cross-referenced by specification & description
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OSG Spiral Flute Tap: 1/2"-28 UNEF, H4 / 2B-3B, 3 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 1650513008)
Bottoming-chamfer spiral-flute tap with 3 flutes, made from V-coated powdered metal. Thread size 7/16"-20 UNF, tolerance H3 / 2B-3B. Designed for threading blind holes in steel and stainless steel, with chip evacuation upward to prevent clogging
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Bottoming-chamfer spiral-flute tap with 3 flutes, made from V-coated powdered metal. Thread size 7/16"-20 UNF, tolerance H3 / 2B-3B. Designed for threading blind holes in steel and stainless steel, with chip evacuation upward to prevent clogging
Spiral-flute tap for threading blind holes in steel and stainless steel. Features a bottoming chamfer to cut threads close to the hole bottom. Made from V-coated powdered metal with 3 flutes. Tolerance class H3 / 2B-3B
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Spiral-flute tap for threading blind holes in steel and stainless steel. Features a bottoming chamfer to cut threads close to the hole bottom. Made from V-coated powdered metal with 3 flutes. Tolerance class H3 / 2B-3B
Spiral-flute tap for threading steel and stainless steel. Features a bottoming chamfer for through-hole or blind-hole applications requiring threads to the bottom. Constructed from V-coated powdered metal for wear resistance and efficient chip evacuation. Thread size #12-32 UNEF, H3 / 2B-3B tolerance, 3-flute design
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Spiral-flute tap for threading steel and stainless steel. Features a bottoming chamfer for through-hole or blind-hole applications requiring threads to the bottom. Constructed from V-coated powdered metal for wear resistance and efficient chip evacuation. Thread size #12-32 UNEF, H3 / 2B-3B tolerance, 3-flute design
Spiral-flute tap for threading blind holes in steel and stainless steel. Features a bottoming chamfer for threading close to the hole bottom, 3 flutes, and V-coated powdered metal construction. Tolerance class H4 / 2B-3B ensures precise thread fit. Thread size 5/16-24 UNF
OSG
Spiral-flute tap for threading blind holes in steel and stainless steel. Features a bottoming chamfer for threading close to the hole bottom, 3 flutes, and V-coated powdered metal construction. Tolerance class H4 / 2B-3B ensures precise thread fit. Thread size 5/16-24 UNF
Spiral-flute tap for threading blind holes in steel and stainless steel. Features a bottoming chamfer, 3 flutes, and V coating on powdered metal substrate. Thread size 1/4"-32 UNEF, tolerance H3 / 2B-3B. Suitable for production tapping in general manufacturing applications
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Spiral-flute tap for threading blind holes in steel and stainless steel. Features a bottoming chamfer, 3 flutes, and V coating on powdered metal substrate. Thread size 1/4"-32 UNEF, tolerance H3 / 2B-3B. Suitable for production tapping in general manufacturing applications

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