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OSG Straight Flute Tap: 7/8"-9 UNC, H4 / 2B-3B, 4 Flute, Plug Chamfer - General Purpose Hand Taps
OSGGeneral Purpose Hand Taps

OSG Straight Flute Tap: 7/8"-9 UNC, H4 / 2B-3B, 4 Flute, Plug Chamfer

The OSG Straight Flute Tap (7/8"-9 UNC) is a General Purpose Hand Tap with a TiN Coated High Speed Steel construction, featuring an H4 / 2B-3B tolerance, 4 flutes, and a Plug Chamfer (MPN 1135505). 3G Electric…

SKU 3G-OTH-221635

Brand
OSG
Item
Straight Flute Tap: 7/8"-9 UNC, H4 / 2B-3B, 4 Flute, Plug Chamfer
Category
General Purpose Hand Taps
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Technical Specifications

OSG
Manufacturer Part Number
1135505
Type
H4 / 2B-3B, Plug Chamfer, TiN Coated High Speed Steel
Flute
4
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Straight Flute Tap (7/8"-9 UNC) is a General Purpose Hand Tap with a TiN Coated High Speed Steel construction, featuring an H4 / 2B-3B tolerance, 4 flutes, and a Plug Chamfer (MPN 1135505). 3G Electric sources this genuine OSG threading tool across 14 industrial departments, with specialist expertise in combustion, pumps, and controls ensuring accurate specification and support.

Frequently Asked Questions

What is the OSG Straight Flute Tap 1135505 used for?

The OSG Straight Flute Tap 1135505 is a general-purpose hand tap designed for threading through holes in a wide range of materials. Its TiN coating reduces friction and extends tool life, making it suitable for maintenance, repair, and production environments where reliable UNC threads are required.

What are the specifications of the OSG Straight Flute Tap 1135505?

This OSG tap has a thread size of 7/8"-9 UNC, with an H4 tolerance for 2B-3B class fit. It features 4 flutes, a plug chamfer, and a TiN-coated high-speed steel construction. The manufacturer part number is 1135505, and the SKU is 54LL03.

Where to buy the OSG Straight Flute Tap 1135505 worldwide?

You can source the OSG Straight Flute Tap 1135505 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring you receive the correct threading tool for your application.

How to select the correct OSG tap for UNC threads?

To select the correct OSG tap, match the thread size (e.g., 7/8"-9 UNC) and class fit (2B-3B) to your workpiece requirements. The H4 tolerance indicates a slightly oversized tap for tighter internal threads. For through holes, a plug chamfer like this OSG model is standard. Always verify material compatibility with the TiN coating.

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 hand taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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