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OSG SPIRAL FLUTE

OSG is a Japanese cutting-tool manufacturer with a history dating to 1938, when it began producing taps in Osaka. The company now operates globally, with manufacturing and sales operations across Asia, Europe, and the Americas. Its product range covers taps, dies, drills, end mills, and thread mills, with taps remaining a core category. The OSG SPIRAL FLUTE line consists of spiral-flute taps intended for threading blind holes in steel and stainless steel. These taps are characterized by helical flutes that pull chips out of the hole in the direction opposite to the cutting advance, which reduces chip clogging and the risk of thread damage in applications where chip evacuation is difficult. The line includes both metric and inch thread forms. Metric sizes in the 3G Electric catalog include M15x2 with D7 / 4H-6H tolerance, while inch sizes cover UNC and UNF threads such as #6-32, #8-32, #10-32, and 9/16"-18. Thread classes for inch sizes are typically 2B-3B, with H2, H3, or H4 ground thread tolerances depending on the specific tool. Flute counts range from 2 to 4, and chamfer styles include modified bottoming and bottoming, which are suited to threads that must run close to the bottom of a blind hole. The taps are available with different chamfer lengths and flute geometries to match the material being threaded and the machine setup. 3G Electric supplies the OSG SPIRAL FLUTE line as part of its industrial cutting-tool inventory. The catalog includes 56 SKUs at present, with product data such as thread size, pitch, tolerance class, flute count, chamfer type, and manufacturer part number. This allows a buyer to match a tap to an existing tooling list or to a print specification without needing to cross-reference multiple sources. For plant engineers and maintenance managers, the line addresses common blind-hole threading tasks in steel and stainless steel, where chip evacuation and thread finish are primary concerns. The spiral-flute design is intended to reduce the need for secondary operations such as chip removal after tapping. 3G Electric provides datasheets and logistics support for the OSG SPIRAL FLUTE range, including international shipping. The company serves industrial buyers globally, with the ability to quote and fulfill orders for single tools or larger quantities. Technical support is available to help identify the correct tap for a given thread specification, material, and hole type. The OSG SPIRAL FLUTE line is one of several cutting-tool families that 3G Electric distributes, and it is stocked alongside other industrial equipment categories such as burners, pumps, and gas controls. Buyers can request a quote by referencing the SKU or manufacturer part number, and 3G Electric will confirm availability and lead time.

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About OSG SPIRAL FLUTE

OSG is a Japanese cutting-tool manufacturer with a history dating to 1938, when it began producing taps in Osaka. The company now operates globally, with manufacturing and sales operations across Asia, Europe, and the Americas. Its product range covers taps, dies, drills, end mills, and thread mills, with taps remaining a core category. The OSG SPIRAL FLUTE line consists of spiral-flute taps intended for threading blind holes in steel and stainless steel. These taps are characterized by helical flutes that pull chips out of the hole in the direction opposite to the cutting advance, which reduces chip clogging and the risk of thread damage in applications where chip evacuation is difficult. The line includes both metric and inch thread forms. Metric sizes in the 3G Electric catalog include M15x2 with D7 / 4H-6H tolerance, while inch sizes cover UNC and UNF threads such as #6-32, #8-32, #10-32, and 9/16"-18. Thread classes for inch sizes are typically 2B-3B, with H2, H3, or H4 ground thread tolerances depending on the specific tool. Flute counts range from 2 to 4, and chamfer styles include modified bottoming and bottoming, which are suited to threads that must run close to the bottom of a blind hole. The taps are available with different chamfer lengths and flute geometries to match the material being threaded and the machine setup. 3G Electric supplies the OSG SPIRAL FLUTE line as part of its industrial cutting-tool inventory. The catalog includes 56 SKUs at present, with product data such as thread size, pitch, tolerance class, flute count, chamfer type, and manufacturer part number. This allows a buyer to match a tap to an existing tooling list or to a print specification without needing to cross-reference multiple sources. For plant engineers and maintenance managers, the line addresses common blind-hole threading tasks in steel and stainless steel, where chip evacuation and thread finish are primary concerns. The spiral-flute design is intended to reduce the need for secondary operations such as chip removal after tapping. 3G Electric provides datasheets and logistics support for the OSG SPIRAL FLUTE range, including international shipping. The company serves industrial buyers globally, with the ability to quote and fulfill orders for single tools or larger quantities. Technical support is available to help identify the correct tap for a given thread specification, material, and hole type. The OSG SPIRAL FLUTE line is one of several cutting-tool families that 3G Electric distributes, and it is stocked alongside other industrial equipment categories such as burners, pumps, and gas controls. Buyers can request a quote by referencing the SKU or manufacturer part number, and 3G Electric will confirm availability and lead time.

Common Applications

  • Automotive — OSG SPIRAL FLUTE taps for blind-hole threading in steel and stainless steel components on engine and transmission lines.
  • Aerospace — Spiral-flute taps for UNF and UNC threads in stainless steel brackets and fittings where chip evacuation is critical.
  • Industrial machinery — OSG SPIRAL FLUTE taps for metric threads such as M15x2 in blind holes in steel frames and housings.
  • Maintenance and repair — Spiral-flute taps for rethreading or repairing blind holes in steel and stainless steel equipment.
  • Job shops — OSG SPIRAL FLUTE taps in UNC and UNF sizes for general blind-hole tapping in steel and stainless steel workpieces.
  • Energy — Spiral-flute taps for threading blind holes in stainless steel valve bodies and manifolds.

Guides & Resources

Frequently asked questions

Common questions about OSG SPIRAL FLUTE from 3G Electric.

What is the difference between OSG SPIRAL FLUTE taps and standard straight-flute taps?

OSG SPIRAL FLUTE taps have helical flutes that lift chips out of the hole as the tap advances. Straight-flute taps rely on the chip falling or being blown out, which can be unreliable in blind holes. The spiral geometry is intended to reduce chip packing and the associated risk of tap breakage or poor thread finish. For blind-hole threading in steel and stainless steel, this can simplify chip management. The trade-off is that spiral-flute taps are generally not recommended for through holes where a straight-flute or spiral-point tap may be more efficient.

Which OSG SPIRAL FLUTE tap sizes are available for metric threads?

The 3G Electric catalog includes OSG SPIRAL FLUTE taps in metric sizes such as M15x2. This specific tap has a D7 / 4H-6H tolerance, 3 flutes, and a modified bottoming chamfer. It is intended for blind-hole threading in steel and stainless steel. Other metric sizes may be available on request. Buyers should confirm the thread size, pitch, and tolerance class required for their application, as these determine the correct tool for the job.

What does the H3 tolerance mean on an OSG SPIRAL FLUTE tap?

H3 is a ground thread tolerance class for inch-series taps. It indicates the allowable deviation from the basic thread size. For OSG SPIRAL FLUTE taps, an H3 tolerance is commonly paired with a 2B-3B thread class, which is a standard fit for many industrial applications. The tolerance affects the pitch diameter of the finished thread. Selecting the correct tolerance depends on the specified thread class and the material being tapped. A tighter tolerance may be needed for precision assemblies, while a looser tolerance can help in materials that tend to gall or shrink after tapping.

Can OSG SPIRAL FLUTE taps be used in stainless steel?

Yes. The OSG SPIRAL FLUTE line includes taps specifically intended for steel and stainless steel. Stainless steel can work-harden, so the tap geometry and surface treatment matter. The spiral flutes help evacuate chips, which reduces the chance of chip recutting and excessive heat. For best results, use the recommended cutting speed and lubricant for the specific stainless grade. The catalog lists taps for blind holes in these materials, with various thread sizes and tolerances. If you are unsure which tap to use, provide the material grade and hole depth to 3G Electric for a recommendation.

What is the difference between bottoming and modified bottoming chamfer on OSG SPIRAL FLUTE taps?

Chamfer refers to the tapered lead-in at the tip of the tap. A bottoming chamfer has a short lead, allowing the tap to cut threads close to the bottom of a blind hole. A modified bottoming chamfer is similar but may have a slightly different geometry to balance strength and reach. Both are intended for blind holes where full thread depth is needed near the bottom. The choice depends on the hole depth and the required thread length. OSG SPIRAL FLUTE taps in the 3G Electric catalog include both styles, identified in the product specifications.

How do I identify the correct OSG SPIRAL FLUTE tap for my application?

Start with the thread specification: size, pitch, and thread class. Then confirm the hole type (blind or through) and the material. For blind holes in steel or stainless steel, a spiral-flute tap with a bottoming or modified bottoming chamfer is typically appropriate. Check the flute count and tolerance class against your print or existing tooling. The manufacturer part number and SKU can be used to cross-reference. 3G Electric lists these attributes for each OSG SPIRAL FLUTE tap in its catalog. If you need help, provide the thread callout and material to 3G Electric for assistance.