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OSG STRAIGHT FLUTE

OSG is a Japanese manufacturer of cutting tools, taps, dies, and thread rolling products, founded in 1938 and headquartered in Toyokawa, Aichi Prefecture. The company's product range includes high-speed steel and powdered metal taps, carbide drills, end mills, and thread gages. OSG STRAIGHT FLUTE refers to a family of straight-flute machine taps designed for threading hardened steel and other difficult-to-machine materials. These taps are characterized by straight flutes, which provide strength and are suited for through-hole and blind-hole applications where chip evacuation is less critical than in spiral-flute designs. The straight-flute geometry also allows for a modified bottoming chamfer, enabling threads to be cut close to the bottom of blind holes. The taps in this line are available in metric and unified thread forms, including M20x2.5, M22x2.5, M24x1.5, 1"-12 UNF, 1"-8 UNC, 5/8"-11 UNC, 5/8"-18 UNF, and 3/4"-10 UNC. Tolerance classes include H5, H6, H7, D6, and D7, with corresponding 2B-3B or 4H-6H designations. Many are manufactured from V-coated powdered metal, which offers wear resistance and toughness when threading hardened steels. The taps typically feature 5 flutes and a modified bottoming chamfer. 3G Electric supplies the OSG STRAIGHT FLUTE line to industrial buyers worldwide. The catalog includes taps for hardened steel with various thread sizes, tolerances, and coatings. 3G Electric supports the line by providing product data, specifications, and quotation services for plant engineers, maintenance managers, and procurement specialists. The taps are used in applications such as tool and die making, mold making, automotive component manufacturing, and general machining where hardened materials require reliable threading. OSG's straight-flute taps are part of a broader offering that includes spiral-flute, forming, and pipe taps, but the straight-flute family is specifically engineered for rigidity and precision in hard materials. When selecting a tap, users consider thread size, pitch, tolerance class, chamfer type, coating, and material. The OSG STRAIGHT FLUTE taps are available in sizes up to 1 inch and M24, with additional sizes potentially available upon request. 3G Electric maintains inventory and can source specific part numbers, such as those listed with manufacturer part numbers 1005115208, 1105102408, and 1105101908. The taps are packaged individually and are suitable for CNC machining centers, tapping machines, and manual operations where a machine tap is required. For hardened steel applications, the V coating and powdered metal construction help extend tool life compared to uncoated high-speed steel taps. The modified bottoming chamfer allows threading to within a few threads of the bottom of a blind hole, reducing the need for secondary operations. The straight-flute design is not intended for deep-hole tapping where chip evacuation is problematic; in those cases, spiral-flute taps are recommended. However, for many through-hole and shallow blind-hole applications in hardened steel, straight-flute taps provide a balance of strength and precision. 3G Electric's role is to make these tools accessible to global buyers, with technical support and logistics. The company does not manufacture the taps but distributes them as part of its industrial equipment portfolio. This includes other product families such as industrial burners, pumps, and gas controls, but the OSG STRAIGHT FLUTE line is focused on threading tools. Buyers can request quotes for specific part numbers, and 3G Electric will confirm availability, lead time, and pricing. The product data provided includes thread type, tolerance, flute count, chamfer, coating, and material, enabling informed selection. For applications requiring different geometries or coatings, alternative OSG tap families may be available. The straight-flute taps are typically used in materials with hardness up to 35 HRC, but specific recommendations depend on the workpiece material and machining conditions. Users should consult OSG's technical documentation for speed and feed recommendations. 3G Electric can provide access to that documentation upon request. In summary, OSG STRAIGHT FLUTE taps are precision threading tools for hardened steel, available in a range of metric and unified sizes, with V-coated powdered metal options. 3G Electric supplies these taps globally, supporting procurement and engineering teams with product data and quotation services.

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About OSG STRAIGHT FLUTE

OSG is a Japanese manufacturer of cutting tools, taps, dies, and thread rolling products, founded in 1938 and headquartered in Toyokawa, Aichi Prefecture. The company's product range includes high-speed steel and powdered metal taps, carbide drills, end mills, and thread gages. OSG STRAIGHT FLUTE refers to a family of straight-flute machine taps designed for threading hardened steel and other difficult-to-machine materials. These taps are characterized by straight flutes, which provide strength and are suited for through-hole and blind-hole applications where chip evacuation is less critical than in spiral-flute designs. The straight-flute geometry also allows for a modified bottoming chamfer, enabling threads to be cut close to the bottom of blind holes. The taps in this line are available in metric and unified thread forms, including M20x2.5, M22x2.5, M24x1.5, 1"-12 UNF, 1"-8 UNC, 5/8"-11 UNC, 5/8"-18 UNF, and 3/4"-10 UNC. Tolerance classes include H5, H6, H7, D6, and D7, with corresponding 2B-3B or 4H-6H designations. Many are manufactured from V-coated powdered metal, which offers wear resistance and toughness when threading hardened steels. The taps typically feature 5 flutes and a modified bottoming chamfer. 3G Electric supplies the OSG STRAIGHT FLUTE line to industrial buyers worldwide. The catalog includes taps for hardened steel with various thread sizes, tolerances, and coatings. 3G Electric supports the line by providing product data, specifications, and quotation services for plant engineers, maintenance managers, and procurement specialists. The taps are used in applications such as tool and die making, mold making, automotive component manufacturing, and general machining where hardened materials require reliable threading. OSG's straight-flute taps are part of a broader offering that includes spiral-flute, forming, and pipe taps, but the straight-flute family is specifically engineered for rigidity and precision in hard materials. When selecting a tap, users consider thread size, pitch, tolerance class, chamfer type, coating, and material. The OSG STRAIGHT FLUTE taps are available in sizes up to 1 inch and M24, with additional sizes potentially available upon request. 3G Electric maintains inventory and can source specific part numbers, such as those listed with manufacturer part numbers 1005115208, 1105102408, and 1105101908. The taps are packaged individually and are suitable for CNC machining centers, tapping machines, and manual operations where a machine tap is required. For hardened steel applications, the V coating and powdered metal construction help extend tool life compared to uncoated high-speed steel taps. The modified bottoming chamfer allows threading to within a few threads of the bottom of a blind hole, reducing the need for secondary operations. The straight-flute design is not intended for deep-hole tapping where chip evacuation is problematic; in those cases, spiral-flute taps are recommended. However, for many through-hole and shallow blind-hole applications in hardened steel, straight-flute taps provide a balance of strength and precision. 3G Electric's role is to make these tools accessible to global buyers, with technical support and logistics. The company does not manufacture the taps but distributes them as part of its industrial equipment portfolio. This includes other product families such as industrial burners, pumps, and gas controls, but the OSG STRAIGHT FLUTE line is focused on threading tools. Buyers can request quotes for specific part numbers, and 3G Electric will confirm availability, lead time, and pricing. The product data provided includes thread type, tolerance, flute count, chamfer, coating, and material, enabling informed selection. For applications requiring different geometries or coatings, alternative OSG tap families may be available. The straight-flute taps are typically used in materials with hardness up to 35 HRC, but specific recommendations depend on the workpiece material and machining conditions. Users should consult OSG's technical documentation for speed and feed recommendations. 3G Electric can provide access to that documentation upon request. In summary, OSG STRAIGHT FLUTE taps are precision threading tools for hardened steel, available in a range of metric and unified sizes, with V-coated powdered metal options. 3G Electric supplies these taps globally, supporting procurement and engineering teams with product data and quotation services.

Common Applications

  • Tool and die making — OSG STRAIGHT FLUTE taps with V coating for threading hardened steel dies and molds.
  • Automotive component manufacturing — M24x1.5 and M20x2.5 taps for threading engine and transmission parts.
  • Mold making — 1"-8 UNC and 1"-12 UNF taps for large mold bases and plates.
  • General machining — 5/8"-11 UNC and 5/8"-18 UNF taps for through-hole and blind-hole threading in hard materials.
  • Aerospace — precision threading of hardened steel components with H6 and D6 tolerance taps.
  • Heavy equipment repair — M22x2.5 and 3/4"-10 UNC taps for maintenance of hardened steel parts.

Frequently asked questions

Common questions about OSG STRAIGHT FLUTE from 3G Electric.

What materials are OSG STRAIGHT FLUTE taps designed to thread?

OSG STRAIGHT FLUTE taps are primarily designed for threading hardened steel, including tool steels, die steels, and other materials that cause standard taps to wear rapidly. The V-coated powdered metal construction provides wear resistance and toughness. They can also be used in some aluminum and stainless steel applications, but the geometry and coating are optimized for hard materials. For best results, the workpiece hardness should be within the range recommended by OSG, typically up to 35 HRC for these taps. Users should verify compatibility with their specific material and machining conditions.

What is the difference between OSG STRAIGHT FLUTE taps and spiral-flute taps?

OSG STRAIGHT FLUTE taps have straight flutes, which provide a rigid cutting edge and are suited for through holes and blind holes where chip evacuation is not a primary concern. Spiral-flute taps have helical flutes that pull chips out of the hole, making them better for deep blind holes. Straight-flute taps can be made with a modified bottoming chamfer to thread closer to the bottom of a blind hole. The choice depends on hole type, depth, and material. For hardened steel, straight-flute taps offer strength and precision, while spiral-flute taps may be preferred for ductile materials and deep holes.

What does the H6 tolerance mean on an OSG STRAIGHT FLUTE tap?

The H6 tolerance on an OSG STRAIGHT FLUTE tap refers to the pitch diameter tolerance class for unified inch threads. H6 is a standard tolerance that provides a specific allowance and tolerance zone for the thread's pitch diameter. It is commonly used for general-purpose threading where a moderate fit is required. The H6 tolerance is often paired with a 2B-3B class of fit for internal threads. This tolerance ensures interchangeability and proper assembly. For metric threads, similar designations like D6 or D7 are used. The tolerance class affects the fit between the threaded hole and the mating fastener.

Can OSG STRAIGHT FLUTE taps be used in blind holes?

Yes, OSG STRAIGHT FLUTE taps with a modified bottoming chamfer are specifically designed for blind holes. The modified bottoming chamfer allows the tap to cut threads close to the bottom of the hole, minimizing the unthreaded portion. However, chip evacuation can be challenging in blind holes with straight-flute taps, so proper chip control and periodic retraction may be necessary. For deep blind holes, spiral-flute taps are often recommended. The straight-flute design provides rigidity, which is beneficial when threading hard materials. Users should ensure that chips are cleared to prevent tap breakage.

What is V coating on OSG STRAIGHT FLUTE taps?

V coating is a wear-resistant coating applied to OSG taps, typically a titanium-based coating such as TiN, TiCN, or TiAlN. The specific composition may vary by product. V coating reduces friction and wear, extending tool life when threading hard materials. It also helps to resist built-up edge and improves chip flow. On OSG STRAIGHT FLUTE taps, V coating is often combined with a powdered metal substrate, which offers high hardness and toughness. This combination is suitable for hardened steel and other demanding applications. The coating is applied to the cutting edges and flutes.

How do I select the right OSG STRAIGHT FLUTE tap for my application?

To select the right OSG STRAIGHT FLUTE tap, consider the thread size and pitch, tolerance class, chamfer type, coating, and material. Determine whether the hole is through or blind; for blind holes, a modified bottoming chamfer is often needed. Choose the tolerance class based on the required fit, such as H6 for general purpose or H7 for a looser fit. The V-coated powdered metal taps are suitable for hardened steel. Also consider the machine type and tapping speed. 3G Electric can provide product data and assist with part number selection. Consult OSG's technical documentation for speed and feed recommendations.