OSG FORMING

OSG FORMING thread-forming taps create internal threads by cold-forming, displacing material rather than cutting it. This chip-free process eliminates chip evacuation issues, especially in blind holes, and can produce stronger threads due to work hardening. Conventional cutting taps remove material and generate chips, which may require additional cleaning steps. Thread-forming taps are typically used in ductile materials such as aluminum, brass, low-carbon steel, and stainless steel. They are not recommended for brittle materials like cast iron or certain plastics.

OSG FORMING oversized thread-forming taps are designed for ductile materials including aluminum, brass, low-carbon steel, and stainless steel. The cold-forming process requires the material to have sufficient ductility to flow into the thread form without cracking. Oversized taps are often used when the base material is thin-walled or when a larger minor diameter is needed for subsequent operations. They are available in UNC and UNF thread sizes, with tolerance classes such as H11 and H14. For specific material recommendations, consult the product datasheet.

VI coating is a wear-resistant coating applied to OSG FORMING taps, particularly those made from powdered metal (PM) substrates. The coating reduces friction and heat generation during thread forming, which can extend tool life and improve thread surface finish. VI-coated taps are often used in high-production environments or when machining materials that tend to gall or adhere to the tool. The combination of a PM substrate and VI coating offers a balance of toughness and wear resistance. Refer to the specific product datasheet for coating properties and recommended cutting parameters.

A modified bottoming chamfer on OSG FORMING taps is designed to allow threading close to the bottom of a blind hole. The chamfer geometry is altered to reduce the lead length while maintaining thread form and strength. This is useful when the thread must extend near the hole bottom, leaving minimal clearance. Modified bottoming chamfers are available on several OSG FORMING models, including high-performance and oversized variants. They are typically used in applications where standard bottoming taps cannot reach the required depth.

The OSG FORMING line includes metric sizes such as M1x0.25 and UNC/UNF sizes from #4-40 to 1/4"-20 and beyond. Tolerance classes include 6H for metric threads and H11 or H14 for oversized inch threads. The tolerance class determines the pitch diameter range of the internal thread. Selection depends on the required fit and the material being threaded. Oversized taps are often specified when the base material is thin or when a larger minor diameter is needed. Consult the product datasheet for exact size and tolerance combinations.

3G Electric supplies the OSG FORMING line as part of its industrial-equipment catalog, offering 414 SKUs with datasheets, specification comparisons, and global logistics support. Plant engineers, maintenance managers, and procurement specialists can source OSG FORMING taps through 3G Electric for applications in automotive, aerospace, electronics, and general machining. 3G Electric provides access to technical documentation and order fulfillment across multiple regions, with no geographic restrictions on shipping. For specific part numbers, refer to the product listings or contact 3G Electric directly.