This is an adapter for converting external diameter inch screws to internal diameter metric standard screw holes.
By inserting into existing Unified Fine (UNF) screw holes, it can be converted to metric coarse screw holes. You can use domestic standard screws for imported items and other inch or Unified standard holes. It has a hex head type, making it easy to tighten with a wrench or similar tool. There is also a type with an outer diameter of Unified Coarse (UNC).
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basic information
【Material】 Main body and washer: Equivalent to SUS304 【Size: Outer diameter Unified Fine (UNF) × Inner diameter Metric Coarse】 Inner diameter M3*P0.5, Outer diameter UNF 1/4-28×1/4, Screw length 6.3mm Inner diameter M4*P0.7, Outer diameter UNF 5/16-24×5/16, Screw length 7.9mm Inner diameter M5*P0.8, Outer diameter UNF 3/8-24×3/8, Screw length 9.5mm Inner diameter M6*P1.0, Outer diameter UNF 7/16-20×7/16, Screw length 11.1mm Inner diameter M8*P1.25, Outer diameter UNF 1/2-20×1/2, Screw length 12.7mm
Price range
Delivery Time
Applications/Examples of results
For size conversion and repairs of inch holes and unified holes.
Detailed information
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Usage example
Line up（5）
| Model number | overview |
|---|---|
| SCBF3-1-4 | Inner diameter M3*P0.5, outer diameter UNF 1/4-28×1/4, screw length 6.3mm |
| SCBF4-5-16 | Inner diameter M4*P0.7, outer diameter UNF 5/16-24×5/16, screw length 7.9mm |
| SCBF5-3-8 | Inner diameter M5*P0.8, outer diameter UNF 3/8-24×3/8, screw length 9.5mm |
| SCBF6-7-16 | Inner diameter M6*P1.0, outer diameter UNF 7/16-20×7/16, screw length 11.1mm |
| SCBF8-1-2 | Inner diameter M8*P1.25, outer diameter UNF 1/2-20×1/2, screw length 12.7mm |
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Company information
Our company sells items that can be widely used in factories, construction sites, DIY projects, and hobbies, all with the motto of "buying easily" and "using easily." While there is a world where you can find anything if you look, sometimes having too many options can be overwhelming. There are many products where the needs of the buyer and seller do not align, such as "I bought it, but there are no screws!" or "I want to buy it, but I need something shorter!" By adding a little extra effort to such products, our company aims to provide better products by always considering the feelings of the buyer in our planning, manufacturing, and sales, making convenient items even more convenient and easier to purchase.