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Unified screw, Inch screw(Detailed Shape:Flat Head)

Category page for Unified / Imperial / Whitworth Screws. This category has a lineup of screws using international standards such as UNC / UNF / Whitworth. Sizes can be selected from nominal No. 0 to 12, 3/16 to 1 inch, length 1/16 to 10 inches, with 3 kinds of materials and 11 kinds of surface processing.

[Unified / Imperial / Whitworth Threads]
Products with threads cut in imperial units instead of metric units like those of parts regularly sold in Japan. These standards are commonly used in the US and the UK. These may be used for aircraft and import/export items.
Whitworth screw products originated in England and have threads cut at 55 degrees. Although this thread type has been removed from JIS standards, it is still currently used in buildings, electrical, water, and air conditioning facilities even in Japan.

Detailed Shape

  • Standard
  • Pan Head
  • Flat Head
  • Button Head Cap
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Brand
Product Series
CAD
Days to Ship
Detailed Shape
Thread Type
Thread Nominal (inch)
Length L (inch)
Length L (mm)
Mounting Hole Shape
Material
Surface Treatment
Tip Shape
Sales Unit
Application
Strength Class (Steel)

    Flat Bolt with Hex Socket Bolt (UNC) (Flat Cap Screw)

      Flat Bolt With Hex Socket (UNF) (Flat Cap Screw)

      • On Sale Till 31/03/2026

      UNC Flat Unified Screw

      • On Sale Till 31/03/2026

      Phillips Flat Head Screw

      • On Sale Till 31/03/2026

      Phillips Flat Head Screw UNF

      • On Sale Till 31/03/2026

      Hex Socket Flat Head Cap Screws UNC

        Hex Socket Flat Head Cap Screws UNF

          Whitworth Slotted Flat Screw

            UNC Slotted Flat Screw

            Brand

            SPS/UNBRAKO

            SPS/UNBRAKO

            SUNCO

            SUNCO

            SUNCO

            SUNCO

            SUNCO

            SUNCO

            SUNCO

            Product Series

            Flat Bolt with Hex Socket Bolt (UNC) (Flat Cap Screw)【1-100 Pieces Per Package】

            Flat Bolt With Hex Socket (UNF) (Flat Cap Screw)【1-100 Pieces Per Package】

            UNC Flat Unified Screw【1-100 Pieces Per Package】

            Phillips Flat Head Screw【1-500 Pieces Per Package】

            Phillips Flat Head Screw UNF【1-100 Pieces Per Package】

            Hex Socket Flat Head Cap Screws UNC【1-100 Pieces Per Package】

            Hex Socket Flat Head Cap Screws UNF【1-100 Pieces Per Package】

            Whitworth Slotted Flat Screw【1-1,100 Pieces Per Package】

            UNC Slotted Flat Screw【100 Pieces Per Package】

            CAD
            • 2D / 3D
            • 2D / 3D
            • 2D / 3D
            • 2D / 3D
            Days to Ship 8 Day(s) or more 8 Day(s) or more Same day or more Same day or more Same day or more Same day or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more
            Detailed ShapeFlat HeadFlat HeadFlat HeadFlat HeadFlat HeadFlat HeadFlat HeadFlat HeadFlat Head
            Thread TypeUnified Coarse UNCUnified Fine UNFUnified Coarse UNCUnified Coarse UNCUnified Fine UNFUnified Coarse UNCUnified Fine UNFWit CoarseUnified Coarse UNC
            Thread Nominal (inch)NO.10 ~ 5/16NO.10NO.10 ~ 3/8NO.10 ~ 5/16NO.0 ~ 1/4NO.10 ~ 7/16NO.0 ~ 5/161/2 ~ 5/16NO.2
            Length L (inch)1 ~ 5/81/2 ~ 5/81 ~ 7/161 ~ 7/161 ~ 7/161 ~ 7/161 ~ 7/16-1/4
            Length L (mm)-------10 ~ 150-
            Mounting Hole ShapeHex SocketHex SocketCross RecessedCross RecessedCross RecessedHex SocketHex SocketNegativeNegative
            MaterialSteelSteelStainlessStainless ~ SteelStainlessStainless ~ SteelStainless ~ SteelBrass ~ SteelStainless
            Surface TreatmentN/AN/A-Nickel PlatingN/AN/A / Black Oxide CoatingN/A / Black Oxide CoatingN/A / Trivalent Chromate / UniChrome Plating / Hot Dip Galvanizing / Chromate Plating / Nickel Plating-
            Tip ShapeFlat EndFlat EndFlat EndFlat EndFlat EndFlat EndFlat EndFlat EndFlat End
            Sales UnitBulk (Purchasing from 1 pc.) ~ Box / PackageBulk (Purchasing from 1 pc.) ~ Box / PackageBulk (Purchasing from 1 pc.) ~ Box / PackageBulk (Purchasing from 1 pc.) ~ Box / PackageBulk (Purchasing from 1 pc.) ~ Box / PackageBulk (Purchasing from 1 pc.) ~ Box / PackageBulk (Purchasing from 1 pc.) ~ Box / PackageBulk (Purchasing from 1 pc.) ~ Box / PackageBox / Package
            ApplicationStandardStandardStandardStandardStandardStandardStandard-Standard
            Strength Class (Steel)---------

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            Related Categories to Unified screw, Inch screw