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Unified screw, Inch screw(Thread Nominal (inch):1/4)

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)
  • On Sale Till 31/03/2025

Whitworth Hex Bolt

  • On Sale Till 31/03/2025

Hex Socket Head Cap Screws UNC

  • On Sale Till 31/03/2025

Hex Socket Button Head Cap Screw (Inch Thread) - SNBS

  • On Sale Till 31/03/2025

Hex Socket Head Cap Screws UNF

  • On Sale Till 31/03/2025

Hex Socket Head Bolt (Imperial Thread) SNSS

    Hex Socket Head Bolt (UNC) (Cap Screw)

      Button Bolt with Hex Socket (UNF) (Button Cap Screw)

      • On Sale Till 31/03/2025

      Phillips Pan Head Screw UNC

      • On Sale Till 31/03/2025

      Phillips Flat Head Screw

      • On Sale Till 31/03/2025

      Phillips Flat Head Screw UNF

      • On Sale Till 31/03/2025

      Fine Unified Hex Bolt, G-5

        Hex Socket Head Bolt (UNRF) (Cap Screw)

          Set Screw with Hex Socket (UNF), (Hollow Set), (Serrated Teeth)

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

            • On Sale Till 31/03/2025

            Hex Bolt, Fully Threaded, Whitworth

            • On Sale Till 31/03/2025

            Coarse Unified Hex Bolt, G-5

            • On Sale Till 31/03/2025

            Hex Socket Button Head Cap Screw UNC

            • On Sale Till 31/03/2025

            Hex Socket Flat Head Cap Screws UNC

            • On Sale Till 31/03/2025

            Hex Socket Set Screw Cup Point UNF (Unified Fine Threads)

              Set Screw with Hex Socket (UNC), (Hollow Set), (Serrated Teeth)

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

                • On Sale Till 31/03/2025

                Meter-Cut Right Thread Whitworth

                • On Sale Till 31/03/2025

                Phillips Pan Head Screw UNF

                • On Sale Till 31/03/2025

                Hex Socket Button Head Cap Screw UNF

                  Hex Socket Flat Head Cap Screws UNF

                  • On Sale Till 31/03/2025

                  Hex Socket Set Screw Cup Point UNC (Unified Coarse Threads)

                    Whitworth Slotted Flat Screw

                      Whitworth Slotted Round Screw

                      • On Sale Till 31/03/2025

                      UNC Flat Unified Screw

                      Brand

                      SUNCO

                      SUNCO

                      NABEYA BI-TECH

                      SUNCO

                      NABEYA BI-TECH

                      SPS/UNBRAKO

                      SPS/UNBRAKO

                      SUNCO

                      SUNCO

                      SUNCO

                      SUNCO

                      SPS/UNBRAKO

                      SPS/UNBRAKO

                      SPS/UNBRAKO

                      SUNCO

                      SUNCO

                      SUNCO

                      SUNCO

                      SUNCO

                      SPS/UNBRAKO

                      SPS/UNBRAKO

                      SUNCO

                      SUNCO

                      SUNCO

                      SUNCO

                      SUNCO

                      SUNCO

                      SUNCO

                      SUNCO

                      Product Series

                      Whitworth Hex Bolt

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

                      Hex Socket Button Head Cap Screw (Inch Thread) - SNBS【1-10 Pieces Per Package】

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

                      Hex Socket Head Bolt (Imperial Thread) SNSS【1-10 Pieces Per Package】

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

                      Button Bolt with Hex Socket (UNF) (Button Cap Screw)

                      Phillips Pan Head Screw UNC【1-500 Pieces Per Package】

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

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

                      Fine Unified Hex Bolt, G-5【1-650 Pieces Per Package】

                      Hex Socket Head Bolt (UNRF) (Cap Screw)

                      Set Screw with Hex Socket (UNF), (Hollow Set), (Serrated Teeth)【1-100 Pieces Per Package】

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

                      Hex Bolt, Fully Threaded, Whitworth【1-500 Pieces Per Package】

                      Coarse Unified Hex Bolt, G-5【1-650 Pieces Per Package】

                      Hex Socket Button Head Cap Screw UNC【1-100 Pieces Per Package】

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

                      Hex Socket Set Screw Cup Point UNF (Unified Fine Threads)【1-100 Pieces Per Package】

                      Set Screw with Hex Socket (UNC), (Hollow Set), (Serrated Teeth)【1-100 Pieces Per Package】

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

                      Meter-Cut Right Thread Whitworth

                      Phillips Pan Head Screw UNF

                      Hex Socket Button Head Cap Screw UNF【1-100 Pieces Per Package】

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

                      Hex Socket Set Screw Cup Point UNC (Unified Coarse Threads)【1-100 Pieces Per Package】

                      Whitworth Slotted Flat Screw【1-700 Pieces Per Package】

                      Whitworth Slotted Round Screw【1-600 Pieces Per Package】

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

                      CAD
                      • 2D / 3D
                      • 2D / 3D
                      • 2D / 3D
                      • 2D / 3D
                      • 2D / 3D
                      • 2D / 3D
                      • 2D / 3D
                      • 2D / 3D
                      • 2D / 3D
                      • 2D / 3D
                      • 2D / 3D
                      • 2D / 3D
                      • 2D / 3D
                      • 2D / 3D
                      • 2D / 3D
                      • 2D / 3D
                      Days to Ship Same day 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 Same day or more Same day or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 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 Same day or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more Same day or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more
                      Detailed ShapeStandardStandardButton Head CapStandardStandardStandardButton Head CapPan HeadFlat HeadFlat HeadStandardStandardStandardFlat HeadStandardStandardButton Head CapFlat Head-StandardButton Head CapStandardPan HeadButton Head CapFlat Head-Flat HeadPan HeadFlat Head
                      Thread TypeWit CoarseUnified Coarse UNCUnified Coarse UNCUnified Fine UNFUnified Coarse UNC / Unified Fine UNFUnified Coarse UNCUnified Fine UNFUnified Coarse UNCUnified Coarse UNCUnified Fine UNFUnified Fine UNFUnified Fine UNFUnified Fine UNFUnified Coarse UNCWit CoarseUnified Coarse UNCUnified Coarse UNCUnified Coarse UNCUnified Fine UNFUnified Coarse UNCUnified Coarse UNCWit CoarseUnified Fine UNFUnified Fine UNFUnified Fine UNFUnified Coarse UNCWit CoarseWit CoarseUnified Coarse UNC
                      Thread Nominal (inch)1/41/41/41/41/41/41/41/41/41/41/41/41/41/41/41/41/41/41/41/41/41/41/41/41/41/41/41/41/4
                      Length L (inch)-1 ~ 7/16-1 ~ 7/16-1 ~ 7/81/21 ~ 7/161 ~ 7/81 ~ 5/81 ~ 7/81 ~ 7/81 ~ 5/161 ~ 5/8-1 ~ 7/81 ~ 7/81 ~ 7/81 ~ 7/161/2 ~ 7/81/2 ~ 5/8-1 ~ 5/81 ~ 7/81 ~ 7/81 ~ 7/16--1 ~ 7/8
                      Length L (mm)10 ~ 50-------------8 ~ 100------1000----10 ~ 10010 ~ 100-
                      Mounting Hole ShapeHex SocketHex SocketHex SocketHex SocketHex SocketHex SocketHex SocketCross RecessedCross RecessedCross RecessedN/AHex SocketHex SocketHex SocketN/AN/AHex SocketHex SocketHex SocketHex SocketHex SocketN/ACross RecessedHex SocketHex SocketHex SocketNegativeNegativeCross Recessed
                      MaterialStainless ~ SteelStainless ~ SteelStainlessStainless ~ SteelStainlessSteelSteelStainlessStainlessStainlessStainless ~ SteelSteelSteelSteelBrass ~ SteelStainless ~ SteelStainless ~ SteelStainless ~ SteelStainless ~ SteelSteelSteelSteelStainlessStainless ~ SteelStainless ~ SteelStainless ~ SteelBrass ~ SteelBrass ~ SteelStainless
                      Surface TreatmentBlack Oxide CoatingBlack Oxide CoatingN/ABlack Oxide CoatingN/AN/AN/ABlack Painted--N/A / Black Oxide Coating / UniChrome Plating / Chromate Plating / Chrome Plating / Stainless CoatingN/AN/AN/AN/A / Black Oxide Coating / Trivalent Chromate / UniChrome Plating / Hot Dip Galvanizing / Chromate Plating / Nickel Plating / Parker / Stainless CoatingN/A / Black Oxide Coating / Trivalent Chromate / UniChrome Plating / Chromate Plating / Chrome Plating / Stainless CoatingN/A / Black Oxide CoatingN/A / Black Oxide CoatingBlack Oxide CoatingN/AN/AN/A-Black Oxide CoatingBlack Oxide CoatingBlack Oxide CoatingN/A / Trivalent Chromate / UniChrome Plating / Chromate PlatingTrivalent Chromate / UniChrome Plating / Chromate Plating / Nickel Plating-
                      Tip ShapeFlat EndFlat EndFlat EndFlat EndFlat EndFlat EndFlat EndFlat EndFlat EndFlat EndFlat EndFlat EndOther Special ShapesFlat EndFlat EndFlat EndFlat EndFlat EndCup PointOther Special ShapesFlat End-Flat EndFlat EndFlat EndCup PointFlat 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.)Bulk (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.)Bulk (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 / PackageBulk (Purchasing from 1 pc.)Box / PackageBulk (Purchasing from 1 pc.)Bulk (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 / Package
                      Application-StandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandard-StandardStandardStandardStandard--Standard
                      Strength Class (Steel)-----------------------------

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                      Related Categories to Unified screw, Inch screw