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Alloy Steel Button Head Hex Drive Screws

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R91255A312 | Alloy Steel Button Head Hex Drive Screws

$2.81

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Partially Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/2"-13, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/16", Screw Size Decimal Equivalent :0.500", Length :3 1/2", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.875", Head Height :0.265", Min Thread Length :1 1/2", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A313 | Alloy Steel Button Head Hex Drive Screws

$3.35

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Partially Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/2"-13, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/16", Screw Size Decimal Equivalent :0.500", Length :4", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.875", Head Height :0.265", Min Thread Length :1 1/2", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A376 | Alloy Steel Button Head Hex Drive Screws

$0.13

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :5/16"-24, Thread Spacing :Fine, Thread Type :UNF, Drive Size :3/16", Screw Size Decimal Equivalent :0.313", Length :3/8", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.547", Head Height :0.166", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A378 | Alloy Steel Button Head Hex Drive Screws

$0.15

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :5/16"-24, Thread Spacing :Fine, Thread Type :UNF, Drive Size :3/16", Screw Size Decimal Equivalent :0.313", Length :1/2", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.547", Head Height :0.166", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A380 | Alloy Steel Button Head Hex Drive Screws

$0.15

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :5/16"-24, Thread Spacing :Fine, Thread Type :UNF, Drive Size :3/16", Screw Size Decimal Equivalent :0.313", Length :5/8", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.547", Head Height :0.166", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A381 | Alloy Steel Button Head Hex Drive Screws

$0.13

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :5/16"-24, Thread Spacing :Fine, Thread Type :UNF, Drive Size :3/16", Screw Size Decimal Equivalent :0.313", Length :3/4", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.547", Head Height :0.166", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A383 | Alloy Steel Button Head Hex Drive Screws

$0.13

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :5/16"-24, Thread Spacing :Fine, Thread Type :UNF, Drive Size :3/16", Screw Size Decimal Equivalent :0.313", Length :1", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.547", Head Height :0.166", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A387 | Alloy Steel Button Head Hex Drive Screws

$0.30

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :5/16"-24, Thread Spacing :Fine, Thread Type :UNF, Drive Size :3/16", Screw Size Decimal Equivalent :0.313", Length :1 1/4", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.547", Head Height :0.166", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A509 | Alloy Steel Button Head Hex Drive Screws

$0.87

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/4"-28, Thread Spacing :Fine, Thread Type :UNF, Drive Size :5/32", Screw Size Decimal Equivalent :0.250", Length :3", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.437", Head Height :0.132", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A521 | Alloy Steel Button Head Hex Drive Screws

$0.62

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/4"-20, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/32", Screw Size Decimal Equivalent :0.250", Length :3/16", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.437", Head Height :0.132", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A522 | Alloy Steel Button Head Hex Drive Screws

$0.20

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/4"-20, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/32", Screw Size Decimal Equivalent :0.250", Length :5/16", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.437", Head Height :0.132", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A523 | Alloy Steel Button Head Hex Drive Screws

$0.22

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/4"-20, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/32", Screw Size Decimal Equivalent :0.250", Length :7/16", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.437", Head Height :0.132", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A524 | Alloy Steel Button Head Hex Drive Screws

$0.49

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/4"-20, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/32", Screw Size Decimal Equivalent :0.250", Length :9/16", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.437", Head Height :0.132", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A525 | Alloy Steel Button Head Hex Drive Screws

$0.58

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/4"-20, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/32", Screw Size Decimal Equivalent :0.250", Length :1 1/8", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.437", Head Height :0.132", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A526 | Alloy Steel Button Head Hex Drive Screws

$0.71

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/4"-20, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/32", Screw Size Decimal Equivalent :0.250", Length :1 3/8", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.437", Head Height :0.132", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A527 | Alloy Steel Button Head Hex Drive Screws

$0.89

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/4"-20, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/32", Screw Size Decimal Equivalent :0.250", Length :1 5/8", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.437", Head Height :0.132", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A528 | Alloy Steel Button Head Hex Drive Screws

$0.46

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/4"-20, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/32", Screw Size Decimal Equivalent :0.250", Length :2 1/4", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.437", Head Height :0.132", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A529 | Alloy Steel Button Head Hex Drive Screws

$0.57

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/4"-20, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/32", Screw Size Decimal Equivalent :0.250", Length :2 3/4", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.437", Head Height :0.132", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A531 | Alloy Steel Button Head Hex Drive Screws

$0.68

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/4"-20, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/32", Screw Size Decimal Equivalent :0.250", Length :3 1/2", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.437", Head Height :0.132", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A532 | Alloy Steel Button Head Hex Drive Screws

$0.78

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/4"-20, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/32", Screw Size Decimal Equivalent :0.250", Length :4", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.437", Head Height :0.132", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A533 | Alloy Steel Button Head Hex Drive Screws

$0.27

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/4"-20, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/32", Screw Size Decimal Equivalent :0.250", Length :1/4", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.437", Head Height :0.132", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A535 | Alloy Steel Button Head Hex Drive Screws

$0.11

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/4"-20, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/32", Screw Size Decimal Equivalent :0.250", Length :3/8", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.437", Head Height :0.132", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A537 | Alloy Steel Button Head Hex Drive Screws

$0.08

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/4"-20, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/32", Screw Size Decimal Equivalent :0.250", Length :1/2", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.437", Head Height :0.132", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A539 | Alloy Steel Button Head Hex Drive Screws

$0.11

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/4"-20, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/32", Screw Size Decimal Equivalent :0.250", Length :5/8", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.437", Head Height :0.132", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A540 | Alloy Steel Button Head Hex Drive Screws

$0.12

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/4"-20, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/32", Screw Size Decimal Equivalent :0.250", Length :3/4", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.437", Head Height :0.132", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A541 | Alloy Steel Button Head Hex Drive Screws

$0.11

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/4"-20, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/32", Screw Size Decimal Equivalent :0.250", Length :7/8", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.437", Head Height :0.132", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A542 | Alloy Steel Button Head Hex Drive Screws

$0.13

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/4"-20, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/32", Screw Size Decimal Equivalent :0.250", Length :1", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.437", Head Height :0.132", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A544 | Alloy Steel Button Head Hex Drive Screws

$0.48

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/4"-20, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/32", Screw Size Decimal Equivalent :0.250", Length :1 1/4", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.437", Head Height :0.132", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A545 | Alloy Steel Button Head Hex Drive Screws

$0.62

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Partially Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/4"-20, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/32", Screw Size Decimal Equivalent :0.250", Length :2", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.437", Head Height :0.132", Min Thread Length :1", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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R91255A546 | Alloy Steel Button Head Hex Drive Screws

$0.67

System of Measurement :Inch, class name :Alloy Steel Button Head Hex Drive Screws, Drive Style :Hex, Head Type :Rounded, Threading :Fully Threaded, Thread Direction :Right Hand, Thread Fit :Class 3A, Thread Size :1/4"-20, Thread Spacing :Coarse, Thread Type :UNC, Drive Size :5/32", Screw Size Decimal Equivalent :0.250", Length :1 1/2", Main Material :Black-Oxide Alloy Steel, Hardness :Rockwell C39, Tensile Strength :120,000 psi, Specifications Met :ASME B18.3;ASTM F835, Country of Origin :Peoples Republic of China, Head Diameter :0.437", Head Height :0.132", Rounded Head Profile :Standard, Rounded Head Style :Button, Schedule B :731815.9000,

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