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Precision Ground Flat Stock - Regular and oversized steel

Precision Ground Flat Stock (GFS) is a precision-ground flat bar made of alloyed or unalloyed steel and is also referred to as Gauge Stock or simply Flats.

The precision grinding ensures that all sides of the workpiece have a smooth surface and strictly controlled dimensional tolerances, and are free from surface defects and decarburization.

Additional designations for Precision Ground Flat Steel also include Key Stock, Shim Stock, Sheets, Strips, Squares, or Plates.
precision-ground-flat-stock-advantages
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Shopping Options
Types of Steel
  1. Case Hardening Steel
  2. Heat-Treatable Steel
  3. Stainless Steel
  4. Tool Steel
Specifications
  1. Precision Ground Flat Stock Metric, oversize
  2. Precision Ground Flat Stock Metric, regular
  3. Precision Ground Flat Stock, oversize
  4. Precision Ground Flat Stock, regular
Steel Grade
  1. 1018 / A36
  2. 4140 PH / 4142 PH
  3. 1045
  4. 420
  5. 420 LC
  6. 420FM
  7. 440B
  8. 5115
  9. 5120
  10. A2
  11. D2
  12. O1
  13. P20 PH
Width
  1. 1/8"
  2. 5/32"
  3. 3/16"
  4. 7/32"
  5. 1/4"
  6. 9/32"
  7. 5/16"
  8. 3/8"
  9. 7/16"
  10. 1/2"
  11. 9/16"
  12. 5/8"
  13. 3/4"
  14. 7/8"
  15. 1"
  16. 1-1/8"
  17. 1-1/4"
  18. 1-1/2"
  19. 1-3/4"
  20. 2"
  21. 2-1/4"
  22. 2-1/2"
  23. 3"
  24. 3-1/2"
  25. 4.0 mm
  26. 4"
  27. 4-1/2"
  28. 5.0 mm
  29. 5"
  30. 5-1/2"
  31. 6.0 mm
  32. 6"
  33. 6.2 mm
  34. 7"
  35. 8.0 mm
  36. 8"
  37. 8.2 mm
  38. 9"
  39. 10.0 mm
  40. 10"
  41. 10.3 mm
  42. 12.0 mm
  43. 12"
  44. 12.3 mm
  45. 14"
  46. 15.0 mm
  47. 15.3 mm
  48. 16.0 mm
  49. 16.3 mm
  50. 18.0 mm
  51. 18.3 mm
  52. 20.0 mm
  53. 20.3 mm
  54. 25.0 mm
  55. 25.3 mm
  56. 30.0 mm
  57. 30.3 mm
  58. 32.0 mm
  59. 32.3 mm
  60. 35.0 mm
  61. 35.3 mm
  62. 40.0 mm
  63. 40.3 mm
  64. 50.0 mm
  65. 50.3 mm
  66. 60.0 mm
  67. 60.3 mm
  68. 63.0 mm
  69. 63.3 mm
  70. 70.0 mm
  71. 70.3 mm
  72. 80.0 mm
  73. 80.3 mm
  74. 90.0 mm
  75. 90.3 mm
  76. 100.0 mm
  77. 100.3 mm
  78. 120.0 mm
  79. 120.3 mm
  80. 125.0 mm
  81. 125.3 mm
  82. 140.0 mm
  83. 150.0 mm
  84. 150.3 mm
  85. 160.0 mm
  86. 160.3 mm
  87. 175.0 mm
  88. 175.3 mm
  89. 180.0 mm
  90. 180.3 mm
  91. 200.0 mm
  92. 200.3 mm
  93. 250.0 mm
  94. 250.3 mm
  95. 300.0 mm
  96. 300.3 mm
Length
  1. 18"
  2. 24"
  3. 36"
  4. 500 mm
  5. 1,000 mm
Thickness
  1. 1/32"
  2. 3/64"
  3. 1/16"
  4. 5/64"
  5. 3/32"
  6. 7/64"
  7. 1/8"
  8. 9/64"
  9. 5/32"
  10. 3/16"
  11. 7/32"
  12. 1/4"
  13. 9/32"
  14. 5/16"
  15. 3/8"
  16. 7/16"
  17. 1/2"
  18. 9/16"
  19. 5/8"
  20. 3/4"
  21. 7/8"
  22. 1.0 mm
  23. 1"
  24. 1-1/8"
  25. 1-1/4"
  26. 1-1/2"
  27. 1.5 mm
  28. 2.0 mm
  29. 2"
  30. 2.2 mm
  31. 2-1/4"
  32. 2-1/2"
  33. 3.0 mm
  34. 3.2 mm
  35. 4.0 mm
  36. 4.2 mm
  37. 5.0 mm
  38. 5.2 mm
  39. 6.0 mm
  40. 6.2 mm
  41. 8.0 mm
  42. 8.2 mm
  43. 10.0 mm
  44. 10.3 mm
  45. 12.0 mm
  46. 12.3 mm
  47. 15.0 mm
  48. 15.3 mm
  49. 16.0 mm
  50. 16.3 mm
  51. 18.0 mm
  52. 18.3 mm
  53. 20.0 mm
  54. 20.3 mm
  55. 25.0 mm
  56. 25.3 mm
  57. 30.0 mm
  58. 30.3 mm
  59. 32.0 mm
  60. 32.3 mm
Units of Measurement
  1. Imperial
  2. Metric
Available Sizes
  1. Oversize
  2. Regular

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Items 1-36 of 4496

Set Descending Direction
  1. O1 - 1/16" x 1/2" x 18" reg.
    O1 - 1/16" x 1/2" x 18" reg.
    Thickness: 1/16"
    Width: 1/2"
    Length: 18"
    Size: Regular
    $7.10
  2. O1 - 1/8" x 1/4" x 18" reg.
    O1 - 1/8" x 1/4" x 18" reg.
    Thickness: 1/8"
    Width: 1/4"
    Length: 18"
    Size: Regular
    $7.65
  3. O1 - 1/8" x 5/16" x 18" reg.
    O1 - 1/8" x 5/16" x 18" reg.
    Thickness: 1/8"
    Width: 5/16"
    Length: 18"
    Size: Regular
    $8.20
  4. O1 - 1/16" x 5/8" x 18" reg.
    O1 - 1/16" x 5/8" x 18" reg.
    Thickness: 1/16"
    Width: 5/8"
    Length: 18"
    Size: Regular
    $8.20
  5. O1 - 1/8" x 3/8" x 18" reg.
    O1 - 1/8" x 3/8" x 18" reg.
    Thickness: 1/8"
    Width: 3/8"
    Length: 18"
    Size: Regular
    $8.75
  6. O1 - 1/8" x 1/2" x 18" O/S
    O1 - 1/8" x 1/2" x 18" O/S
    Thickness: 1/8"
    Width: 1/2"
    Length: 18"
    Size: Oversize
    $9.30
  7. O1 - 1/16" x 3/4" x 18" reg.
    O1 - 1/16" x 3/4" x 18" reg.
    Thickness: 1/16"
    Width: 3/4"
    Length: 18"
    Size: Regular
    $9.30
  8. O1 - 3/32" x 1/2" x 18" reg.
    O1 - 3/32" x 1/2" x 18" reg.
    Thickness: 3/32"
    Width: 1/2"
    Length: 18"
    Size: Regular
    $9.85
  9. O1 - 1/8" x 1/2" x 18" reg.
    O1 - 1/8" x 1/2" x 18" reg.
    Thickness: 1/8"
    Width: 1/2"
    Length: 18"
    Size: Regular
    $9.85
  10. O1 - 3/16" x 1/4" x 18" reg.
    O1 - 3/16" x 1/4" x 18" reg.
    Thickness: 3/16"
    Width: 1/4"
    Length: 18"
    Size: Regular
    $9.85
  11. O1 - 5/64" x 1/2" x 18" reg.
    O1 - 5/64" x 1/2" x 18" reg.
    Thickness: 5/64"
    Width: 1/2"
    Length: 18"
    Size: Regular
    $9.85
  12. O1 - 3/16" x 5/16" x 18" reg.
    O1 - 3/16" x 5/16" x 18" reg.
    Thickness: 3/16"
    Width: 5/16"
    Length: 18"
    Size: Regular
    $10.40
  13. O1 - 3/64" x 1/2" x 18" reg.
    O1 - 3/64" x 1/2" x 18" reg.
    Thickness: 3/64"
    Width: 1/2"
    Length: 18"
    Size: Regular
    $10.40
  14. O1 - 1/8" x 5/8" x 18" reg.
    O1 - 1/8" x 5/8" x 18" reg.
    Thickness: 1/8"
    Width: 5/8"
    Length: 18"
    Size: Regular
    $10.95
  15. A2 - 1/8" x 1/4" x 18" O/S
    A2 - 1/8" x 1/4" x 18" O/S
    Thickness: 1/8"
    Width: 1/4"
    Length: 18"
    Size: Oversize
    $10.95
  16. O1 - 3/16" x 3/8" x 18" reg.
    O1 - 3/16" x 3/8" x 18" reg.
    Thickness: 3/16"
    Width: 3/8"
    Length: 18"
    Size: Regular
    $10.95
  17. O1 - 9/64" x 1/2" x 18" reg.
    O1 - 9/64" x 1/2" x 18" reg.
    Thickness: 9/64"
    Width: 1/2"
    Length: 18"
    Size: Regular
    $11.50
  18. O1 - 7/64" x 1/2" x 18" reg.
    O1 - 7/64" x 1/2" x 18" reg.
    Thickness: 7/64"
    Width: 1/2"
    Length: 18"
    Size: Regular
    $11.50
  19. O1 - 5/32" x 1/2" x 18" reg.
    O1 - 5/32" x 1/2" x 18" reg.
    Thickness: 5/32"
    Width: 1/2"
    Length: 18"
    Size: Regular
    $11.50
  20. O1 - 1/8" x 3/4" x 18" O/S
    O1 - 1/8" x 3/4" x 18" O/S
    Thickness: 1/8"
    Width: 3/4"
    Length: 18"
    Size: Oversize
    $11.50
  21. O1 - 1/16" x 1" x 18" reg.
    O1 - 1/16" x 1" x 18" reg.
    Thickness: 1/16"
    Width: 1"
    Length: 18"
    Size: Regular
    $11.50
  22. 1018 / A36 - 1/16" x 1/2" x 24" reg.
    1018 / A36 - 1/16" x 1/2" x 24" reg.
    Thickness: 1/16"
    Width: 1/2"
    Length: 24"
    Size: Regular
    $11.90
  23. O1 - 1/8" x 3/4" x 18" reg.
    O1 - 1/8" x 3/4" x 18" reg.
    Thickness: 1/8"
    Width: 3/4"
    Length: 18"
    Size: Regular
    $12.05
  24. O1 - 1/32" x 1/2" x 18" reg.
    O1 - 1/32" x 1/2" x 18" reg.
    Thickness: 1/32"
    Width: 1/2"
    Length: 18"
    Size: Regular
    $12.05
  25. O1 - 3/16" x 1/2" x 18" reg.
    O1 - 3/16" x 1/2" x 18" reg.
    Thickness: 3/16"
    Width: 1/2"
    Length: 18"
    Size: Regular
    $12.05
  26. O1 - 5/64" x 3/4" x 18" reg.
    O1 - 5/64" x 3/4" x 18" reg.
    Thickness: 5/64"
    Width: 3/4"
    Length: 18"
    Size: Regular
    $12.05
  27. O1 - 3/16" x 1/2" x 18" O/S
    O1 - 3/16" x 1/2" x 18" O/S
    Thickness: 3/16"
    Width: 1/2"
    Length: 18"
    Size: Oversize
    $12.05
  28. O1 - 3/32" x 3/4" x 18" reg.
    O1 - 3/32" x 3/4" x 18" reg.
    Thickness: 3/32"
    Width: 3/4"
    Length: 18"
    Size: Regular
    $12.05
  29. A2 - 1/8" x 3/8" x 18" O/S
    A2 - 1/8" x 3/8" x 18" O/S
    Thickness: 1/8"
    Width: 3/8"
    Length: 18"
    Size: Oversize
    $12.60
  30. O1 - 1/16" x 3/8" x 18" reg.
    O1 - 1/16" x 3/8" x 18" reg.
    Thickness: 1/16"
    Width: 3/8"
    Length: 18"
    Size: Regular
    $12.60
  31. O1 - 1/16" x 1/2" x 36" reg.
    O1 - 1/16" x 1/2" x 36" reg.
    Thickness: 1/16"
    Width: 1/2"
    Length: 36"
    Size: Regular
    $12.90
  32. O1 - 1.0 x 10.0 x 500 mm
    O1 - 1.0 x 10.0 x 500 mm
    Thickness: 1.0 mm
    Width: 10.0 mm
    Length: 500 mm
    Size: Regular
    $12.94
  33. O1 - 9/64" x 3/4" x 18" reg.
    O1 - 9/64" x 3/4" x 18" reg.
    Thickness: 9/64"
    Width: 3/4"
    Length: 18"
    Size: Regular
    $13.15
  34. O1 - 1/4" x 3/8" x 18" reg.
    O1 - 1/4" x 3/8" x 18" reg.
    Thickness: 1/4"
    Width: 3/8"
    Length: 18"
    Size: Regular
    $13.15
  35. O1 - 1/16" x 1-1/4" x 18" reg.
    O1 - 1/16" x 1-1/4" x 18" reg.
    Thickness: 1/16"
    Width: 1-1/4"
    Length: 18"
    Size: Regular
    $13.15
  36. O1 - 3/16" x 5/8" x 18" reg.
    O1 - 3/16" x 5/8" x 18" reg.
    Thickness: 3/16"
    Width: 5/8"
    Length: 18"
    Size: Regular
    $13.70
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precision-ground-flat-stock-usage

WHAT IS PRECISION GROUND FLAT STOCK USED FOR?

Precision-ground flat stock steel is used in the manufacturing of precision tools for metalworking and is applied in many industries due to its exceptionally flat and precisely defined surface quality.

Here are some of the main areas of application:

• Toolmaking
• Mechanical Engineering
• Automotive Industry
• Electrical Industry
• Medical Engineering
• Aviation and aerospace
• Measurement and Control Technology

HOW IS PRECISION GROUND FLAT STOCK (PGFS) MADE?

To produce precision-ground flat steel, a piece of the needed material is cut to a specific length from a machined semi-finished material. Subsequently, the workpiece is surface ground to the required tolerances. Precise grinding of the surface ensures that there are no defects or carburization on the material.

• Raw Material Selection
• Rolling Process
• Heat Treatment
• Precision Grinding
• Surface Grinding
• Quality Control
how-is-precision-ground-flat-stock-made

DIFFERENCE BETWEEN PRECISION GROUND FLAT STEEL AND FLAT BAR

Precision ground flat steel and conventional flat steel primarily differ in their surface finish and tolerances.

Surface Finish:

Precision Ground Flat Steel: Precision ground flat steel undergoes a specialized grinding process to work on the surface of the steel. This process results in an extremely smooth and uniform surface, often with better quality and aesthetics. This smooth surface is particularly suitable for applications where precision or an appealing appearance is required. To ensure that the ground flat surface is not damaged, it should be carefully stored and handled.

Flat Steel: Conventional flat steel has more industrial applications and may have a rough or uneven surface that results directly from the manufacturing process. This surface finish may be less precise and may require additional processing steps to make it suitable for specific applications.

Tolerances:

Precision Ground Flat Steel: This type of steel is typically manufactured with very tight tolerances. This means that the dimensions and shapes of precision ground flat steel closely match the specified requirements. This is especially important in applications where precision and dimensional accuracy are crucial.

Flat Steel: Conventional flat steel can have larger tolerances, meaning that dimensions and shapes may vary more. This may be acceptable in some applications, but in other cases, it may require additional processing to achieve the desired tolerances.
As a Regular and Oversize Ground Flat Stock Steel Supplier for Imperial and Metric Steel Sizes, we not only provide standard stock products but also offer solutions tailored specifically to your needs, to serve the technical and commercial requirements of our customers.

Regular and Oversize Ground Flat Steel is often subjected to extremely high stresses, and no single steel offers features such as maximum wear resistance, hardness, and toughness. Our steel portfolio includes the most common steel dimensions and steel grades, to offer an optimal combination of properties and desired size for a specific application.

It can be very frustrating to search for the optimal imperial and metric Ground Flat Stock Steel grade for all your applications. We’ve got the perfect solution for this.