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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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Types of Steel
  1. Case Hardening Steel 30
  2. Heat-Treatable Steel 302
  3. Stainless Steel 88
  4. Tool Steel 4076
Specifications
  1. Precision Ground Flat Stock Metric, oversize 1038
  2. Precision Ground Flat Stock Metric, regular 541
  3. Precision Ground Flat Stock, oversize 878
  4. Precision Ground Flat Stock, regular 2039
Steel Grade
  1. 1018 / A36 241
  2. 4140 PH / 4142 PH 302
  3. 1045 199
  4. 420 28
  5. 420 LC 37
  6. 420FM 60
  7. 440B 60
  8. 5115 30
  9. 5120 30
  10. A2 1081
  11. D2 733
  12. O1 1584
  13. P20 PH 111
Width
  1. 1/8" 2
  2. 5/32" 2
  3. 3/16" 11
  4. 7/32" 2
  5. 1/4" 29
  6. 9/32" 2
  7. 5/16" 29
  8. 3/8" 49
  9. 7/16" 3
  10. 1/2" 145
  11. 9/16" 2
  12. 5/8" 73
  13. 3/4" 177
  14. 7/8" 33
  15. 1" 203
  16. 1-1/8" 3
  17. 1-1/4" 202
  18. 1-1/2" 217
  19. 1-3/4" 90
  20. 2" 226
  21. 2-1/4" 1
  22. 2-1/2" 206
  23. 3" 219
  24. 3-1/2" 105
  25. 4.0 mm 2
  26. 4" 219
  27. 4-1/2" 16
  28. 5.0 mm 2
  29. 5" 163
  30. 5-1/2" 4
  31. 6.0 mm 2
  32. 6" 199
  33. 6.2 mm 2
  34. 7" 37
  35. 8.0 mm 2
  36. 8" 97
  37. 8.2 mm 4
  38. 9" 9
  39. 10.0 mm 18
  40. 10" 75
  41. 10.3 mm 31
  42. 12.0 mm 20
  43. 12" 59
  44. 12.3 mm 23
  45. 14" 8
  46. 15.0 mm 22
  47. 15.3 mm 40
  48. 16.0 mm 4
  49. 16.3 mm 7
  50. 18.0 mm 2
  51. 18.3 mm 2
  52. 20.0 mm 40
  53. 20.3 mm 94
  54. 25.0 mm 42
  55. 25.3 mm 116
  56. 30.0 mm 43
  57. 30.3 mm 111
  58. 32.0 mm 18
  59. 32.3 mm 77
  60. 35.0 mm 23
  61. 35.3 mm 23
  62. 40.0 mm 41
  63. 40.3 mm 100
  64. 50.0 mm 35
  65. 50.3 mm 81
  66. 60.0 mm 32
  67. 60.3 mm 69
  68. 63.0 mm 11
  69. 63.3 mm 37
  70. 70.0 mm 29
  71. 70.3 mm 38
  72. 80.0 mm 26
  73. 80.3 mm 46
  74. 90.0 mm 9
  75. 90.3 mm 5
  76. 100.0 mm 24
  77. 100.3 mm 37
  78. 120.0 mm 16
  79. 120.3 mm 9
  80. 125.0 mm 16
  81. 125.3 mm 24
  82. 140.0 mm 2
  83. 150.0 mm 15
  84. 150.3 mm 17
  85. 160.0 mm 12
  86. 160.3 mm 9
  87. 175.0 mm 1
  88. 175.3 mm 9
  89. 180.0 mm 10
  90. 180.3 mm 7
  91. 200.0 mm 10
  92. 200.3 mm 10
  93. 250.0 mm 6
  94. 250.3 mm 6
  95. 300.0 mm 6
  96. 300.3 mm 4
Length
  1. 18" 1338
  2. 24" 241
  3. 36" 1338
  4. 500 mm 881
  5. 1,000 mm 698
Thickness
  1. 1/32" 48
  2. 3/64" 38
  3. 1/16" 109
  4. 5/64" 32
  5. 3/32" 105
  6. 7/64" 32
  7. 1/8" 241
  8. 9/64" 16
  9. 5/32" 153
  10. 3/16" 254
  11. 7/32" 40
  12. 1/4" 262
  13. 9/32" 20
  14. 5/16" 244
  15. 3/8" 244
  16. 7/16" 23
  17. 1/2" 237
  18. 9/16" 18
  19. 5/8" 183
  20. 3/4" 188
  21. 7/8" 98
  22. 1.0 mm 21
  23. 1" 169
  24. 1-1/8" 13
  25. 1-1/4" 62
  26. 1-1/2" 59
  27. 1.5 mm 21
  28. 2.0 mm 42
  29. 2" 25
  30. 2.2 mm 81
  31. 2-1/4" 1
  32. 2-1/2" 3
  33. 3.0 mm 40
  34. 3.2 mm 87
  35. 4.0 mm 67
  36. 4.2 mm 88
  37. 5.0 mm 62
  38. 5.2 mm 73
  39. 6.0 mm 66
  40. 6.2 mm 122
  41. 8.0 mm 54
  42. 8.2 mm 148
  43. 10.0 mm 46
  44. 10.3 mm 121
  45. 12.0 mm 40
  46. 12.3 mm 87
  47. 15.0 mm 31
  48. 15.3 mm 82
  49. 16.0 mm 15
  50. 16.3 mm 58
  51. 18.0 mm 2
  52. 18.3 mm 2
  53. 20.0 mm 20
  54. 20.3 mm 56
  55. 25.0 mm 8
  56. 25.3 mm 19
  57. 30.0 mm 5
  58. 30.3 mm 11
  59. 32.0 mm 1
  60. 32.3 mm 3
Units of Measurement
  1. Imperial 2917
  2. Metric 1579
Available Sizes
  1. Oversize 1916
  2. Regular 2580

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  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 - 1/16" 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
  4. 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
  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 - 3/16" 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
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  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. 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
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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
  21. 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
  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 - 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
  24. 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
  25. 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
  26. 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
  27. 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
  28. 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
  29. 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
  30. 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
  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 - 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
  34. 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
  35. 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
  36. O1 - 3/64" x 3/4" x 18" reg.
    O1 - 3/64" x 3/4" x 18" reg.
    Thickness: 3/64"
    Width: 3/4"
    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.