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Hole for 5/16" Bolts

Spacers for 5/16" bolts, Outer Diameters of 3/8, 1/2, 5/8 3/4 with various lengths from 1/16 to 1-1/2

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  1. Aluminum Spacer 3/4 OD x 5/16 or 8 mm ID x 1/4 Long Aluminum Metal Spacers

    Aluminum Spacer 3/4 OD x .319 ID x 1/4 Long

    $2.48 As low as: $0.26

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  2. Aluminum Spacer 7/16 OD x 5/16 or 8mm x 1/4 Long-Black Anodized

    Aluminum Spacer 7/16 OD x .319 ID x 1/4 Long-Black Anodized

    $2.45 As low as: $0.32

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  3. Aluminum Spacer 1/2 OD x 8mm or 5/16 ID x 1/4 Long

    Aluminum Spacer 1/2 OD x .319 ID x 1/4 Long

    $1.15 As low as: $0.12

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  4. Aluminum Spacer 5/8 OD x 5/16 or 8mm ID x 1/4 Long

    Aluminum Spacer 5/8 OD x .319 ID x 1/4 Long

    $1.29 As low as: $0.18

    Out of stock

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  5. Aluminum Spacer 3/8 OD x 5/16 or 8mm ID x 1/4 Long

    Aluminum Spacer 3/8 OD x .319 ID x 1/4 Long

    $0.53 As low as: $0.073

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  6. Aluminum Spacer 5/8 OD x 5/16 or 8mm ID x .255 Long

    Aluminum Spacer 5/8 OD x .319 ID x .255 Long

    $1.86 As low as: $0.36

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  7. Aluminum Spacer 1/2 OD x .333 ID x .260 Long

    Aluminum Spacer 1/2 OD x .333 ID x .260 Long

    $1.22 As low as: $0.22

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  8. Aluminum Spacer 1/2 OD x 5/16 or 8mm ID x 17/64 Long

    Aluminum Spacer 1/2 OD x .319 ID x 17/64 Long

    $1.50 As low as: $0.137

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  9. Aluminum Spacer 7/16 OD x 5/16 or 8mm ID x 17/64 Long

    Aluminum Spacer 7/16 OD x .319 ID x 17/64 Long

    $1.50 As low as: $0.137

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  10. Aluminum Spacer 5/8 OD x 5/16 or 8mm ID x 9/32 Long

    Aluminum Spacer 5/8 OD x .319 ID x 9/32 Long

    $1.70 As low as: $0.146

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  11. Aluminum Spacer 7/16 OD x 5/16 or 8mm ID x 9/32 Long

    Aluminum Spacer 7/16 OD x .319 ID x 9/32 Long

    $1.35 As low as: $0.131

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  12. Aluminum Spacer 1/2 OD x 5/16 or 8mm ID x 9/32 Long

    Aluminum Spacer 1/2 OD x .319 ID x 9/32 Long

    $1.35 As low as: $0.131

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  13. Aluminum Spacer 3/4 OD x 5/16 or 8 mm ID x 9/32 Long Aluminum Metal Spacers

    Aluminum Spacer 3/4 OD x .319 ID x 9/32 Long

    $3.27 As low as: $0.30

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  14. Aluminum Spacer 3/4 OD x 5/16 or 8 mm ID x .288 Long Aluminum Metal Spacers

    Aluminum Spacer 3/4 OD x .319 ID x .288 Long

    $3.66 As low as: $0.43

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  15. Aluminum Spacer 7/16 OD x 5/16 or 8mm ID x 19/64 Long

    Aluminum Spacer 7/16 OD x .319 ID x 19/64 Long

    $1.54 As low as: $0.141

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  16. Aluminum Spacer 1/2 OD x 5/16 or 8mm ID x 19/64 Long

    Aluminum Spacer 1/2 OD x .319 ID x 19/64 Long

    $1.54 As low as: $0.141

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  17. Aluminum Spacer 1/2 OD x .333 ID x 19/64 Long

    Aluminum Spacer 1/2 OD x .333 ID x 19/64 Long

    $1.59 As low as: $0.38

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  18. Aluminum Spacer 3/8 OD x .319 ID x .300 Long

    Aluminum Spacer 3/8 OD x .319 ID x .300 Long

    $1.10 As low as: $0.141

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  19. Aluminum Spacer 1/2 OD x .333 ID x 1/4 Long

    Aluminum Spacer 1/2 OD x .333 ID x 1/4 Long

    $1.80 As low as: $0.13

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  20. Aluminum Spacer 1/2 OD x .333 ID x 5/16 Long

    Aluminum Spacer 1/2 OD x .333 ID x 5/16 Long

    $3.31 As low as: $0.16

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  21. Aluminum Spacer 3/8 OD x 5/16 or 8mm ID x 5/16 Long

    Aluminum Spacer 3/8 OD x .319 ID x 5/16 Long

    $0.87 As low as: $0.095

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  22. Aluminum Spacer 5/8 OD x 5/16 or 8mm ID x 5/16 Long

    Aluminum Spacer 5/8 OD x .319 ID x 5/16 Long

    $1.35 As low as: $0.149

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  23. Aluminum Spacer 1/2 OD x .319 ID x 5/16 Long

    Aluminum Spacer 1/2 OD x .319 ID x 5/16 Long

    $1.22 As low as: $0.126

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  24. Aluminum Spacer 3/4 OD x 5/16 or 8 mm ID x 5/16 Long Aluminum Metal Spacers

    Aluminum Spacer 3/4 OD x .319 ID x 5/16 Long

    $2.59 As low as: $0.27

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  25. Aluminum Spacer 7/16 OD x 5/16 or 8mm ID x 5/16 Long

    Aluminum Spacer 7/16 OD x .319 ID x 5/16 Long

    $1.22 As low as: $0.126

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Shopping Options

Outer Diameter
  1. 3/8 in.----------9.53mm (4)
  2. 7/16 In.--------11.1mm (46)
  3. .455 in.--------11.56mm (1)
  4. 1/2 in.---------12.7mm (70)
  5. 5/8 in.---------15.9mm (50)
  6. 3/4 in.---------19.05mm (41)
Bolt Hole Size / Inner DIameter
  1. For 5/16" or 8mm Bolts (193)
  2. For 5/16 or 8mm Loose fit (14)
  3. For 3/8" Bolts (1)
Length Decimal/Fraction/Metric
  1. 0.0625 in.---1/16--1.59mm (1)
  2. 0.078 in.----5/64---1.97mm (2)
  3. 0.094 in.----3/32---2.38mm (2)
  4. 0.1095 in.---7/64---2.77mm (1)
  5. 0.118 in.-------------3mm (2)
  6. 0.125 in.-----1/8----3.18mm (5)
  7. 0.138 in.-------------3.5mm (1)
  8. 0.141 in.----9/64---3.58mm (5)
  9. 0.156 in.----5/32---3.96mm (5)
  10. 0.172 in.---11/64---4.37mm (4)
  11. 0.1875 in.---3/16---4.76mm (7)
  12. 0.197 in.-------------5mm (1)
  13. 0.203 in.---13/64---5.16mm (3)
  14. 0.208 in.-------------5.28mm (1)
  15. 0.219 in.----7/32----5.56mm (4)
  16. 0.225 in.-------------5.72mm (1)
  17. 0.2345 in.--15/64--5.95mm (3)
  18. 0.250 in.-----1/4----6.35mm (7)
  19. 0.255 in.-------------6.48mm (1)
  20. 0.260 in.----------- (1)
  21. 0.2655 in.--17/64--6.75mm (2)
  22. 0.281 in.----9/32---7.14mm (4)
  23. 0.288 in.-------------7.32mm (1)
  24. 0.297 in.---19/64---7.54mm (3)
  25. 0.300 in.-------------7.62mm (1)
  26. 0.3125 in.---5/16---7.94mm (7)
  27. 0.328 in.---21/64---8.33mm (3)
  28. 0.344 in.---11/32---8.74mm (5)
  29. 0.354 in.-------------9mm (1)
  30. 0.3595 in.--23/64--9.13mm (1)
  31. 0.375 in.-----3/8----9.53mm (6)
  32. 0.380 in.-------------9.65mm (1)
  33. 0.394 in.-------------10mm (2)
  34. 0.402 in.-------------10.21mm (2)
  35. 0.403 in.-------------10.24mm (1)
  36. 0.405 in.-------------10.28mm (1)
  37. 0.406 in.---13/32---10.31mm (4)
  38. 0.410 in.-------------10.41mm (1)
  39. 0.4375 in.---7/16---11.11mm (5)
  40. 0.450 in.-------------11.43mm (1)
  41. 0.453 in.---29/64---11.5mm (1)
  42. 0.469 in.---15/32---11.91mm (5)
  43. 0.475 in.----------- (1)
  44. 0.500 in.-----1/2----12.7mm (9)
  45. 0.505 in.-------------12.83mm (1)
  46. 0.531 in.---17/32---13.49mm (4)
  47. 0.551 in.-------------14mm (1)
  48. 0.555 in.-------------14.1mm (1)
  49. 0.560 in.-------------14.22mm (1)
  50. 0.5625 in.---9/16---14.29mm (6)
  51. 0.571 in.-------------14.5mm (1)
  52. 0.625 in.-----5/8----15.88mm (5)
  53. 0.672 in.---43/64---17.07mm (1)
  54. 0.6875 in.--11/16--17.46mm- (4)
  55. 0.750 in.----3/4-----19.05mm (7)
  56. 0.788 in.-------------20mm (1)
  57. 0.8125 in.--13/16--20.64mm (3)
  58. 0.875 in.----7/8-----22.23mm (5)
  59. 0.906 in.---29/32---23.02mm (1)
  60. 0.9375 in.--15/16--23.81mm (4)
  61. 0.960 in.-------------24.39mm (1)
  62. 1 inch---------1-----25.4mm (5)
  63. 1.005 in.-------------25.53mm (1)
  64. 1.010 in.-------------25.65mm (1)
  65. 1.024 in.-------------26mm (1)
  66. 1.0625 in.-1-1/16--27mm- (3)
  67. 1.125 in.---1-1/8---28.58mm (3)
  68. 1.156 in.--1-5/32---29.36mm (2)
  69. 1.181 in.-------------30mm (3)
  70. 1.1875 in.--1-3/16-30.16mm (3)
  71. 1.250 in.---1-1/4---31.75mm (4)
  72. 1.3125 in.-1-5/16--33.34mm (3)
  73. 1.375 in.---1-3/8---34.93mm (3)
  74. 1.4375 in.--1-7/16-36.51mm (3)
  75. 1.500 in.---1-1/2---38.1mm (4)
  76. 1.5625 in.-1-9/16--39.7mm (2)
Metal Alloy
  1. Aluminum 6061-T6 (210)
  2. Steel (3)
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