Hole for 3/8" Bolts

Shopping Options

Outer Diameter

1. 1/2 in.---------12.7mm (41)
2. 5/8 in.---------15.9mm (82)
3. 3/4 in.---------19.05mm (72)

Bolt Hole Size / Inner DIameter

1. For 5/16 or 8mm Loose fit (1)
2. .374 in (9.5mm) (4)
3. For 3/8" Bolts (112)
4. For 10mm or 3/8" Bolts (73)
5. For 7/16" Bolts (1)
6. For 12mm or 7/16" Bolts (2)
7. For 1/2" or 12mm Bolts (1)

Length Decimal/Fraction/Metric

1. 0.100 in.-------------2.54mm (1)
2. 0.118 in.-------------3mm (1)
3. 0.125 in.-----1/8----3.18mm (3)
4. 0.141 in.----9/64---3.58mm (3)
5. 0.156 in.----5/32---3.96mm (4)
6. 0.1575 in.-----------4mm (2)
7. 0.172 in.---11/64---4.37mm (2)
8. 0.1875 in.---3/16---4.76mm (3)
9. 0.197 in.-------------5mm (3)
10. 0.210 in.-------------5.33mm (1)
11. 0.219 in.----7/32----5.56mm (2)
12. 0.2345 in.--15/64--5.95mm (1)
13. 0.236 in.-------------6mm (3)
14. 0.250 in.-----1/4----6.35mm (5)
15. 0.2655 in.--17/64--6.75mm (1)
16. 0.2755 in.-----------7mm (2)
17. 0.281 in.----9/32---7.14mm (2)
18. 0.288 in.-------------7.32mm (1)
19. 0.297 in.---19/64---7.54mm (2)
20. 0.3125 in.---5/16---7.94mm (4)
21. 0.315 in.-------------8mm (2)
22. 0.328 in.---21/64---8.33mm (1)
23. 0.344 in.---11/32---8.74mm (3)
24. 0.354 in.-------------9mm (2)
25. 0.375 in.-----3/8----9.53mm (5)
26. 0.380 in.-------------9.65mm (1)
27. 0.394 in.-------------10mm (4)
28. 0.402 in.----------- (1)
29. 0.406 in.---13/32---10.31mm (3)
30. 0.4375 in.---7/16---11.11mm (3)
31. 0.469 in.---15/32---11.91mm (3)
32. 0.472 in.-------------12mm (3)
33. 0.4844 in.--31/64--12.3mm (1)
34. 0.500 in.-----1/2----12.7mm (5)
35. 0.500 in.-----1/2----12.7mm (2)
36. 0.510 in.-------------12.95mm (1)
37. 0.531 in.---17/32---13.49mm (3)
38. 0.551 in.-------------14mm (3)
39. 0.5625 in.---9/16---14.29mm (3)
40. 0.585 in.----------- (1)
41. 0.591 in.-------------15mm (3)
42. 0.600 in.-------------15.24mm (1)
43. 0.601 in.----------- (1)
44. 0.625 in.-----5/8----15.88mm (3)
45. 0.630 in.-------------16mm (2)
46. 0.669 in.-------------17mm (3)
47. 0.672 in.---43/64---17.07mm (1)
48. 0.6875 in.--11/16--17.46mm- (2)
49. 0.748 in.-------------19mm (2)
50. 0.750 in.----3/4-----19.05mm (3)
51. 0.788 in.-------------20mm (2)
52. 0.8125 in.--13/16--20.64mm (4)
53. 0.827 in.-------------21mm (1)
54. 0.853 in.----------- (1)
55. 0.866 in.-------------22mm (3)
56. 0.875 in.----7/8-----22.23mm (3)
57. 0.880 in.------------ (1)
58. 0.9055 in.------------23mm (1)
59. 0.906 in.---29/32---23.02mm (1)
60. 0.9375 in.--15/16--23.81mm (5)
61. 0.945 in.-------------24mm (1)
62. 0.984 in.-------------25mm (2)
63. 1 inch---------1-----25.4mm (5)
64. 1.0625 in.-1-1/16--27mm- (3)
65. 1.063 in.-------------27mm (4)
66. 1.103 in.-------------28mm (1)
67. 1.125 in.---1-1/8---28.58mm (3)
68. 1.130 in.-------------28.70mm (1)
69. 1.165 in.-------------29.59mm (1)
70. 1.181 in.-------------30mm (5)
71. 1.1875 in.--1-3/16-30.16mm (3)
72. 1.200 in------------ (1)
73. 1.250 in.---1-1/4---31.75mm (3)
74. 1.260 in.-------------32mm (1)
75. 1.299 in.-------------33mm (3)
76. 1.3125 in.-1-5/16--33.34mm (3)
77. 1.375 in.---1-3/8---34.93mm (3)
78. 1.378 in.-------------35mm (1)
79. 1.400 in.-------------35.55mm (2)
80. 1.418 in.-------------36mm (1)
81. 1.4375 in.--1-7/16-36.51mm (3)
82. 1.497 in.-------------38mm (3)
83. 1.500 in.---1-1/2---38.1mm (3)

Metal Alloy

1. Aluminum 6061-T6 (193)
2. Steel (3)