1/2 (12.7mm) Outer Diameter

Shopping Options

Outer Diameter

1. 7/16 In.--------11.1mm (45)
2. 1/2 in.---------12.7mm (61)

Bolt Hole Size / Inner DIameter

1. For #12 or 5mm Screws (1)
2. For 6mm or #12 Screws (3)
3. For 1/4" or 6mm Bolts (101)
4. For 5/16 or 8mm Loose fit (1)

Length Decimal/Fraction/Metric

1. 0.100 in.-------------2.54mm (1)
2. 0.1095 in.---7/64---2.77mm (1)
3. 0.118 in.-------------3mm (1)
4. 0.125 in.-----1/8----3.18mm (4)
5. 0.141 in.----9/64---3.58mm (2)
6. 0.156 in.----5/32---3.96mm (3)
7. 0.1575 in.-----------4mm (1)
8. 0.172 in.---11/64---4.37mm (2)
9. 0.1875 in.---3/16---4.76mm (3)
10. 0.203 in.---13/64---5.16mm (2)
11. 0.219 in.----7/32----5.56mm (2)
12. 0.2345 in.--15/64--5.95mm (2)
13. 0.250 in.-----1/4----6.35mm (3)
14. 0.2655 in.--17/64--6.75mm (2)
15. 0.281 in.----9/32---7.14mm (2)
16. 0.297 in.---19/64---7.54mm (3)
17. 0.3125 in.---5/16---7.94mm (3)
18. 0.328 in.---21/64---8.33mm (2)
19. 0.344 in.---11/32---8.74mm (2)
20. 0.375 in.-----3/8----9.53mm (3)
21. 0.406 in.---13/32---10.31mm (3)
22. 0.4375 in.---7/16---11.11mm (3)
23. 0.469 in.---15/32---11.91mm (2)
24. 0.500 in.-----1/2----12.7mm (5)
25. 0.531 in.---17/32---13.49mm (2)
26. 0.5625 in.---9/16---14.29mm (2)
27. 0.625 in.-----5/8----15.88mm (3)
28. 0.6875 in.--11/16--17.46mm- (2)
29. 0.748 in.-------------19mm (1)
30. 0.750 in.----3/4-----19.05mm (5)
31. 0.8125 in.--13/16--20.64mm (1)
32. 0.875 in.----7/8-----22.23mm (3)
33. 0.906 in.---29/32---23.02mm (2)
34. 0.9375 in.--15/16--23.81mm (2)
35. 1 inch---------1-----25.4mm (5)
36. 1.010 in.-------------25.65mm (1)
37. 1.024 in.-------------26mm (2)
38. 1.0625 in.-1-1/16--27mm- (2)
39. 1.125 in.---1-1/8---28.58mm (3)
40. 1.181 in.-------------30mm (2)
41. 1.1875 in.--1-3/16-30.16mm (2)
42. 1.250 in.---1-1/4---31.75mm (3)
43. 1.3125 in.-1-5/16--33.34mm (1)
44. 1.375 in.---1-3/8---34.93mm (1)
45. 1.4375 in.--1-7/16-36.51mm (1)
46. 1.4845 in.-1-31/64-37.70mm (1)
47. 1.500 in.---1-1/2---38.1mm (1)
48. 1.654 in.-------------42mm (1)

Metal Alloy

1. Aluminum 6061-T6 (99)
2. Steel (1)
3. Steel (zinc plated) (1)
4. Brass (4)
5. Stainless Steel 303/18-8 (1)