1/4 (6.35mm) Outer Diameter

Shopping Options

Bolt Hole Size / Inner DIameter

1. For #8 or 4mm Screws (39)

Length Decimal/Fraction/Metric

1. 0.125 in.-----1/8----3.18mm (3)
2. 0.141 in.----9/64---3.58mm (1)
3. 0.156 in.----5/32---3.96mm (1)
4. 0.172 in.---11/64---4.37mm (1)
5. 0.1875 in.---3/16---4.76mm (1)
6. 0.203 in.---13/64---5.16mm (1)
7. 0.219 in.----7/32----5.56mm (1)
8. 0.225 in.-------------5.72mm (1)
9. 0.2345 in.--15/64--5.95mm (1)
10. 0.250 in.-----1/4----6.35mm (3)
11. 0.2655 in.--17/64--6.75mm (1)
12. 0.281 in.----9/32---7.14mm (1)
13. 0.297 in.---19/64---7.54mm (1)
14. 0.3125 in.---5/16---7.94mm (2)
15. 0.328 in.---21/64---8.33mm (1)
16. 0.344 in.---11/32---8.74mm (1)
17. 0.375 in.-----3/8----9.53mm (1)
18. 0.406 in.---13/32---10.31mm (1)
19. 0.4375 in.---7/16---11.11mm (1)
20. 0.469 in.---15/32---11.91mm (1)
21. 0.4844 in.--31/64--12.3mm (1)
22. 0.500 in.-----1/2----12.7mm (2)
23. 0.531 in.---17/32---13.49mm (1)
24. 0.547 in.---35/64---13.89mm (1)
25. 0.5625 in.---9/16---14.29mm (1)
26. 0.578 in.--37/64--14.68mm (1)
27. 0.625 in.-----5/8----15.88mm (1)
28. 0.6875 in.--11/16--17.46mm- (1)
29. 0.719 in.---23/32---18.26mm (1)
30. 0.750 in.----3/4-----19.05mm (1)
31. 0.800 in.----------- (1)
32. 0.8125 in.--13/16--20.64mm (1)
33. 0.844 in.---27/32---21.43mm (1)
34. 0.9375 in.--15/16--23.81mm (1)
35. 1 inch---------1-----25.4mm (1)

Metal Alloy

1. Aluminum 6061-T6 (38)
2. Aluminum 2011-T3 (1)
3. Brass (2)
4. Nylon (1)