1/4 (6.35mm) Outer Diameter

Shopping Options

Outer Diameter

1. 7/32 in.--------5.56mm (2)
2. 1/4 in.----------6.35mm (42)

Bolt Hole Size / Inner DIameter

1. For #4 Screws (22)
2. For 3mm or #4 Screws (20)
3. For 5mm or #10 Screws (1)

Length Decimal/Fraction/Metric

1. 0.0625 in.---1/16--1.59mm (1)
2. 0.079 in.-------------2mm (1)
3. 0.118 in.-------------3mm (1)
4. 0.125 in.-----1/8----3.18mm (1)
5. 0.156 in.----5/32---3.96mm (1)
6. 0.1575 in.-----------4mm (1)
7. 0.160 in.-------------4.06mm (1)
8. 0.172 in.---11/64---4.37mm (1)
9. 0.1875 in.---3/16---4.76mm (1)
10. 0.197 in.-------------5mm (2)
11. 0.236 in.-------------6mm (1)
12. 0.250 in.-----1/4----6.35mm (1)
13. 0.2755 in.-----------7mm (1)
14. 0.281 in.----9/32---7.14mm (1)
15. 0.291 in.------------7.4mm (1)
16. 0.3125 in.---5/16---7.94mm (1)
17. 0.315 in.-------------8mm (2)
18. 0.344 in.---11/32---8.74mm (1)
19. 0.350 in.-------------8.89mm (1)
20. 0.354 in.-------------9mm (2)
21. 0.375 in.-----3/8----9.53mm (1)
22. 0.380 in.-------------9.65mm (1)
23. 0.394 in.-------------10mm (1)
24. 0.406 in.---13/32---10.31mm (1)
25. 0.433 in.-------------11mm (1)
26. 0.4375 in.---7/16---11.11mm (1)
27. 0.469 in.---15/32---11.91mm (1)
28. 0.472 in.-------------12mm (1)
29. 0.500 in.-----1/2----12.7mm (1)
30. 0.500 in.-----1/2----12.7mm (1)
31. 0.551 in.-------------14mm (1)
32. 0.5625 in.---9/16---14.29mm (1)
33. 0.625 in.-----5/8----15.88mm (2)
34. 0.6875 in.--11/16--17.46mm- (1)
35. 0.719 in.---23/32---18.26mm (1)
36. 0.750 in.----3/4-----19.05mm (1)
37. 0.827 in.-------------21mm (1)
38. 0.875 in.----7/8-----22.23mm (1)
39. 0.886 in.-------------22.5mm) (1)
40. 1 inch---------1-----25.4mm (1)

Metal Alloy

1. Aluminum 6061-T6 (44)