Hole for 5/16" Bolts

Shopping Options

Outer Diameter

1. 7/16 In.--------11.1mm (6)
2. 1/2 in.---------12.7mm (17)
3. 5/8 in.---------15.9mm (20)
4. 3/4 in.---------19.05mm (20)

Bolt Hole Size / Inner DIameter

1. For 5/16" or 8mm Bolts (63)

Length Decimal/Fraction/Metric

1. 0.125 in.-----1/8----3.18mm (3)
2. 0.156 in.----5/32---3.96mm (1)
3. 0.1875 in.---3/16---4.76mm (4)
4. 0.250 in.-----1/4----6.35mm (4)
5. 0.3125 in.---5/16---7.94mm (3)
6. 0.344 in.---11/32---8.74mm (1)
7. 0.375 in.-----3/8----9.53mm (5)
8. 0.4375 in.---7/16---11.11mm (4)
9. 0.500 in.-----1/2----12.7mm (4)
10. 0.5625 in.---9/16---14.29mm (5)
11. 0.625 in.-----5/8----15.88mm (3)
12. 0.6875 in.--11/16--17.46mm- (1)
13. 0.750 in.----3/4-----19.05mm (3)
14. 0.8125 in.--13/16--20.64mm (2)
15. 0.875 in.----7/8-----22.23mm (3)
16. 1 inch---------1-----25.4mm (4)
17. 1.125 in.---1-1/8---28.58mm (3)
18. 1.250 in.---1-1/4---31.75mm (3)
19. 1.3125 in.-1-5/16--33.34mm (1)
20. 1.375 in.---1-3/8---34.93mm (2)
21. 1.500 in.---1-1/2---38.1mm (4)

Metal Alloy

1. Aluminum 6061-T6 (63)