What sizes does this cover?

The Socket & Wrench Size pack covers standard metric hex bolts from M3 to M36 and imperial hex bolts from 1/4" to 1-1/2". These are the most common sizes in hardware stores and automotive work.

Are these sizes guaranteed correct?

Sizes are based on ISO and SAE standards for standard hex head bolts and nuts. Actual fasteners vary by manufacturer, grade, and application. Always verify with the fastener when precision matters.

What about Torx, spline, or specialty fasteners?

This tool covers hex head fasteners only. Torx, spline, 12-point, and other drive types are not yet supported.

Can I use the nearest imperial socket on a metric bolt?

In a pinch it may work, but risks rounding the fastener head. Use the correct socket whenever possible. Related values shown are for reference, not substitution.

Will more packs be added?

Yes. Pilot Hole, Tap Drill, and Metric/Imperial conversion packs are planned. The architecture supports new reference sets without changing the app.

5/16" → 8mm Metric

The nearest metric equivalent of 5/16" is 8mm (0.06mm difference).

Result

Answer

8mm (8mm)

Standard

Buy8mm socket metric conversion set Metric + SAE combo set

Input Size5/16" (7.94mm)

Nearest Metric8mm (8mm)

Difference0.06mm

Second Nearest7mm (7mm, 0.94mm off)

SystemImperial → Metric

A 5/16" socket or wrench (7.94mm) is closest to 8mm metric, a difference of 0.06mm. These sizes are virtually interchangeable.

Note

Reference value from published fastener data. Always verify with the fastener manufacturer for critical applications.

Related Sizes

← 1/4"3/8" →

About 5/16" Conversion

A 5/16" imperial socket or wrench (7.94mm) is closest to 8mm metric, with a difference of 0.06mm. These sizes are virtually interchangeable and can be safely substituted. The second-nearest metric size is 7mm (7mm, 0.94mm off). Small SAE bolts. A combination metric and SAE socket set is the best way to handle mixed fasteners without risking damage.

← Look up another size