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.

M18 Bolt Torque — 210 ft-lbs (285 N·m)

Reference Class 8.8 torque for a M18 hex bolt: 210 ft-lbs (285 N·m). Lubricated: 158 ft-lbs (214 N·m).

Result

Answer

210 ft-lbs (285 N·m)

Standard

BuyM18 bolt Torque wrench Wrench set

Torque210 ft-lbs / 285 N·m

Torque (lubricated est.)158 ft-lbs / 214 N·m

Bolt ClassClass 8.8

ThreadM18x2.5

Recommended Drive3/8" drive

A M18x2.5 Class 8.8 bolt: reference torque 210 ft-lbs (285 N·m). Lubricated estimate: 158 ft-lbs (214 N·m). Always verify with the fastener manufacturer and use a calibrated torque wrench.

Note

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

Related Sizes

← M16 bolt M20 bolt →

About M18 Bolt Torque

An M18 hex bolt (Class 8.8): reference torque is 210 ft-lbs (285 N·m), with a lubricated estimate of 158 ft-lbs (214 N·m). Standard thread pitch is 2.5mm (coarse) or 1.5mm (fine). Use a 3/8" drive torque wrench. Actual torque depends on thread condition, lubrication, and joint design — always verify with the fastener manufacturer.

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