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.

T1 Torx Bit — 0.81mm

A T1 Torx (star) bit measures 0.81mm point-to-point.

Result

Answer

T1 Torx bit

Common

BuyT1 bit Budget set Pro set

Torx SizeT1

Point-to-Point0.81mm

Common FastenersSpecialty use

Security VariantNot available

Bit Shank1/4" hex

A T1 Torx bit measures 0.81mm point-to-point. Micro precision; rarely encountered outside specialized instruments.

Note

T1 is a specialty size with limited retail availability. You may need to order from a specialty tool supplier.

Related Sizes

T2 (0.93mm) →

About T1 Torx Bits

A T1 Torx (star) bit measures 0.81mm point-to-point and fits a standard 1/4" hex shank driver. This is a specialty size not commonly found in consumer applications. Micro precision; rarely encountered outside specialized instruments. No standard security variant exists for T1. T1 is a specialty size — you may need to order from a specialty tool supplier.

← Look up another Torx size