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.

T9 Torx Bit — 2.5mm

A T9 Torx (star) bit measures 2.5mm point-to-point.

Result

Answer

T9 Torx bit

Standard

BuyT9 bit Budget set Pro set

Torx SizeT9

Point-to-Point2.5mm

Common FastenersSpecialty use

Security VariantT9 Tamperproof (center pin)

Bit Shank1/4" hex

A T9 Torx bit measures 2.5mm point-to-point. Some electronics and small appliances.

Note

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

Related Sizes

← T8 (2.4mm)T10 (2.8mm) →

About T9 Torx Bits

A T9 Torx (star) bit measures 2.5mm point-to-point and fits a standard 1/4" hex shank driver. This is a specialty size not commonly found in consumer applications. Some electronics and small appliances. A security (tamperproof) variant with a center pin is available — standard T9 bits will not fit security fasteners. T9 is widely available at hardware stores and online.

← Look up another Torx size