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.

M16x2 Tap Drill — 14mm

The recommended tap drill for a M16x2 thread is 14mm. Thread engagement: ~75%.

Result

Answer

14mm drill bit

Standard

Buy14mm drill bit Tap & drill set Pro tap set

Thread SizeM16x2

Pitch2mm (coarse)

Tap Drill (mm)14mm

Tap Drill (fractional)35/64"

Thread Engagement~75%

For a M16x2 thread, use a 14mm drill bit (nearest fractional: 35/64"). This targets approximately 75% thread engagement, which is the standard recommendation for most applications.

Note

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

Related Sizes

← M14x2 M18x2.5 →

About M16x2 Tap Drill

For an M16x2 thread (2mm coarse pitch), the recommended tap drill size is 14mm (nearest fractional: 35/64"). This produces approximately 75% thread engagement, which is the industry standard for most applications. Always use a sharp HSS or cobalt drill bit and proper cutting fluid when tapping.

← Look up another thread size