Which tap sizes can I use for my project?

You can confirm available tap sizes for all our materials in a few ways. Here’s how!

1. Thread / Tap Size Chart

Our design guidelines include a thread/hole chart showing all of our available sizes and the hole diameter required for each. Click here to get right to it!

2. Processing Minimum / Maximum Part Size Chart

The processing min/max page lists every material thickness and shows if it is eligible for tapping services. For qualifying material thicknesses, the smallest and largest metric and imperial taps available are listed.

3. Material Page Design Specifications

Visit our Material Library to access our dedicated material pages. Click a material, then scroll down to find the Material Details which include Design Considerations. The smallest and largest available tap sizes for each material thickness will be listed there as well!

Confirm available tap sizes on our tapping guidelines page, processing min/max page, or individual material pages.

Please note, these are the sizes available for parts you’d like to add SendCutSend tapping services to. If you plan to tap your parts at home you may be able to use a wider range.

For tapping tips, check out our guides on the subject here!

In Summary:

Which tap sizes can I use for my project?

Confirm this by checking our tapping design guidelines, processing min/max page, and material pages.

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We proudly use hardware by PEM

Flush Standoff, 4-40, .250" Zinc plus Clear Chromate

Aluminum: 5052, 6061, 7075 Steel: Mild, G30

SKUSO-440-8
Thread Size4-40 x .250″
Hole size in sheet (+0.003/-.0.000).168″
Minimum sheet thickness0.040″
Maximum sheet thickness.125″
Fastener materialSteel
Minimum distance hole C/L to edge0.230″
When determining the distance between two or more fasteners, you can calculate the distance by the formula, C/L to edge + 1/2 the diameter of the second mounting hole..345″
Recommended panel materialSteel/Aluminum
Coating typeZinc
Length.250″
Aluminum material ranges (5052, 6061, 7075)0.040″-0.125″
Steel material ranges (CRS, HRPO, HR)0.048″-0.119″

We proudly use hardware by PEM

Flush Standoff, 4-40, .250" Passivated

Stainless Steel: 304, 316

SKUSO4-440-8
Thread Size440
Hole size in sheet (+0.003/-.0.000).166″
Minimum sheet thickness0.04″
Maximum sheet thickness.125″
Fastener material400 Stainless Steel
Minimum distance hole C/L to edge0.230″
When determining the distance between two or more fasteners, you can calculate the distance by the formula, C/L to edge + 1/2 the diameter of the second mounting hole. Example shown with x2 of the same hardware..313″
Recommended panel materialStainless Steel
Coating typePassivated
Length.250″
304 Stainless Steel material ranges0.048″-0.125″
316 Stainless Steel material ranges0.060″-0.125″