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ISO 1481 dimensionsSlotted pan head tapping screws

2011 edition, current · 9 sizes, ST2.2 – ST9.5 see the cross-reference →

We supply to ISO 1481. Name it on your order.

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ISO 1481 dimensions

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Thread sizePThread Pitch (mm)aThread Runout (max) (mm)dkHead Diameter (mm)dkHead Diameter (min) (mm)kNominal Head Height (mm)kHead Height (min) (mm)nSlot Width (max) (mm)nSlot Width (min) (mm)tSlot Depth (min) (mm)rRadius (min) (mm)yPoint Length — C (ref.) (mm)yPoint Length — F (ref.) (mm)yPoint Length — R (ref.) (mm)
ST2.20.80.843.71.31.10.70.560.50.121.6-
ST2.91.11.15.65.31.81.610.860.70.12.62.1-
ST3.51.31.376.62.11.91.21.060.80.13.22.52.7
ST4.21.41.487.62.42.21.511.2610.23.72.83.2
ST4.81.61.69.59.132.71.511.261.20.24.33.23.6
ST5.51.81.81110.63.22.91.911.661.30.2553.64.3
ST6.31.81.81211.63.63.31.911.661.40.2563.65
ST82.12.11615.64.84.52.312.061.90.47.54.26.3
ST9.52.12.12019.565.72.812.562.40.484.2-

9 of 9 sizes shown.

ISO 1481 sizes

9 diameters · weight and hole sizes live on each size page

ST2.2ST2.9ST3.5ST4.2ST4.8ST5.5ST6.3ST8ST9.5All 29 sizes in this family →

What we supply to ISO 1481

2 materials
MaterialProperty classFinish
Carbon SteelPlain · Zinc Plated · Dacromet
Stainless SteelPassivated · Plain

Quote against ISO 1481

Standard, size, material, finish, quantity and destination are enough to begin.