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Slotted Pan Head Tapping Screw

ISO 1481 (Current)

Material
Stainless Steel, Carbon Steel
Finish
Passivated, Plain, Zinc Plated, Dacromet
Size range
ST2.2, ST2.9, ST3.5 + 6 more
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Select sizes and quantities — 29 confirmed sizes to ISO 1481

Material
Finish
dNominal Diameter (mm)lLength (mm)PThread Pitch (mm)kNominal Head Height (mm)aThread Runout (max) (mm)dkHead Diameter (mm)MOQQuantity and inquiry
ST5.5501.83.21.8113000
ST6.3161.83.61.8123000
ST6.3251.83.61.8123000
ST6.3451.83.61.8123000
ST6.3501.83.61.8123000
ST8162.14.82.1161800
ST8252.14.82.1161800
ST8452.14.82.1161800
ST8502.14.82.1161800
ST9.5162.162.1201800
ST9.5252.162.1201800
ST9.5452.162.1201800
ST9.5502.162.1201800

Showing 13 of 29 sizes

ST5.5 × 50 × 1.8 × 3.2 × 1.8 × 11 × 10.6 × 2.9 × 1.91 × 1.66 × 1.3 × 0.25 × 5 × 3.6 × 48.7 × 51.3 × 4.3

dNominal Diameter (mm)ST5.5
lLength (mm)50
PThread Pitch (mm)1.8
kNominal Head Height (mm)3.2
aThread Runout (max) (mm)1.8
dkHead Diameter (mm)11
MOQ3000

ST6.3 × 16 × 1.8 × 3.6 × 1.8 × 12 × 11.6 × 3.3 × 1.91 × 1.66 × 1.4 × 0.25 × 6 × 3.6 × 15.2 × 16.8 × 5

dNominal Diameter (mm)ST6.3
lLength (mm)16
PThread Pitch (mm)1.8
kNominal Head Height (mm)3.6
aThread Runout (max) (mm)1.8
dkHead Diameter (mm)12
MOQ3000

ST6.3 × 25 × 1.8 × 3.6 × 1.8 × 12 × 11.6 × 3.3 × 1.91 × 1.66 × 1.4 × 0.25 × 6 × 3.6 × 24.2 × 25.8 × 5

dNominal Diameter (mm)ST6.3
lLength (mm)25
PThread Pitch (mm)1.8
kNominal Head Height (mm)3.6
aThread Runout (max) (mm)1.8
dkHead Diameter (mm)12
MOQ3000

ST6.3 × 45 × 1.8 × 3.6 × 1.8 × 12 × 11.6 × 3.3 × 1.91 × 1.66 × 1.4 × 0.25 × 6 × 3.6 × 43.7 × 46.3 × 5

dNominal Diameter (mm)ST6.3
lLength (mm)45
PThread Pitch (mm)1.8
kNominal Head Height (mm)3.6
aThread Runout (max) (mm)1.8
dkHead Diameter (mm)12
MOQ3000

ST6.3 × 50 × 1.8 × 3.6 × 1.8 × 12 × 11.6 × 3.3 × 1.91 × 1.66 × 1.4 × 0.25 × 6 × 3.6 × 48.7 × 51.3 × 5

dNominal Diameter (mm)ST6.3
lLength (mm)50
PThread Pitch (mm)1.8
kNominal Head Height (mm)3.6
aThread Runout (max) (mm)1.8
dkHead Diameter (mm)12
MOQ3000

ST8 × 16 × 2.1 × 4.8 × 2.1 × 16 × 15.6 × 4.5 × 2.31 × 2.06 × 1.9 × 0.4 × 7.5 × 4.2 × 15.2 × 16.8 × 6.3

dNominal Diameter (mm)ST8
lLength (mm)16
PThread Pitch (mm)2.1
kNominal Head Height (mm)4.8
aThread Runout (max) (mm)2.1
dkHead Diameter (mm)16
MOQ1800

ST8 × 25 × 2.1 × 4.8 × 2.1 × 16 × 15.6 × 4.5 × 2.31 × 2.06 × 1.9 × 0.4 × 7.5 × 4.2 × 24.2 × 25.8 × 6.3

dNominal Diameter (mm)ST8
lLength (mm)25
PThread Pitch (mm)2.1
kNominal Head Height (mm)4.8
aThread Runout (max) (mm)2.1
dkHead Diameter (mm)16
MOQ1800

ST8 × 45 × 2.1 × 4.8 × 2.1 × 16 × 15.6 × 4.5 × 2.31 × 2.06 × 1.9 × 0.4 × 7.5 × 4.2 × 43.7 × 46.3 × 6.3

dNominal Diameter (mm)ST8
lLength (mm)45
PThread Pitch (mm)2.1
kNominal Head Height (mm)4.8
aThread Runout (max) (mm)2.1
dkHead Diameter (mm)16
MOQ1800

ST8 × 50 × 2.1 × 4.8 × 2.1 × 16 × 15.6 × 4.5 × 2.31 × 2.06 × 1.9 × 0.4 × 7.5 × 4.2 × 48.7 × 51.3 × 6.3

dNominal Diameter (mm)ST8
lLength (mm)50
PThread Pitch (mm)2.1
kNominal Head Height (mm)4.8
aThread Runout (max) (mm)2.1
dkHead Diameter (mm)16
MOQ1800

ST9.5 × 16 × 2.1 × 6 × 2.1 × 20 × 19.5 × 5.7 × 2.81 × 2.56 × 2.4 × 0.4 × 8 × 4.2 × 15.2 × 16.8

dNominal Diameter (mm)ST9.5
lLength (mm)16
PThread Pitch (mm)2.1
kNominal Head Height (mm)6
aThread Runout (max) (mm)2.1
dkHead Diameter (mm)20
MOQ1800

ST9.5 × 25 × 2.1 × 6 × 2.1 × 20 × 19.5 × 5.7 × 2.81 × 2.56 × 2.4 × 0.4 × 8 × 4.2 × 24.2 × 25.8

dNominal Diameter (mm)ST9.5
lLength (mm)25
PThread Pitch (mm)2.1
kNominal Head Height (mm)6
aThread Runout (max) (mm)2.1
dkHead Diameter (mm)20
MOQ1800

ST9.5 × 45 × 2.1 × 6 × 2.1 × 20 × 19.5 × 5.7 × 2.81 × 2.56 × 2.4 × 0.4 × 8 × 4.2 × 43.7 × 46.3

dNominal Diameter (mm)ST9.5
lLength (mm)45
PThread Pitch (mm)2.1
kNominal Head Height (mm)6
aThread Runout (max) (mm)2.1
dkHead Diameter (mm)20
MOQ1800

ST9.5 × 50 × 2.1 × 6 × 2.1 × 20 × 19.5 × 5.7 × 2.81 × 2.56 × 2.4 × 0.4 × 8 × 4.2 × 48.7 × 51.3

dNominal Diameter (mm)ST9.5
lLength (mm)50
PThread Pitch (mm)2.1
kNominal Head Height (mm)6
aThread Runout (max) (mm)2.1
dkHead Diameter (mm)20
MOQ1800

Product details

Description
Slotted pan head tapping screw with a self-tapping thread. The pan head provides a low profile with a flat bearing surface, and the slotted drive accepts a standard flat-blade screwdriver. Thread dimensions follow ISO 1481 for ST2.2 and ST2.9 diameters, with lengths from 16 mm to 50 mm. Supply materials are stainless steel and carbon steel, with finishes of passivated, plain, zinc plated, or Dacromet. When requesting a quotation, specify diameter, length, material, and finish.
Features
Pan head with flat bearing surface · Slotted drive for flat-blade screwdriver · Self-tapping thread per ISO 1481 · Available in stainless steel and carbon steel with four finishes
Applications
Sheet metal assembly, Enclosure and cabinet fixing, HVAC ducting and light fabrication

Order assurance

Confirmed for the quoted product and order.

Reports & inspection

Agreed in the quotation.

  • EN 10204 3.1 material certificate
  • Dimensional inspection report
  • Certificate of conformity
  • Mechanical test report
  • Chemical analysis report
  • Coating inspection report
  • Batch and lot traceability

Packaging & delivery

Options we supply.

  • Bulk carton packing
  • Small boxes with outer cartons
  • Palletized shipment
  • Fumigation-free pallets
  • Inner poly bags
  • Buyer branding and labels

Product questions

What sizes of Slotted Pan Head Tapping Screw do you supply?

Execution standard: ISO 1481. The confirmed specification table covers 2.2–9.5 diameters and 16–50 lengths. Use the specification table to select the exact variant required for quotation.

Which materials, grades and finishes can I order?

Material: Stainless Steel, Carbon Steel; Finish: Passivated, Plain, Zinc Plated, Dacromet. Availability should be confirmed against the selected specification and order quantity.

Where are these self-tapping screws typically used?

Typical applications include Sheet metal assembly, Enclosure and cabinet fixing, HVAC ducting and light fabrication. Final suitability depends on the selected material, grade, finish and operating conditions.

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