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Hex Head Tapping Screw

ISO 1479 (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 — 87 confirmed sizes to ISO 1479

Material
Finish
dNominal Diameter (mm)lLength (mm)PThread Pitch (mm)sWidth Across Flats (max) (mm)eWidth Across Corners (min) (mm)kNominal Head Height (mm)MOQQuantity and inquiry
ST2.9191.155.42.33000
ST2.9221.155.42.33000
ST2.9251.155.42.33000
ST2.9321.155.42.33000
ST2.9381.155.42.33000
ST2.9451.155.42.33000
ST2.9501.155.42.33000
ST3.59.51.35.55.962.63000
ST3.5131.35.55.962.63000
ST3.5161.35.55.962.63000
ST3.5191.35.55.962.63000
ST3.5221.35.55.962.63000
ST3.5251.35.55.962.63000
ST3.5321.35.55.962.63000
ST3.5381.35.55.962.63000
ST3.5451.35.55.962.63000

Showing 16 of 87 sizes

ST2.9 × 19 × 1.1 × 5 × 5.4 × 2.3 × 1.1 × 4.82 × 2 × 0.1 × 2.6 × 2.1 × 18.2 × 19.8

dNominal Diameter (mm)ST2.9
lLength (mm)19
PThread Pitch (mm)1.1
sWidth Across Flats (max) (mm)5
eWidth Across Corners (min) (mm)5.4
kNominal Head Height (mm)2.3
MOQ3000

ST2.9 × 22 × 1.1 × 5 × 5.4 × 2.3 × 1.1 × 4.82 × 2 × 0.1 × 2.6 × 2.1 × 21.2 × 22.8

dNominal Diameter (mm)ST2.9
lLength (mm)22
PThread Pitch (mm)1.1
sWidth Across Flats (max) (mm)5
eWidth Across Corners (min) (mm)5.4
kNominal Head Height (mm)2.3
MOQ3000

ST2.9 × 25 × 1.1 × 5 × 5.4 × 2.3 × 1.1 × 4.82 × 2 × 0.1 × 2.6 × 2.1 × 24.2 × 25.8

dNominal Diameter (mm)ST2.9
lLength (mm)25
PThread Pitch (mm)1.1
sWidth Across Flats (max) (mm)5
eWidth Across Corners (min) (mm)5.4
kNominal Head Height (mm)2.3
MOQ3000

ST2.9 × 32 × 1.1 × 5 × 5.4 × 2.3 × 1.1 × 4.82 × 2 × 0.1 × 2.6 × 2.1 × 30.7 × 33.3

dNominal Diameter (mm)ST2.9
lLength (mm)32
PThread Pitch (mm)1.1
sWidth Across Flats (max) (mm)5
eWidth Across Corners (min) (mm)5.4
kNominal Head Height (mm)2.3
MOQ3000

ST2.9 × 38 × 1.1 × 5 × 5.4 × 2.3 × 1.1 × 4.82 × 2 × 0.1 × 2.6 × 2.1 × 36.7 × 39.3

dNominal Diameter (mm)ST2.9
lLength (mm)38
PThread Pitch (mm)1.1
sWidth Across Flats (max) (mm)5
eWidth Across Corners (min) (mm)5.4
kNominal Head Height (mm)2.3
MOQ3000

ST2.9 × 45 × 1.1 × 5 × 5.4 × 2.3 × 1.1 × 4.82 × 2 × 0.1 × 2.6 × 2.1 × 43.7 × 46.3

dNominal Diameter (mm)ST2.9
lLength (mm)45
PThread Pitch (mm)1.1
sWidth Across Flats (max) (mm)5
eWidth Across Corners (min) (mm)5.4
kNominal Head Height (mm)2.3
MOQ3000

ST2.9 × 50 × 1.1 × 5 × 5.4 × 2.3 × 1.1 × 4.82 × 2 × 0.1 × 2.6 × 2.1 × 48.7 × 51.3

dNominal Diameter (mm)ST2.9
lLength (mm)50
PThread Pitch (mm)1.1
sWidth Across Flats (max) (mm)5
eWidth Across Corners (min) (mm)5.4
kNominal Head Height (mm)2.3
MOQ3000

ST3.5 × 9.5 × 1.3 × 5.5 × 5.96 × 2.6 × 1.3 × 5.32 × 2.3 × 0.1 × 3.2 × 2.5 × 8.7 × 10.3 × 2.7

dNominal Diameter (mm)ST3.5
lLength (mm)9.5
PThread Pitch (mm)1.3
sWidth Across Flats (max) (mm)5.5
eWidth Across Corners (min) (mm)5.96
kNominal Head Height (mm)2.6
MOQ3000

ST3.5 × 13 × 1.3 × 5.5 × 5.96 × 2.6 × 1.3 × 5.32 × 2.3 × 0.1 × 3.2 × 2.5 × 12.2 × 13.8 × 2.7

dNominal Diameter (mm)ST3.5
lLength (mm)13
PThread Pitch (mm)1.3
sWidth Across Flats (max) (mm)5.5
eWidth Across Corners (min) (mm)5.96
kNominal Head Height (mm)2.6
MOQ3000

ST3.5 × 16 × 1.3 × 5.5 × 5.96 × 2.6 × 1.3 × 5.32 × 2.3 × 0.1 × 3.2 × 2.5 × 15.2 × 16.8 × 2.7

dNominal Diameter (mm)ST3.5
lLength (mm)16
PThread Pitch (mm)1.3
sWidth Across Flats (max) (mm)5.5
eWidth Across Corners (min) (mm)5.96
kNominal Head Height (mm)2.6
MOQ3000

ST3.5 × 19 × 1.3 × 5.5 × 5.96 × 2.6 × 1.3 × 5.32 × 2.3 × 0.1 × 3.2 × 2.5 × 18.2 × 19.8 × 2.7

dNominal Diameter (mm)ST3.5
lLength (mm)19
PThread Pitch (mm)1.3
sWidth Across Flats (max) (mm)5.5
eWidth Across Corners (min) (mm)5.96
kNominal Head Height (mm)2.6
MOQ3000

ST3.5 × 22 × 1.3 × 5.5 × 5.96 × 2.6 × 1.3 × 5.32 × 2.3 × 0.1 × 3.2 × 2.5 × 21.2 × 22.8 × 2.7

dNominal Diameter (mm)ST3.5
lLength (mm)22
PThread Pitch (mm)1.3
sWidth Across Flats (max) (mm)5.5
eWidth Across Corners (min) (mm)5.96
kNominal Head Height (mm)2.6
MOQ3000

ST3.5 × 25 × 1.3 × 5.5 × 5.96 × 2.6 × 1.3 × 5.32 × 2.3 × 0.1 × 3.2 × 2.5 × 24.2 × 25.8 × 2.7

dNominal Diameter (mm)ST3.5
lLength (mm)25
PThread Pitch (mm)1.3
sWidth Across Flats (max) (mm)5.5
eWidth Across Corners (min) (mm)5.96
kNominal Head Height (mm)2.6
MOQ3000

ST3.5 × 32 × 1.3 × 5.5 × 5.96 × 2.6 × 1.3 × 5.32 × 2.3 × 0.1 × 3.2 × 2.5 × 30.7 × 33.3 × 2.7

dNominal Diameter (mm)ST3.5
lLength (mm)32
PThread Pitch (mm)1.3
sWidth Across Flats (max) (mm)5.5
eWidth Across Corners (min) (mm)5.96
kNominal Head Height (mm)2.6
MOQ3000

ST3.5 × 38 × 1.3 × 5.5 × 5.96 × 2.6 × 1.3 × 5.32 × 2.3 × 0.1 × 3.2 × 2.5 × 36.7 × 39.3 × 2.7

dNominal Diameter (mm)ST3.5
lLength (mm)38
PThread Pitch (mm)1.3
sWidth Across Flats (max) (mm)5.5
eWidth Across Corners (min) (mm)5.96
kNominal Head Height (mm)2.6
MOQ3000

ST3.5 × 45 × 1.3 × 5.5 × 5.96 × 2.6 × 1.3 × 5.32 × 2.3 × 0.1 × 3.2 × 2.5 × 43.7 × 46.3 × 2.7

dNominal Diameter (mm)ST3.5
lLength (mm)45
PThread Pitch (mm)1.3
sWidth Across Flats (max) (mm)5.5
eWidth Across Corners (min) (mm)5.96
kNominal Head Height (mm)2.6
MOQ3000

Product details

Description
This is a hexagon head self-tapping screw conforming to ISO 1479. It features a hexagon head for spanner or socket driving and a self-tapping thread designed to form its own mating thread in pre-drilled or punched holes. The screw is supplied in carbon steel or stainless steel, with finishes including zinc plated, Dacromet, passivated, or plain. Available diameters range from ST2.2 to ST9.5. When requesting a quotation, specify the diameter, length, material, and finish required.
Features
Hexagon head driven by standard spanners and sockets · Self-tapping thread over the full length up to the head · Available in diameters ST2.2 to ST9.5 · Supplied in carbon steel or stainless steel with multiple finish options
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 Hex Head Tapping Screw do you supply?

Execution standard: ISO 1479. The confirmed specification table covers 2.2–9.5 diameters and 4.5–50 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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