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Hex Washer Head Tapping Screw

ISO 7053 (Current)

Material
Stainless Steel, Carbon Steel
Finish
Passivated, Plain, Zinc Plated, Dacromet and more
Size range
ST2.2, ST2.9, ST3.5 + 6 more
TDSHex Washer Head Tapping Screw ISO 7053 - ISO 7053Download PDF
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Select sizes and quantities — 59 confirmed sizes to ISO 7053

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
ST6.3381.81010.955.93000
ST6.3451.81010.955.93000
ST6.3501.81010.955.93000
ST8162.11314.2671800
ST8192.11314.2671800
ST8222.11314.2671800
ST8252.11314.2671800
ST8322.11314.2671800
ST8382.11314.2671800
ST8452.11314.2671800
ST8502.11314.2671800

Showing 11 of 59 sizes

ST6.3 × 38 × 1.8 × 10 × 10.95 × 5.9 × 1.8 × 1 × 7.3 × 13.5 × 12.2 × 5.3 × 3.1 × 0.25 × 0.5 × 9.78 × 6 × 3.6 × 36.7 × 39.3 × 5

dNominal Diameter (mm)ST6.3
lLength (mm)38
PThread Pitch (mm)1.8
sWidth Across Flats (max) (mm)10
eWidth Across Corners (min) (mm)10.95
kNominal Head Height (mm)5.9
MOQ3000

ST6.3 × 45 × 1.8 × 10 × 10.95 × 5.9 × 1.8 × 1 × 7.3 × 13.5 × 12.2 × 5.3 × 3.1 × 0.25 × 0.5 × 9.78 × 6 × 3.6 × 43.7 × 46.3 × 5

dNominal Diameter (mm)ST6.3
lLength (mm)45
PThread Pitch (mm)1.8
sWidth Across Flats (max) (mm)10
eWidth Across Corners (min) (mm)10.95
kNominal Head Height (mm)5.9
MOQ3000

ST6.3 × 50 × 1.8 × 10 × 10.95 × 5.9 × 1.8 × 1 × 7.3 × 13.5 × 12.2 × 5.3 × 3.1 × 0.25 × 0.5 × 9.78 × 6 × 3.6 × 48.7 × 51.3 × 5

dNominal Diameter (mm)ST6.3
lLength (mm)50
PThread Pitch (mm)1.8
sWidth Across Flats (max) (mm)10
eWidth Across Corners (min) (mm)10.95
kNominal Head Height (mm)5.9
MOQ3000

ST8 × 16 × 2.1 × 13 × 14.26 × 7 × 2.1 × 1.2 × 9.2 × 18 × 16.7 × 6.4 × 3.3 × 0.4 × 0.6 × 12.73 × 7.5 × 4.2 × 15.2 × 16.8 × 6.3

dNominal Diameter (mm)ST8
lLength (mm)16
PThread Pitch (mm)2.1
sWidth Across Flats (max) (mm)13
eWidth Across Corners (min) (mm)14.26
kNominal Head Height (mm)7
MOQ1800

ST8 × 19 × 2.1 × 13 × 14.26 × 7 × 2.1 × 1.2 × 9.2 × 18 × 16.7 × 6.4 × 3.3 × 0.4 × 0.6 × 12.73 × 7.5 × 4.2 × 18.2 × 19.8 × 6.3

dNominal Diameter (mm)ST8
lLength (mm)19
PThread Pitch (mm)2.1
sWidth Across Flats (max) (mm)13
eWidth Across Corners (min) (mm)14.26
kNominal Head Height (mm)7
MOQ1800

ST8 × 22 × 2.1 × 13 × 14.26 × 7 × 2.1 × 1.2 × 9.2 × 18 × 16.7 × 6.4 × 3.3 × 0.4 × 0.6 × 12.73 × 7.5 × 4.2 × 21.2 × 22.8 × 6.3

dNominal Diameter (mm)ST8
lLength (mm)22
PThread Pitch (mm)2.1
sWidth Across Flats (max) (mm)13
eWidth Across Corners (min) (mm)14.26
kNominal Head Height (mm)7
MOQ1800

ST8 × 25 × 2.1 × 13 × 14.26 × 7 × 2.1 × 1.2 × 9.2 × 18 × 16.7 × 6.4 × 3.3 × 0.4 × 0.6 × 12.73 × 7.5 × 4.2 × 24.2 × 25.8 × 6.3

dNominal Diameter (mm)ST8
lLength (mm)25
PThread Pitch (mm)2.1
sWidth Across Flats (max) (mm)13
eWidth Across Corners (min) (mm)14.26
kNominal Head Height (mm)7
MOQ1800

ST8 × 32 × 2.1 × 13 × 14.26 × 7 × 2.1 × 1.2 × 9.2 × 18 × 16.7 × 6.4 × 3.3 × 0.4 × 0.6 × 12.73 × 7.5 × 4.2 × 30.7 × 33.3 × 6.3

dNominal Diameter (mm)ST8
lLength (mm)32
PThread Pitch (mm)2.1
sWidth Across Flats (max) (mm)13
eWidth Across Corners (min) (mm)14.26
kNominal Head Height (mm)7
MOQ1800

ST8 × 38 × 2.1 × 13 × 14.26 × 7 × 2.1 × 1.2 × 9.2 × 18 × 16.7 × 6.4 × 3.3 × 0.4 × 0.6 × 12.73 × 7.5 × 4.2 × 36.7 × 39.3 × 6.3

dNominal Diameter (mm)ST8
lLength (mm)38
PThread Pitch (mm)2.1
sWidth Across Flats (max) (mm)13
eWidth Across Corners (min) (mm)14.26
kNominal Head Height (mm)7
MOQ1800

ST8 × 45 × 2.1 × 13 × 14.26 × 7 × 2.1 × 1.2 × 9.2 × 18 × 16.7 × 6.4 × 3.3 × 0.4 × 0.6 × 12.73 × 7.5 × 4.2 × 43.7 × 46.3 × 6.3

dNominal Diameter (mm)ST8
lLength (mm)45
PThread Pitch (mm)2.1
sWidth Across Flats (max) (mm)13
eWidth Across Corners (min) (mm)14.26
kNominal Head Height (mm)7
MOQ1800

ST8 × 50 × 2.1 × 13 × 14.26 × 7 × 2.1 × 1.2 × 9.2 × 18 × 16.7 × 6.4 × 3.3 × 0.4 × 0.6 × 12.73 × 7.5 × 4.2 × 48.7 × 51.3 × 6.3

dNominal Diameter (mm)ST8
lLength (mm)50
PThread Pitch (mm)2.1
sWidth Across Flats (max) (mm)13
eWidth Across Corners (min) (mm)14.26
kNominal Head Height (mm)7
MOQ1800

Product details

Description
This is a hex washer head tapping screw manufactured to ISO 7053. The screw features a hexagon drive and a self-tapping thread, with a washer face under the head for increased bearing surface. It is supplied in carbon steel or stainless steel, with finishes including zinc plated, Dacromet, Ruspert, passivated, or plain. Diameters range from ST2.2 to ST8. When requesting a quotation, specify the diameter, length, material, and finish required.
Features
Hex washer head with integrated flange · Hexagon drive for use with standard spanners and sockets · Self-tapping thread for forming its own mating thread in pre-drilled holes · Available in diameters ST2.2 to ST8, in carbon steel or stainless steel
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 Washer Head Tapping Screw do you supply?

Execution standard: ISO 7053. The confirmed specification table covers 2.2–8 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, Ruspert. 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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