Hex Flange Head Tapping Screw

ISO 10509 (Current)

Material: Stainless Steel, Carbon Steel
Finish: Passivated, Plain, Zinc Plated, Dacromet
Size range: ST2.2, ST2.9, ST3.5 + 6 more

TDSHex Flange Head Tapping Screw ISO 10509 - ISO 10509Download PDF

Select sizes and quantities — 63 confirmed sizes to ISO 10509

Material

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dNominal Diameter (mm)	lLength (mm)	PThread Pitch (mm)	sWidth Across Flats (max) (mm)	eWidth Across Corners (min) (mm)	kNominal Head Height (mm)	MOQ
ST3.5	22	1.3	5	5.36	3.8	3000
ST3.5	25	1.3	5	5.36	3.8	3000
ST4.2	9.5	1.4	5.5	5.92	4.3	3000
ST4.2	13	1.4	5.5	5.92	4.3	3000
ST4.2	16	1.4	5.5	5.92	4.3	3000
ST4.2	19	1.4	5.5	5.92	4.3	3000
ST4.2	22	1.4	5.5	5.92	4.3	3000
ST4.2	25	1.4	5.5	5.92	4.3	3000
ST4.2	32	1.4	5.5	5.92	4.3	3000
ST4.8	13	1.6	7	7.55	5.2	3000
ST4.8	16	1.6	7	7.55	5.2	3000
ST4.8	19	1.6	7	7.55	5.2	3000
ST4.8	22	1.6	7	7.55	5.2	3000
ST4.8	25	1.6	7	7.55	5.2	3000
ST4.8	32	1.6	7	7.55	5.2	3000
ST4.8	38	1.6	7	7.55	5.2	3000

Showing 16 of 63 sizes

ST3.5 × 22 × 1.3 × 5 × 5.36 × 3.8 × 1.3 × 4.1 × 7.5 × 6.9 × 0.5 × 4.82 × 1.6 × 0.1 × 0.2 × 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

eWidth Across Corners (min) (mm)5.36

kNominal Head Height (mm)3.8

MOQ3000

ST3.5 × 25 × 1.3 × 5 × 5.36 × 3.8 × 1.3 × 4.1 × 7.5 × 6.9 × 0.5 × 4.82 × 1.6 × 0.1 × 0.2 × 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

eWidth Across Corners (min) (mm)5.36

kNominal Head Height (mm)3.8

MOQ3000

ST4.2 × 9.5 × 1.4 × 5.5 × 5.92 × 4.3 × 1.4 × 4.9 × 8.5 × 7.8 × 0.6 × 5.32 × 1.8 × 0.2 × 0.2 × 3.7 × 2.8 × 8.7 × 10.3 × 3.2

dNominal Diameter (mm)ST4.2

lLength (mm)9.5

PThread Pitch (mm)1.4

sWidth Across Flats (max) (mm)5.5

eWidth Across Corners (min) (mm)5.92

kNominal Head Height (mm)4.3

MOQ3000

ST4.2 × 13 × 1.4 × 5.5 × 5.92 × 4.3 × 1.4 × 4.9 × 8.5 × 7.8 × 0.6 × 5.32 × 1.8 × 0.2 × 0.2 × 3.7 × 2.8 × 12.2 × 13.8 × 3.2

dNominal Diameter (mm)ST4.2

lLength (mm)13

PThread Pitch (mm)1.4

sWidth Across Flats (max) (mm)5.5

eWidth Across Corners (min) (mm)5.92

kNominal Head Height (mm)4.3

MOQ3000

ST4.2 × 16 × 1.4 × 5.5 × 5.92 × 4.3 × 1.4 × 4.9 × 8.5 × 7.8 × 0.6 × 5.32 × 1.8 × 0.2 × 0.2 × 3.7 × 2.8 × 15.2 × 16.8 × 3.2

dNominal Diameter (mm)ST4.2

lLength (mm)16

PThread Pitch (mm)1.4

sWidth Across Flats (max) (mm)5.5

eWidth Across Corners (min) (mm)5.92

kNominal Head Height (mm)4.3

MOQ3000

ST4.2 × 19 × 1.4 × 5.5 × 5.92 × 4.3 × 1.4 × 4.9 × 8.5 × 7.8 × 0.6 × 5.32 × 1.8 × 0.2 × 0.2 × 3.7 × 2.8 × 18.2 × 19.8 × 3.2

dNominal Diameter (mm)ST4.2

lLength (mm)19

PThread Pitch (mm)1.4

sWidth Across Flats (max) (mm)5.5

eWidth Across Corners (min) (mm)5.92

kNominal Head Height (mm)4.3

MOQ3000

ST4.2 × 22 × 1.4 × 5.5 × 5.92 × 4.3 × 1.4 × 4.9 × 8.5 × 7.8 × 0.6 × 5.32 × 1.8 × 0.2 × 0.2 × 3.7 × 2.8 × 21.2 × 22.8 × 3.2

dNominal Diameter (mm)ST4.2

lLength (mm)22

PThread Pitch (mm)1.4

sWidth Across Flats (max) (mm)5.5

eWidth Across Corners (min) (mm)5.92

kNominal Head Height (mm)4.3

MOQ3000

ST4.2 × 25 × 1.4 × 5.5 × 5.92 × 4.3 × 1.4 × 4.9 × 8.5 × 7.8 × 0.6 × 5.32 × 1.8 × 0.2 × 0.2 × 3.7 × 2.8 × 24.2 × 25.8 × 3.2

dNominal Diameter (mm)ST4.2

lLength (mm)25

PThread Pitch (mm)1.4

sWidth Across Flats (max) (mm)5.5

eWidth Across Corners (min) (mm)5.92

kNominal Head Height (mm)4.3

MOQ3000

ST4.2 × 32 × 1.4 × 5.5 × 5.92 × 4.3 × 1.4 × 4.9 × 8.5 × 7.8 × 0.6 × 5.32 × 1.8 × 0.2 × 0.2 × 3.7 × 2.8 × 30.7 × 33.3 × 3.2

dNominal Diameter (mm)ST4.2

lLength (mm)32

PThread Pitch (mm)1.4

sWidth Across Flats (max) (mm)5.5

eWidth Across Corners (min) (mm)5.92

kNominal Head Height (mm)4.3

MOQ3000

ST4.8 × 13 × 1.6 × 7 × 7.55 × 5.2 × 1.6 × 5.6 × 10 × 9.3 × 0.6 × 6.78 × 2.2 × 0.2 × 0.3 × 4.3 × 3.2 × 12.2 × 13.8 × 3.6

dNominal Diameter (mm)ST4.8

lLength (mm)13

PThread Pitch (mm)1.6

sWidth Across Flats (max) (mm)7

eWidth Across Corners (min) (mm)7.55

kNominal Head Height (mm)5.2

MOQ3000

ST4.8 × 16 × 1.6 × 7 × 7.55 × 5.2 × 1.6 × 5.6 × 10 × 9.3 × 0.6 × 6.78 × 2.2 × 0.2 × 0.3 × 4.3 × 3.2 × 15.2 × 16.8 × 3.6

dNominal Diameter (mm)ST4.8

lLength (mm)16

PThread Pitch (mm)1.6

sWidth Across Flats (max) (mm)7

eWidth Across Corners (min) (mm)7.55

kNominal Head Height (mm)5.2

MOQ3000

ST4.8 × 19 × 1.6 × 7 × 7.55 × 5.2 × 1.6 × 5.6 × 10 × 9.3 × 0.6 × 6.78 × 2.2 × 0.2 × 0.3 × 4.3 × 3.2 × 18.2 × 19.8 × 3.6

dNominal Diameter (mm)ST4.8

lLength (mm)19

PThread Pitch (mm)1.6

sWidth Across Flats (max) (mm)7

eWidth Across Corners (min) (mm)7.55

kNominal Head Height (mm)5.2

MOQ3000

ST4.8 × 22 × 1.6 × 7 × 7.55 × 5.2 × 1.6 × 5.6 × 10 × 9.3 × 0.6 × 6.78 × 2.2 × 0.2 × 0.3 × 4.3 × 3.2 × 21.2 × 22.8 × 3.6

dNominal Diameter (mm)ST4.8

lLength (mm)22

PThread Pitch (mm)1.6

sWidth Across Flats (max) (mm)7

eWidth Across Corners (min) (mm)7.55

kNominal Head Height (mm)5.2

MOQ3000

ST4.8 × 25 × 1.6 × 7 × 7.55 × 5.2 × 1.6 × 5.6 × 10 × 9.3 × 0.6 × 6.78 × 2.2 × 0.2 × 0.3 × 4.3 × 3.2 × 24.2 × 25.8 × 3.6

dNominal Diameter (mm)ST4.8

lLength (mm)25

PThread Pitch (mm)1.6

sWidth Across Flats (max) (mm)7

eWidth Across Corners (min) (mm)7.55

kNominal Head Height (mm)5.2

MOQ3000

ST4.8 × 32 × 1.6 × 7 × 7.55 × 5.2 × 1.6 × 5.6 × 10 × 9.3 × 0.6 × 6.78 × 2.2 × 0.2 × 0.3 × 4.3 × 3.2 × 30.7 × 33.3 × 3.6

dNominal Diameter (mm)ST4.8

lLength (mm)32

PThread Pitch (mm)1.6

sWidth Across Flats (max) (mm)7

eWidth Across Corners (min) (mm)7.55

kNominal Head Height (mm)5.2

MOQ3000

ST4.8 × 38 × 1.6 × 7 × 7.55 × 5.2 × 1.6 × 5.6 × 10 × 9.3 × 0.6 × 6.78 × 2.2 × 0.2 × 0.3 × 4.3 × 3.2 × 36.7 × 39.3 × 3.6

dNominal Diameter (mm)ST4.8

lLength (mm)38

PThread Pitch (mm)1.6

sWidth Across Flats (max) (mm)7

eWidth Across Corners (min) (mm)7.55

kNominal Head Height (mm)5.2

MOQ3000

Product details

Description: This hexagon flange head tapping screw is manufactured to ISO 10509. The integrated flange provides a stable bearing surface, and the hexagon drive allows installation with standard spanners or sockets. The self-tapping thread forms its own mating thread in pre-drilled or punched pilot holes. Supply options include carbon steel and stainless steel, with finishes such as zinc plating, Dacromet, passivated, or plain. For a quotation, specify the required diameter from ST2.2 to ST9.5, material, finish, and quantity.
Features: Hexagon flange head with integrated bearing surface · Self-tapping thread for direct assembly into pilot holes · Hexagon drive for standard spanners and sockets · Available in diameters ST2.2 through ST9.5
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 Flange Head Tapping Screw do you supply?

Execution standard: ISO 10509. 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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Hex Flange Head Tapping Screw

Select sizes and quantities — 63 confirmed sizes to ISO 10509

ST3.5 × 22 × 1.3 × 5 × 5.36 × 3.8 × 1.3 × 4.1 × 7.5 × 6.9 × 0.5 × 4.82 × 1.6 × 0.1 × 0.2 × 3.2 × 2.5 × 21.2 × 22.8 × 2.7

ST3.5 × 25 × 1.3 × 5 × 5.36 × 3.8 × 1.3 × 4.1 × 7.5 × 6.9 × 0.5 × 4.82 × 1.6 × 0.1 × 0.2 × 3.2 × 2.5 × 24.2 × 25.8 × 2.7

ST4.2 × 9.5 × 1.4 × 5.5 × 5.92 × 4.3 × 1.4 × 4.9 × 8.5 × 7.8 × 0.6 × 5.32 × 1.8 × 0.2 × 0.2 × 3.7 × 2.8 × 8.7 × 10.3 × 3.2

ST4.2 × 13 × 1.4 × 5.5 × 5.92 × 4.3 × 1.4 × 4.9 × 8.5 × 7.8 × 0.6 × 5.32 × 1.8 × 0.2 × 0.2 × 3.7 × 2.8 × 12.2 × 13.8 × 3.2

ST4.2 × 16 × 1.4 × 5.5 × 5.92 × 4.3 × 1.4 × 4.9 × 8.5 × 7.8 × 0.6 × 5.32 × 1.8 × 0.2 × 0.2 × 3.7 × 2.8 × 15.2 × 16.8 × 3.2

ST4.2 × 19 × 1.4 × 5.5 × 5.92 × 4.3 × 1.4 × 4.9 × 8.5 × 7.8 × 0.6 × 5.32 × 1.8 × 0.2 × 0.2 × 3.7 × 2.8 × 18.2 × 19.8 × 3.2

ST4.2 × 22 × 1.4 × 5.5 × 5.92 × 4.3 × 1.4 × 4.9 × 8.5 × 7.8 × 0.6 × 5.32 × 1.8 × 0.2 × 0.2 × 3.7 × 2.8 × 21.2 × 22.8 × 3.2

ST4.2 × 25 × 1.4 × 5.5 × 5.92 × 4.3 × 1.4 × 4.9 × 8.5 × 7.8 × 0.6 × 5.32 × 1.8 × 0.2 × 0.2 × 3.7 × 2.8 × 24.2 × 25.8 × 3.2

ST4.2 × 32 × 1.4 × 5.5 × 5.92 × 4.3 × 1.4 × 4.9 × 8.5 × 7.8 × 0.6 × 5.32 × 1.8 × 0.2 × 0.2 × 3.7 × 2.8 × 30.7 × 33.3 × 3.2

ST4.8 × 13 × 1.6 × 7 × 7.55 × 5.2 × 1.6 × 5.6 × 10 × 9.3 × 0.6 × 6.78 × 2.2 × 0.2 × 0.3 × 4.3 × 3.2 × 12.2 × 13.8 × 3.6

ST4.8 × 16 × 1.6 × 7 × 7.55 × 5.2 × 1.6 × 5.6 × 10 × 9.3 × 0.6 × 6.78 × 2.2 × 0.2 × 0.3 × 4.3 × 3.2 × 15.2 × 16.8 × 3.6

ST4.8 × 19 × 1.6 × 7 × 7.55 × 5.2 × 1.6 × 5.6 × 10 × 9.3 × 0.6 × 6.78 × 2.2 × 0.2 × 0.3 × 4.3 × 3.2 × 18.2 × 19.8 × 3.6

ST4.8 × 22 × 1.6 × 7 × 7.55 × 5.2 × 1.6 × 5.6 × 10 × 9.3 × 0.6 × 6.78 × 2.2 × 0.2 × 0.3 × 4.3 × 3.2 × 21.2 × 22.8 × 3.6

ST4.8 × 25 × 1.6 × 7 × 7.55 × 5.2 × 1.6 × 5.6 × 10 × 9.3 × 0.6 × 6.78 × 2.2 × 0.2 × 0.3 × 4.3 × 3.2 × 24.2 × 25.8 × 3.6

ST4.8 × 32 × 1.6 × 7 × 7.55 × 5.2 × 1.6 × 5.6 × 10 × 9.3 × 0.6 × 6.78 × 2.2 × 0.2 × 0.3 × 4.3 × 3.2 × 30.7 × 33.3 × 3.6

ST4.8 × 38 × 1.6 × 7 × 7.55 × 5.2 × 1.6 × 5.6 × 10 × 9.3 × 0.6 × 6.78 × 2.2 × 0.2 × 0.3 × 4.3 × 3.2 × 36.7 × 39.3 × 3.6

Product details

Order assurance

Reports & inspection

Packaging & delivery

Product questions

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