Name: Countersunk Self-Tapping Screw
Brand: TaurusFix

Select sizes and quantities — 43 confirmed sizes to ISO 7050

Material

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dNominal Diameter (mm)	lLength (mm)	PThread Pitch (mm)	kNominal Head Height (mm)	aThread Runout (max) (mm)	dkTheoretical Head Diameter (max) (mm)	MOQ
ST2.9	6.5	1.1	1.7	2.2	6.3	2000
ST2.9	9.5	1.1	1.7	2.2	6.3	2000
ST2.9	13	1.1	1.7	2.2	6.3	2000
ST2.9	16	1.1	1.7	2.2	6.3	2000
ST2.9	19	1.1	1.7	2.2	6.3	2000
ST2.9	22	1.1	1.7	2.2	6.3	2000
ST2.9	25	1.1	1.7	2.2	6.3	2000
ST3.5	9.5	1.3	2.35	2.6	8.2	2000
ST3.5	13	1.3	2.35	2.6	8.2	2000
ST3.5	16	1.3	2.35	2.6	8.2	2000
ST3.5	19	1.3	2.35	2.6	8.2	2000
ST3.5	22	1.3	2.35	2.6	8.2	2000
ST3.5	25	1.3	2.35	2.6	8.2	2000
ST3.5	32	1.3	2.35	2.6	8.2	2000
ST4.2	9.5	1.4	2.6	2.8	9.4	2000
ST4.2	13	1.4	2.6	2.8	9.4	2000

Showing 16 of 43 sizes

ST2.9 × 6.5 × 1.1 × 1.7 × 2.2 × 6.3 × 5.5 × 5.2 × 1.2 × 1 × 3.2 × 2.1 × 1.7 × 3 × 2.01 × 1.76 × 2.6 × 2.1

dNominal Diameter (mm)ST2.9

lLength (mm)6.5

PThread Pitch (mm)1.1

kNominal Head Height (mm)1.7

aThread Runout (max) (mm)2.2

dkTheoretical Head Diameter (max) (mm)6.3

MOQ2000

ST2.9 × 9.5 × 1.1 × 1.7 × 2.2 × 6.3 × 5.5 × 5.2 × 1.2 × 1 × 3.2 × 2.1 × 1.7 × 3 × 2.01 × 1.76 × 2.6 × 2.1

dNominal Diameter (mm)ST2.9

lLength (mm)9.5

PThread Pitch (mm)1.1

kNominal Head Height (mm)1.7

aThread Runout (max) (mm)2.2

dkTheoretical Head Diameter (max) (mm)6.3

MOQ2000

ST2.9 × 13 × 1.1 × 1.7 × 2.2 × 6.3 × 5.5 × 5.2 × 1.2 × 1 × 3.2 × 2.1 × 1.7 × 3 × 2.01 × 1.76 × 2.6 × 2.1

dNominal Diameter (mm)ST2.9

lLength (mm)13

PThread Pitch (mm)1.1

kNominal Head Height (mm)1.7

aThread Runout (max) (mm)2.2

dkTheoretical Head Diameter (max) (mm)6.3

MOQ2000

ST2.9 × 16 × 1.1 × 1.7 × 2.2 × 6.3 × 5.5 × 5.2 × 1.2 × 1 × 3.2 × 2.1 × 1.7 × 3 × 2.01 × 1.76 × 2.6 × 2.1

dNominal Diameter (mm)ST2.9

lLength (mm)16

PThread Pitch (mm)1.1

kNominal Head Height (mm)1.7

aThread Runout (max) (mm)2.2

dkTheoretical Head Diameter (max) (mm)6.3

MOQ2000

ST2.9 × 19 × 1.1 × 1.7 × 2.2 × 6.3 × 5.5 × 5.2 × 1.2 × 1 × 3.2 × 2.1 × 1.7 × 3 × 2.01 × 1.76 × 2.6 × 2.1

dNominal Diameter (mm)ST2.9

lLength (mm)19

PThread Pitch (mm)1.1

kNominal Head Height (mm)1.7

aThread Runout (max) (mm)2.2

dkTheoretical Head Diameter (max) (mm)6.3

MOQ2000

ST2.9 × 22 × 1.1 × 1.7 × 2.2 × 6.3 × 5.5 × 5.2 × 1.2 × 1 × 3.2 × 2.1 × 1.7 × 3 × 2.01 × 1.76 × 2.6 × 2.1

dNominal Diameter (mm)ST2.9

lLength (mm)22

PThread Pitch (mm)1.1

kNominal Head Height (mm)1.7

aThread Runout (max) (mm)2.2

dkTheoretical Head Diameter (max) (mm)6.3

MOQ2000

ST2.9 × 25 × 1.1 × 1.7 × 2.2 × 6.3 × 5.5 × 5.2 × 1.2 × 1 × 3.2 × 2.1 × 1.7 × 3 × 2.01 × 1.76 × 2.6 × 2.1

dNominal Diameter (mm)ST2.9

lLength (mm)25

PThread Pitch (mm)1.1

kNominal Head Height (mm)1.7

aThread Runout (max) (mm)2.2

dkTheoretical Head Diameter (max) (mm)6.3

MOQ2000

ST3.5 × 9.5 × 1.3 × 2.35 × 2.6 × 8.2 × 7.3 × 6.9 × 1.4 × 2 × 4.4 × 2.4 × 1.9 × 4.1 × 2.2 × 1.75 × 3.2 × 2.5 × 2.7

dNominal Diameter (mm)ST3.5

lLength (mm)9.5

PThread Pitch (mm)1.3

kNominal Head Height (mm)2.35

aThread Runout (max) (mm)2.6

dkTheoretical Head Diameter (max) (mm)8.2

MOQ2000

ST3.5 × 13 × 1.3 × 2.35 × 2.6 × 8.2 × 7.3 × 6.9 × 1.4 × 2 × 4.4 × 2.4 × 1.9 × 4.1 × 2.2 × 1.75 × 3.2 × 2.5 × 2.7

dNominal Diameter (mm)ST3.5

lLength (mm)13

PThread Pitch (mm)1.3

kNominal Head Height (mm)2.35

aThread Runout (max) (mm)2.6

dkTheoretical Head Diameter (max) (mm)8.2

MOQ2000

ST3.5 × 16 × 1.3 × 2.35 × 2.6 × 8.2 × 7.3 × 6.9 × 1.4 × 2 × 4.4 × 2.4 × 1.9 × 4.1 × 2.2 × 1.75 × 3.2 × 2.5 × 2.7

dNominal Diameter (mm)ST3.5

lLength (mm)16

PThread Pitch (mm)1.3

kNominal Head Height (mm)2.35

aThread Runout (max) (mm)2.6

dkTheoretical Head Diameter (max) (mm)8.2

MOQ2000

ST3.5 × 19 × 1.3 × 2.35 × 2.6 × 8.2 × 7.3 × 6.9 × 1.4 × 2 × 4.4 × 2.4 × 1.9 × 4.1 × 2.2 × 1.75 × 3.2 × 2.5 × 2.7

dNominal Diameter (mm)ST3.5

lLength (mm)19

PThread Pitch (mm)1.3

kNominal Head Height (mm)2.35

aThread Runout (max) (mm)2.6

dkTheoretical Head Diameter (max) (mm)8.2

MOQ2000

ST3.5 × 22 × 1.3 × 2.35 × 2.6 × 8.2 × 7.3 × 6.9 × 1.4 × 2 × 4.4 × 2.4 × 1.9 × 4.1 × 2.2 × 1.75 × 3.2 × 2.5 × 2.7

dNominal Diameter (mm)ST3.5

lLength (mm)22

PThread Pitch (mm)1.3

kNominal Head Height (mm)2.35

aThread Runout (max) (mm)2.6

dkTheoretical Head Diameter (max) (mm)8.2

MOQ2000

ST3.5 × 25 × 1.3 × 2.35 × 2.6 × 8.2 × 7.3 × 6.9 × 1.4 × 2 × 4.4 × 2.4 × 1.9 × 4.1 × 2.2 × 1.75 × 3.2 × 2.5 × 2.7

dNominal Diameter (mm)ST3.5

lLength (mm)25

PThread Pitch (mm)1.3

kNominal Head Height (mm)2.35

aThread Runout (max) (mm)2.6

dkTheoretical Head Diameter (max) (mm)8.2

MOQ2000

ST3.5 × 32 × 1.3 × 2.35 × 2.6 × 8.2 × 7.3 × 6.9 × 1.4 × 2 × 4.4 × 2.4 × 1.9 × 4.1 × 2.2 × 1.75 × 3.2 × 2.5 × 2.7

dNominal Diameter (mm)ST3.5

lLength (mm)32

PThread Pitch (mm)1.3

kNominal Head Height (mm)2.35

aThread Runout (max) (mm)2.6

dkTheoretical Head Diameter (max) (mm)8.2

MOQ2000

ST4.2 × 9.5 × 1.4 × 2.6 × 2.8 × 9.4 × 8.4 × 8 × 1.6 × 2 × 4.6 × 2.6 × 2.1 × 4.4 × 2.51 × 2.06 × 3.7 × 2.8 × 3.2

dNominal Diameter (mm)ST4.2

lLength (mm)9.5

PThread Pitch (mm)1.4

kNominal Head Height (mm)2.6

aThread Runout (max) (mm)2.8

dkTheoretical Head Diameter (max) (mm)9.4

MOQ2000

ST4.2 × 13 × 1.4 × 2.6 × 2.8 × 9.4 × 8.4 × 8 × 1.6 × 2 × 4.6 × 2.6 × 2.1 × 4.4 × 2.51 × 2.06 × 3.7 × 2.8 × 3.2

dNominal Diameter (mm)ST4.2

lLength (mm)13

PThread Pitch (mm)1.4

kNominal Head Height (mm)2.6

aThread Runout (max) (mm)2.8

dkTheoretical Head Diameter (max) (mm)9.4

MOQ2000

Product details

Description: This is a countersunk head self-tapping screw manufactured to ISO 7050. It features a cross recess drive and a self-tapping thread. The screw is supplied in carbon steel or stainless steel, with finishes including zinc plated, Dacromet, Ruspert, phosphate, plain, or passivated. Available diameters are ST2.9 and ST3.5, with lengths from 6.5 to 50. When requesting a quotation, specify the diameter, length, material, and finish.
Features: Countersunk head sits flush with the surface · Cross recess drive for standard installation tools · Self-tapping thread forms its own mating thread in a pilot hole · Available in ST2.9 and ST3.5 diameters with multiple lengths
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 Countersunk Self-Tapping Screw do you supply?

Execution standard: ISO 7050. The confirmed specification table covers 2.9–6.3 diameters and 6.5–38 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, Phosphate. 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.

Countersunk Self-Tapping Screw

Select sizes and quantities — 43 confirmed sizes to ISO 7050

ST2.9 × 6.5 × 1.1 × 1.7 × 2.2 × 6.3 × 5.5 × 5.2 × 1.2 × 1 × 3.2 × 2.1 × 1.7 × 3 × 2.01 × 1.76 × 2.6 × 2.1

ST2.9 × 9.5 × 1.1 × 1.7 × 2.2 × 6.3 × 5.5 × 5.2 × 1.2 × 1 × 3.2 × 2.1 × 1.7 × 3 × 2.01 × 1.76 × 2.6 × 2.1

ST2.9 × 13 × 1.1 × 1.7 × 2.2 × 6.3 × 5.5 × 5.2 × 1.2 × 1 × 3.2 × 2.1 × 1.7 × 3 × 2.01 × 1.76 × 2.6 × 2.1

ST2.9 × 16 × 1.1 × 1.7 × 2.2 × 6.3 × 5.5 × 5.2 × 1.2 × 1 × 3.2 × 2.1 × 1.7 × 3 × 2.01 × 1.76 × 2.6 × 2.1

ST2.9 × 19 × 1.1 × 1.7 × 2.2 × 6.3 × 5.5 × 5.2 × 1.2 × 1 × 3.2 × 2.1 × 1.7 × 3 × 2.01 × 1.76 × 2.6 × 2.1

ST2.9 × 22 × 1.1 × 1.7 × 2.2 × 6.3 × 5.5 × 5.2 × 1.2 × 1 × 3.2 × 2.1 × 1.7 × 3 × 2.01 × 1.76 × 2.6 × 2.1

ST2.9 × 25 × 1.1 × 1.7 × 2.2 × 6.3 × 5.5 × 5.2 × 1.2 × 1 × 3.2 × 2.1 × 1.7 × 3 × 2.01 × 1.76 × 2.6 × 2.1

ST3.5 × 9.5 × 1.3 × 2.35 × 2.6 × 8.2 × 7.3 × 6.9 × 1.4 × 2 × 4.4 × 2.4 × 1.9 × 4.1 × 2.2 × 1.75 × 3.2 × 2.5 × 2.7

ST3.5 × 13 × 1.3 × 2.35 × 2.6 × 8.2 × 7.3 × 6.9 × 1.4 × 2 × 4.4 × 2.4 × 1.9 × 4.1 × 2.2 × 1.75 × 3.2 × 2.5 × 2.7

ST3.5 × 16 × 1.3 × 2.35 × 2.6 × 8.2 × 7.3 × 6.9 × 1.4 × 2 × 4.4 × 2.4 × 1.9 × 4.1 × 2.2 × 1.75 × 3.2 × 2.5 × 2.7

ST3.5 × 19 × 1.3 × 2.35 × 2.6 × 8.2 × 7.3 × 6.9 × 1.4 × 2 × 4.4 × 2.4 × 1.9 × 4.1 × 2.2 × 1.75 × 3.2 × 2.5 × 2.7

ST3.5 × 22 × 1.3 × 2.35 × 2.6 × 8.2 × 7.3 × 6.9 × 1.4 × 2 × 4.4 × 2.4 × 1.9 × 4.1 × 2.2 × 1.75 × 3.2 × 2.5 × 2.7

ST3.5 × 25 × 1.3 × 2.35 × 2.6 × 8.2 × 7.3 × 6.9 × 1.4 × 2 × 4.4 × 2.4 × 1.9 × 4.1 × 2.2 × 1.75 × 3.2 × 2.5 × 2.7

ST3.5 × 32 × 1.3 × 2.35 × 2.6 × 8.2 × 7.3 × 6.9 × 1.4 × 2 × 4.4 × 2.4 × 1.9 × 4.1 × 2.2 × 1.75 × 3.2 × 2.5 × 2.7

ST4.2 × 9.5 × 1.4 × 2.6 × 2.8 × 9.4 × 8.4 × 8 × 1.6 × 2 × 4.6 × 2.6 × 2.1 × 4.4 × 2.51 × 2.06 × 3.7 × 2.8 × 3.2

ST4.2 × 13 × 1.4 × 2.6 × 2.8 × 9.4 × 8.4 × 8 × 1.6 × 2 × 4.6 × 2.6 × 2.1 × 4.4 × 2.51 × 2.06 × 3.7 × 2.8 × 3.2

Product details

Order assurance

Reports & inspection

Packaging & delivery

Product questions

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