Technical data for Tapping screws, cross recessed countersunk flat head

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This product is regulated by the following standards:

Standard DIN EN ISO 7050

Tapping screws, cross recessed countersunk flat head

This standard DIN EN ISO 7050 specifies the characteristics of cross-recessed countersunk flat head tapping screws with thread sizes from ST 2,2 to ST 9,5 inclusive.

Dimensions in mm - source DIN EN ISO 7050 Pubblication date: 11/2011 Superdedes DIN ISO 7050 08/1990
Ø thread size	P	dk max	dk min	k max	recess No.	m type H	m type Z	y type C	y type F
2.2	0.8	3.8	3.5	1.1	0	1.9	2	2	1.6
2.9	1.1	5.5	5.2	1.7	1	3.2	3	2.6	2.1
3.5
4.2
4.8
5.5
6.3
8
9.5

DIN EN ISO 7050 - commercial lengths
thread size	ST 2.2	ST 2.9	ST 3.5	ST 4.2	ST 4.8	ST 5.5	ST 6.3	ST 8	ST 9.5
nominal length l
4.5	X
6.5
9.5
13
16
19
22
25
32
38
45
50

Reproduced by permission of DIN Deutsches Institut für Normung e. V. The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from Beuth Verlag GmbH,Burggrafenstraße 6, 10787 Berlin, Germany.
WARNING - The datasheets provided by this site (fasten.it) are only advisory in support of the commercial activity and their use by anyone is entirely voluntary. Reliance on their contents for any purpose by anyone is at his/her sole risk and Fasten.it s.r.l./www.fasten.it is not responsible for any loss, claim or damage arising there from.

Standard DIN 7982

Attention

This standard has been replaced by DIN EN ISO 7050

Attention

This standard has been withdrawn

Tapping screws, cross recessed countersunk flat head

Dimensions in mm - source DIN 7982 Withdrawn
Publication Date 08/1990 - Supersedes DIN 7982: 12/1984
Ø thread size	P	dk max.	dk min	k max.	recess No.	m type H	m type Z	y type C	y type F
2.2	0.8	4.3	4	1.3	1	2.5	2.4	2	1.6
2.9
3.5
3.9
4.2
4.8
5.5
6.3

DIN 7982 - ≈ weight in kg x1000 pcs, (ρ=7,85 kg/dm³) - commercial sizes
d thread size	ST 2.2	ST 2.9	ST 3.5	ST 3.9	ST 4.2	ST 4.8	ST 5.5	ST 6.3	ST 8	ST 9.5
nominal length l
4.5	0.1
6.5
9.5
13
16
19
22
25
32
38
45
50

Standard UNI 6955

Attention

This standard has been withdrawn

Tapping screws, cross recessed countersunk flat head

Dimensions in mm - source UNI 6955 Withdrawn
Publication date: 11/1978

The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from UNI - Ente italiano di normazione Via Sannio 2 - 20137 Milano, Italy.
WARNING - The datasheets provided by this site (fasten.it) are only advisory in support of the commercial activity and their use by anyone is entirely voluntary. Reliance on their contents for any purpose by anyone is at his/her sole risk and Fasten.it s.r.l./www.fasten.it is not responsible for any loss, claim or damage arising there from.

Standard NF E25-656

Attention

This standard has been withdrawn

Tapping screws, cross recessed countersunk flat head

Dimensions in mm - source NF E25-656 Withdrawn
Publication Date 12/1984

Ø thread size	P	dk max	dk min	k max	recess No.	m type H	m type Z	y type C	y type F
2.2	0.8	3.8	3.5	1.1	0	1.9	2	2	1.6
2.9	1.1	5.5	5.2	1.7	1	3.2	3	2.6	2.1
3.5	1.3	7.3	6.9	2.35	2	4.4	4.1	3.2	2.5
4.2
4.8
5.5
6.3
8
9.5

The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from AFNOR - Association Française de Normalization, 11 Rue Francis de Pressensé, 93210 Saint-Denis, France.
WARNING - The datasheets provided by this site (fasten.it) are only advisory in support of the commercial activity and their use by anyone is entirely voluntary. Reliance on their contents for any purpose by anyone is at his/her sole risk and Fasten.it s.r.l./www.fasten.it is not responsible for any loss, claim or damage arising there from.

Standard BS 4174 9

80° Recess countersunk head screws, type Z

Dimensions in mm - source BS 4174 Table 9 80° Recess countersunk head screws, type Z: Publication date: 10 - 1972
Ø thread size	dk min	dk max	k nom	t min	t max	m nom	recess nr.
ST 2.2	3.73	4.37	1.3	1.19	1.6	2.4	1
ST 2.9	4.95	5.71	1.7	1.85	2.26	3.05	1
ST 3.5
ST 4.2
ST 4.8
ST 5.5
ST 6.3
ST 8

The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from BSI -The British Standards Institution, 389 Chiswick High Road, London, W4 4AL, UK.
WARNING - The datasheets provided by this site (fasten.it) are only advisory in support of the commercial activity and their use by anyone is entirely voluntary. Reliance on their contents for any purpose by anyone is at his/her sole risk and Fasten.it s.r.l./www.fasten.it is not responsible for any loss, claim or damage arising there from.

Standard BS 4174 11

80° Recess truncated countersunk head screws, type Z

Dimensions in mm - source BS 4174 Table 11 80° Recess truncated countersunk head screws, type Z: Publication date: 10 - 1972
Ø thread size	dk min	dk max	k min	k max	t min	t max	m nom	recess nr.
ST 2.2	3.73	4.37	0.71	0.91	1.02	1.42	2.21	1
ST 2.9	4.95	5.71	0.96	1.19	1.57	1.98	2.77	1
ST 3.5
ST 4.2
ST 4.8
ST 5.5
ST 6.3
ST 8