Technical data for Hammer drive screws with round head

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This product is regulated by the following standards:

Standard UNI 7346

Attention

This standard has been withdrawn

Dimensions in mm - source UNI 7346 - WITHDRAWN
Publication date: 11/1974
d nominal thread size	D min/max	h min/max	d1 min/max	s	hole Ø hard materials	hole Ø soft materials
1.5	2.28÷2.5	0.66÷0.87	1.18÷1.24	1.19	1.32	1.31
1.9
2.5
2.9
3.5
4.2
4.5
5.3
6.1

Dimensions in Inches - source BS 4174 type U
Publication date: 1972
d nominal thread size	Nr. of thread	d min/max	D min/max	h min/max	d1 min/max	s nom	drill Ø	hole Ø
No.00	6	0.057÷0.06	0.09÷0.099	0.026÷0.034	0.046÷0.049	0.02	55	0.052
No.0
No.2
No.4
No.6
No.7
No.8
No.10
No.12

UNI 7346 - Approx. weights, in kg x1000 pcs, (ρ=7,85 kg/dm³) - commercial lengths
d thread size	1.5	1.9	2.5	2.9	3.5	4.2	4.5	5.3	6.1
nominal length l
3.5	0.03	0.1	0.18
5
6.5
8
9.5
13
16
19

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.
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Dimensions in mm - source BS 4174
Publication date 05/1972
size	d max	d min	d2 max	d2 min	d1 max	d1 min	k max	k min
00	1.52	1.45	1.24	1.17	2.51	2.29	0.86	0.66
0
2
4
6
7
8
10
12
L<3.2, S = 0,5 mm , 3.2 ≤L<4, S=0.9mm , 4.5≤L<8,S=1.2 mm ; 9.l5≤L<13;S=1.6 mm 16≤l<22,S=2 mm L>25 , S=3,2 mm .

Technical data for Hammer drive screws with round head

This product is regulated by the following standards:

Standard UNI 7346

Standard BS 4174 22

Hammer drive screws with round head

Suppliers of Hammer drive screws with round head

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