ANSI B18.3 Countersunk UNC / UNF, A2-A4

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Hex socket screws
ANSI B18.3 Countersunk UNC / UNF, A2-A4

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EN/WN/BN/ANSI

ANSI B18.32

Material

A22
A41

Dimension

1/2UNC2
1/4UNC2
1/4UNF1
3/8UNC2
5/8UNC1
5/16UNC2
5/16UNF1
Nr3UNC1

Length (mm/Inch)

13
1.1/23
1.1/43
1.3/42
1/23
1/41
23
2.1/21

Pitch

111
132
162
182
202
243
281
322

Thread length (mm/Inch)

6,51
82
9,52
112
133
162
193
223

Head diameter (mm/Inch)

6,481
7,82
7,141
9,121
10,43
13,43
16,63
19,82

A/F key size (mm/Inch)

1/83
1/161
3/81
3/163
3/321
5/162
5/323
5/642

Head height (mm/Inch)

2,111
2,291
2,462
2,841
3,23
4,13
53
5,92

Material standard

ISO 35063

Corrosion class

C42
C51

ANSI B18.3 Countersunk UNC / UNF, A2-A4

ANSI B18.3 Countersunk UF6S UNC A2

ANSI B18.3 Countersunk UF6S UNC A4

ANSI B18.3 Countersunk FUF6S UNF A2

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ANSI B18.3 Countersunk UNC / UNF, A2-A4

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