PETROCHEMICAL
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HOLDING DOWN BOLTS
BS7419 (SQUARE SQUARE)
| DIA (D) | B (MIN) | B (MAX) | DS (MIN) | DS (MAX) | K (NOM) | K (MIN) | K (MAX) | R (MIN) |
|---|---|---|---|---|---|---|---|---|
| (M12) | 112.0 | 118.0 | 11.3 | 12.7 | 8.0 | 7.0 | 8.8 | 0.5 |
| M16 | 116.0 | 122.0 | 15.3 | 16.7 | 10.0 | 9.3 | 10.8 | 0.6 |
| M20 | 120.0 | 127.5 | 19.2 | 20.8 | 12.5 | 11.6 | 13.4 | 0.8 |
| (M22) | 122.0 | 131.0 | 21.2 | 22.8 | 14.0 | 13.1 | 14.9 | 0.8 |
| M24 | 124.0 | 133.0 | 23.2 | 24.8 | 15.0 | 14.1 | 15.9 | 0.8 |
| (M27) | 127.0 | 137.0 | 26.2 | 27.8 | 17.0 | 16.0 | 16.1 | 1.0 |
| M30 | 130.0 | 140.5 | 29.2 | 30.8 | 18.7 | 17.7 | 19.8 | 1.0 |
| (M33) | 133.0 | 145.0 | 32.0 | 34.0 | 21.0 | 20.0 | 22.1 | 1.0 |
| M36 | 136.0 | 148.0 | 35.0 | 37.0 | 22.5 | 21.5 | 23.6 | 1.0 |
| (M39) | 139.0 | 152.0 | 38.0 | 40.0 | 25.0 | 24.0 | 26.1 | 1.0 |
| M42 | 142.0 | 155.5 | 41.0 | 43.0 | 26.0 | 25.0 | 27.1 | 1.2 |
| (M45) | 145.0 | 160.0 | 44.0 | 46.0 | 28.0 | 27.0 | 29.1 | 1.6 |
| M48 | 148.0 | 163.0 | 47.0 | 49.0 | 30.0 | 29.0 | 31.1 | 1.6 |
DIA (D)
(M12)
B (MIN)112.0
B (MAX)118.0
DS (MIN)11.3
DS (MAX)12.7
K (NOM)8.0
K (MIN)7.3
K (MAX)8.8
R (MIN)0.5
M16
B (MIN)116.0
B (MAX)122.0
DS (MIN)15.3
DS (MAX)16.7
K (NOM)10.0
K (MIN)9.3
K (MAX)10.8
R (MIN)0.6
M20
B (MIN)120.0
B (MAX)127.5
DS (MIN)19.2
DS (MAX)20.8
K (NOM)12.5
K (MIN)11.6
K (MAX)13.4
R (MIN)0.8
(M22)
B (MIN)122.0
B (MAX)131.0
DS (MIN)21.2
DS (MAX)22.8
K (NOM)14.0
K (MIN)13.1
K (MAX)14.9
R (MIN)0.8
M24
B (MIN)124.0
B (MAX)133.0
DS (MIN)23.2
DS (MAX)24.8
K (NOM)15.0
K (MIN)14.1
K (MAX)15.9
R (MIN)0.8
(M27)
B (MIN)127.0
B (MAX)137.0
DS (MIN)26.2
DS (MAX)27.8
K (NOM)17.0
K (MIN)16.0
K (MAX)18.1
R (MIN)1.0
M30
B (MIN)130.0
B (MAX)140.5
DS (MIN)29.2
DS (MAX)30.8
K (NOM)18.7
K (MIN)17.7
K (MAX)19.8
R (MIN)1.0
(M33)
B (MIN)133.0
B (MAX)145.0
DS (MIN)32.0
DS (MAX)34.0
K (NOM)21.0
K (MIN)20.0
K (MAX)22.1
R (MIN)1.0
M36
B (MIN)136.0
B (MAX)148.0
DS (MIN)35.0
DS (MAX)37.0
K (NOM)22.5
K (MIN)21.5
K (MAX)23.6
R (MIN)1.0
(M39)
B (MIN)139.0
B (MAX)152.0
DS (MIN)38.0
DS (MAX)40.0
K (NOM)25.0
K (MIN)24.0
K (MAX)26.1
R (MIN)1.0
M42
B (MIN)142.0
B (MAX)155.5
DS (MIN)41.0
DS (MAX)43.0
K (NOM)26.0
K (MIN)25.0
K (MAX)27.1
R (MIN)1.2
(M45)
B (MIN)145.0
B (MAX)160.0
DS (MIN)44.0
DS (MAX)46.0
K (NOM)28.0
K (MIN)27.0
K (MAX)29.1
R (MIN)1.6
M48
B (MIN)148.0
B (MAX)163.0
DS (MIN)47.0
DS (MAX)49.0
K (NOM)30.0
K (MIN)29.0
K (MAX)31.1
R (MIN)1.6
| DIA (D) | S (MIN) | S (MAX) | F (NOM) | F (MIN) | F (MAX) | V (MIN) | V (MAX) | X (MAX) |
|---|---|---|---|---|---|---|---|---|
| (M12) | 18.16 | 19.00 | 6.00 | 5.25 | 6.75 | 11.80 | 12.70 | 4.30 |
| M16 | 23.16 | 24.00 | 8.00 | 7.25 | 8.75 | 15.30 | 16.70 | 5.00 |
| M20 | 29.16 | 30.00 | 10.00 | 9.25 | 10.75 | 19.16 | 20.84 | 6.30 |
| (M22) | 31.16 | 32.00 | 11.00 | 10.25 | 11.75 | 21.16 | 27.84 | 6.30 |
| M24 | 35.00 | 36.00 | 12.00 | 11.10 | 12.90 | 23.16 | 24.84 | 7.50 |
| (M27) | 40.00 | 41.00 | 13.50 | 12.60 | 14.40 | 26.16 | 27.84 | 7.50 |
| M30 | 45.00 | 46.00 | 15.00 | 14.10 | 15.90 | 29.16 | 30.84 | 9.00 |
| (M33) | 46.80 | 50.00 | 16.50 | 15.60 | 17.40 | 32.00 | 34.00 | 9.00 |
| M36 | 53.80 | 55.00 | 18.00 | 17.10 | 18.90 | 35.00 | 37.00 | 10.00 |
| (M39) | 58.10 | 60.00 | 19.50 | 18.45 | 20.55 | 38.00 | 40.00 | 10.00 |
| M42 | 63.10 | 65.00 | 21.00 | 19.95 | 22.05 | 43.00 | 41.00 | 11.00 |
| (M45) | 68.10 | 70.00 | 22.50 | 21.45 | 23.55 | 44.00 | 46.00 | 11.00 |
| M48 | 73.10 | 75.00 | 24.00 | 22.95 | 25.05 | 47.00 | 49.00 | 12.50 |
DIA (D)
(M12)
S (MIN)18.16
S (MAX)19.00
F (NOM)6.00
F (MIN)5.25
F (MAX)6.75
V (MIN)11.00
V (MAX)12.70
X (MAX)4.40
M16
S (MIN)23.16
S (MAX)24.00
F (NOM)8.00
F (MIN)7.25
F (MAX)8.75
V (MIN)15.30
V (MAX)16.70
X (MAX)5.00
M20
S (MIN)29.16
S (MAX)30.00
F (NOM)10.00
F (MIN)9.25
F (MAX)10.75
V (MIN)19.16
V (MAX)20.84
X (MAX)6.30
(M22)
S (MIN)31.16
S (MAX)32.00
F (NOM)11.00
F (MIN)10.25
F (MAX)11.75
V (MIN)21.16
V (MAX)27.84
X (MAX)6.30
M24
S (MIN)35.00
S (MAX)36.00
F (NOM)12.00
F (MIN)11.10
F (MAX)12.90
V (MIN)23.16
V (MAX)24.84
X (MAX)7.50
(M27)
S (MIN)40.00
S (MAX)41.00
F (NOM)13.50
F (MIN)12.60
F (MAX)14.40
V (MIN)26.16
V (MAX)27.84
X (MAX)7.50
M30
S (MIN)45.00
S (MAX)46.00
F (NOM)15.00
F (MIN)14.10
F (MAX)15.90
V (MIN)29.16
V (MAX)30.84
X (MAX)9.00
(M33)
S (MIN)46.80
S (MAX)50.00
F (NOM)16.50
F (MIN)15.60
F (MAX)17.40
V (MIN)32.00
V (MAX)34.00
X (MAX)9.00
M36
S (MIN)53.80
S (MAX)55.00
F (NOM)18.00
F (MIN)17.10
F (MAX)18.90
V (MIN)35.00
V (MAX)37.00
X (MAX)10.00
(M39)
S (MIN)58.10
S (MAX)60.00
F (NOM)19.50
F (MIN)18.45
F (MAX)20.55
V (MIN)38.00
V (MAX)40.00
X (MAX)10.00
M42
S (MIN)63.10
S (MAX)65.00
F (NOM)21.00
F (MIN)19.95
F (MAX)22.05
V (MIN)43.00
V (MAX)41.00
X (MAX)11.00
(M45)
S (MIN)68.10
S (MAX)70.00
F (NOM)22.50
F (MIN)21.45
F (MAX)23.55
V (MIN)44.00
V (MAX)46.00
X (MAX)11.00
M48
S (MIN)73.10
S (MAX)75.00
F (NOM)24.00
F (MIN)22.95
F (MAX)25.05
V (MIN)47.00
V (MAX)49.00
X (MAX)12.50
Dimensions in millimetres
Sizes in brackets are non-preferred sizes.
Available in Grade 4.6 and 8.8 Steel
Other materials manufactured on request.