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PETROCHEMICAL

Petrochemical Fasteners

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Hex Connecting Nut

I-Rod / Nu-Bolts

PLAIN WASHERS (IMPERIAL)

BS3410 TABLE 3

DIA D1 (MAX) D2 (MAX) LIGHT PATTERN T (SWG) LIGHT PATTERN T (INCH) HEAVY PATTERN T (SWG) HEAVY PATTERN T (INCH)
1/40.270.56----
5/160.330.6315.000.07190.040
3/80.400.7515.000.07180.048
7/160.460.8813.000.09180.048
1/20.521.0013.000.09170.056
9/160.591.1312.000.10170.056
5/80.661.2511.000.12150.072
3/40.781.5010.000.13150.072
7/80.911.639.000.14150.072
11.031.888.000.16150.072
1-1/81.162.137.000.18130.092
1-1/41.282.387.000.18110.116
1-3/81.412.636.000.19--
1-1/21.532.886.000.19--
1-3/41.783.385.000.21--
22.033.635.000.21--
DIA
1/4
D1 (MAX)0.27
D2 (MAX)0.56
Light Pattern T (SWG)-
Light Pattern T (INCH)-
Heavy Pattern T (SWG)-
Heavy Pattern T (INCH)-
5/16
D1 (MAX)0.33
D2 (MAX)0.63
Light Pattern T (SWG)15.00
Light Pattern T (INCH)0.07
Heavy Pattern T (SWG)19
Heavy Pattern T (INCH)0.040
3/8
D1 (MAX)0.40
D2 (MAX)0.75
Light Pattern T (SWG)15.00
Light Pattern T (INCH)0.07
Heavy Pattern T (SWG)18
Heavy Pattern T (INCH)0.048
7/16
D1 (MAX)0.46
D2 (MAX)0.88
Light Pattern T (SWG)13.00
Light Pattern T (INCH)0.09
Heavy Pattern T (SWG)18
Heavy Pattern T (INCH)0.048
1/2
D1 (MAX)0.52
D2 (MAX)1.00
Light Pattern T (SWG)13.00
Light Pattern T (INCH)0.09
Heavy Pattern T (SWG)17
Heavy Pattern T (INCH)0.056
9/16
D1 (MAX)0.59
D2 (MAX)1.13
Light Pattern T (SWG)12.00
Light Pattern T (INCH)0.10
Heavy Pattern T (SWG)17
Heavy Pattern T (INCH)0.056
5/8
D1 (MAX)0.66
D2 (MAX)1.25
Light Pattern T (SWG)11.00
Light Pattern T (INCH)0.12
Heavy Pattern T (SWG)15
Heavy Pattern T (INCH)0.072
3/4
D1 (MAX)0.78
D2 (MAX)1.50
Light Pattern T (SWG)10.00
Light Pattern T (INCH)0.13
Heavy Pattern T (SWG)15
Heavy Pattern T (INCH)0.072
7/8
D1 (MAX)0.91
D2 (MAX)1.63
Light Pattern T (SWG)9.00
Light Pattern T (INCH)0.14
Heavy Pattern T (SWG)15
Heavy Pattern T (INCH)0.072
1
D1 (MAX)1.03
D2 (MAX)1.88
Light Pattern T (SWG)8.00
Light Pattern T (INCH)0.16
Heavy Pattern T (SWG)15
Heavy Pattern T (INCH)0.072
1-1/8
D1 (MAX)1.16
D2 (MAX)2.13
Light Pattern T (SWG)7.00
Light Pattern T (INCH)0.18
Heavy Pattern T (SWG)13
Heavy Pattern T (INCH)0.092
1-1/4
D1 (MAX)1.28
D2 (MAX)2.38
Light Pattern T (SWG)7.00
Light Pattern T (INCH)0.18
Heavy Pattern T (SWG)11
Heavy Pattern T (INCH)0.116
1-3/8
D1 (MAX)1.41
D2 (MAX)2.63
Light Pattern T (SWG)6.00
Light Pattern T (INCH)0.19
Heavy Pattern T (SWG)-
Heavy Pattern T (INCH)-
1-1/2
D1 (MAX)1.53
D2 (MAX)2.88
Light Pattern T (SWG)6.00
Light Pattern T (INCH)0.19
Heavy Pattern T (SWG)-
Heavy Pattern T (INCH)-
1-3/4
D1 (MAX)1.78
D2 (MAX)3.38
Light Pattern T (SWG)5.00
Light Pattern T (INCH)0.21
Heavy Pattern T (SWG)-
Heavy Pattern T (INCH)-
2
D1 (MAX)2.03
D2 (MAX)3.63
Light Pattern T (SWG)5.00
Light Pattern T (INCH)0.21
Heavy Pattern T (SWG)-
Heavy Pattern T (INCH)-
  • Dimensions in inches

  • Available in Mild Steel and A2 & A4 Stainless Steel

  • Other materials manufactured on request

PLAIN WASHERS (IMPERIAL)

BS3410 TABLE 7

DIA D1 D2 T (SWG) T (Inch)
1/40.280.6316.00
5/160.340.7514.000.08
3/80.420.8814.000.08
7/160.471.0012.000.10
1/20.561.1312.000.10
9/160.631.2510.000.13
5/80.691.3810.000.13
3/40.811.639.000.14
7/80.941.888.000.16
11.062.137.000.18
1.1/81.192.387.000.18
1.1/41.382.636.000.19
1.3/81.502.886.000.19
1.1/21.633.136.000.19
1.5/81.753.385.000.21
1.3/41.883.635.000.21
1.7/82.003.885.000.21
22.134.135.000.21
DIA
1/4
D10.28
D20.63
T (SWG)16.00
T (Inch)-
5/16
D10.34
D20.75
T (SWG)14.00
T (Inch)0.08
3/8
D10.42
D20.88
T (SWG)14.00
T (Inch)0.08
7/16
D10.47
D21.00
T (SWG)12.00
T (Inch)0.10
1/2
D10.56
D21.13
T (SWG)12.00
T (Inch)0.10
9/16
D10.63
D21.25
T (SWG)10.00
T (Inch)0.13
5/8
D10.69
D21.38
T (SWG)10.00
T (Inch)0.13
3/4
D10.81
D21.63
T (SWG)9.00
T (Inch)0.14
7/8
D10.94
D21.88
T (SWG)8.00
T (Inch)0.16
1
D11.06
D22.13
T (SWG)7.00
T (Inch)0.18
1 1/8
D11.19
D22.38
T (SWG)7.00
T (Inch)0.18
1 1/4
D11.38
D22.63
T (SWG)6.00
T (Inch)0.19
1 3/8
D11.50
D22.88
T (SWG)6.00
T (Inch)0.19
1 1/2
D11.63
D23.13
T (SWG)6.00
T (Inch)0.19
1 5/8
D11.75
D23.38
T (SWG)5.00
T (Inch)0.21
1 3/4
D11.88
D23.63
T (SWG)5.00
T (Inch)0.21
1 7/8
D12.00
D23.88
T (SWG)5.00
T (Inch)0.21
2
D12.13
D24.13
T (SWG)5.00
T (Inch)0.21
  • Dimensions in inches

  • Available in Mild Steel and A2 & A4 Stainless Steel

  • Other materials manufactured on request