Durlok Flange Bolts

Durlok flange bolts are high-grade anti-vibration hexagon head bolts with a serrated underside to the head that prevents any loosening from jarring or vibration. They are generally used in engineering applications.

Durlok bolts are made by leading manufacturer Unbrako. They have a property class of 12.9, which is one of the highest grades of bolts available. They have a tensile strength of 1220N / mm2 min.

All threads are metric coarse.

Click here to view Durlok nuts.

Durlok Flange Bolts
Guides & Tips
Delivery & Returns

M6 x 16mm - Durlok Flange Bolt - Self Colour - Pack of 10

CODE: DFBMCSC06016

£17.57 £21.08

Pitch:

1.00P

Threads Per Inch:

25.4

Grade:

Grade 12.9

Diameter:

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

16mm

Spanner Size:

10mm

Tapping Drill Size:

5mm

MORE INFO

M6 x 16mm - Durlok Flange Bolt - Self Colour - Pack of 50

CODE: DFBMCSC0601650

£31.10 £37.32

Pitch:

1.00P

Threads Per Inch:

25.4

Grade:

Grade 12.9

Diameter:

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

16mm

Spanner Size:

10mm

Tapping Drill Size:

5mm

MORE INFO

M6 x 20mm - Durlok Flange Bolt - Self Colour - Pack of 10

CODE: DFBMCSC06020

£18.53 £22.24

Pitch:

1.00P

Threads Per Inch:

25.4

Grade:

Grade 12.9

Diameter:

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

20mm

Spanner Size:

10mm

Tapping Drill Size:

5mm

MORE INFO

M6 x 25mm - Durlok Flange Bolt - Self Colour - Pack of 10

CODE: DFBMCSC06025

£19.54 £23.45

Pitch:

1.00P

Threads Per Inch:

25.4

Grade:

Grade 12.9

Diameter:

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

25mm

Spanner Size:

10mm

Tapping Drill Size:

5mm

MORE INFO

M6 x 30mm - Durlok Flange Bolt - Self Colour - Pack of 10

CODE: DFBMCSC06030

£19.81 £23.77

Pitch:

1.00P

Threads Per Inch:

25.4

Grade:

Grade 12.9

Diameter:

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

30mm

Spanner Size:

10mm

Tapping Drill Size:

5mm

MORE INFO

M8 x 12mm - Durlok Flange Bolt - Self Colour - Pack of 10

CODE: DFBMCSC08012

£17.88 £21.46

Pitch:

1.25P

Threads Per Inch:

20.3

Grade:

Grade 12.9

Diameter:

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

12mm

Spanner Size:

13mm

Tapping Drill Size:

6.8mm

MORE INFO

M8 x 20mm - Durlok Flange Bolt - Self Colour - Pack of 10

CODE: DFBMCSC08020

£19.52 £23.42

Pitch:

1.25P

Threads Per Inch:

20.3

Grade:

Grade 12.9

Diameter:

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

20mm

Spanner Size:

13mm

Tapping Drill Size:

6.8mm

MORE INFO

M8 x 30mm - Durlok Flange Bolt - Self Colour - Pack of 10

CODE: DFBMCSC08030

£20.28 £24.34

Pitch:

1.25P

Threads Per Inch:

20.3

Grade:

Grade 12.9

Diameter:

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

30mm

Spanner Size:

13mm

Tapping Drill Size:

6.8mm

MORE INFO

M8 x 40mm - Durlok Flange Bolt - Self Colour - Pack of 10

CODE: DFBMCSC08040

£10.07 £12.08

Pitch:

1.25P

Threads Per Inch:

20.3

Grade:

Grade 12.9

Diameter:

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

40mm

Spanner Size:

13mm

Tapping Drill Size:

6.8mm

MORE INFO

M10 x 16mm - Durlok Flange Bolt - Self Colour - Pack of 10

CODE: DFBMCSC10016

£17.43 £20.92

Pitch:

1.50P

Threads Per Inch:

Grade:

Grade 12.9

Diameter:

M10

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

16mm

Spanner Size:

17mm

Tapping Drill Size:

8.5mm

MORE INFO

M10 x 25mm - Durlok Flange Bolt - Self Colour - Pack of 5

CODE: DFBMCSC10025

£13.28 £15.94

Pitch:

1.50P

Threads Per Inch:

Grade:

Grade 12.9

Diameter:

M10

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

25mm

Spanner Size:

17mm

Tapping Drill Size:

8.5mm

MORE INFO

M10 x 30mm - Durlok Flange Bolt - Self Colour - Pack of 5

CODE: DFBMCSC10030

£16.25 £19.50

Pitch:

1.50P

Threads Per Inch:

Grade:

Grade 12.9

Diameter:

M10

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

30mm

Spanner Size:

17mm

Tapping Drill Size:

8.5mm

MORE INFO

M10 x 40mm - Durlok Flange Bolt - Self Colour - Pack of 5

CODE: DFBMCSC10040

£13.10 £15.72

Pitch:

1.50P

Threads Per Inch:

Grade:

Grade 12.9

Diameter:

M10

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

40mm

Spanner Size:

17mm

Tapping Drill Size:

8.5mm

MORE INFO

M12 x 30mm - Durlok Flange Bolt - Self Colour - Pack of 5

CODE: DFBMCSC12030

£11.96 £14.35

Pitch:

1.75P

Threads Per Inch:

14.5

Grade:

Grade 12.9

Diameter:

M12

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

30mm

Spanner Size:

19mm

Tapping Drill Size:

10.2mm

MORE INFO

M12 x 40mm - Durlok Flange Bolt - Self Colour - Pack of 5

CODE: DFBMCSC12040

£13.55 £16.26

Pitch:

1.75P

Threads Per Inch:

14.5

Grade:

Grade 12.9

Diameter:

M12

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

40mm

Spanner Size:

19mm

Tapping Drill Size:

10.2mm

MORE INFO

M14 x 40mm - Durlok Flange Bolt - Self Colour - Pack of 5

CODE: DFBMCSC14040

£16.47 £19.76

Pitch:

2.00P

Threads Per Inch:

12.5

Grade:

Grade 12.9

Diameter:

M14

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

40mm

Spanner Size:

22mm

Tapping Drill Size:

12mm

MORE INFO

M16 x 40mm - Durlok Flange Bolt - Self Colour - Pack of 5

CODE: DFBMCSC16040

£16.78 £20.14

Pitch:

2.00P

Diameter:

M16

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

40mm

Spanner Size:

24mm

MORE INFO

M16 x 50mm - Durlok Flange Bolt - Self Colour - Pack of 5

CODE: DFBMCSC16050

£18.18 £21.82

Pitch:

2.00P

Diameter:

M16

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

50mm

Spanner Size:

24mm

MORE INFO

M16 x 60mm - Durlok Flange Bolt - Self Colour - Pack of 4

CODE: DFBMCSC16060

£23.87 £28.64

Pitch:

2.00P

Threads Per Inch:

12.5

Grade:

Grade 12.9

Diameter:

M16

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

60mm

Spanner Size:

24mm

Tapping Drill Size:

14mm

MORE INFO

M16 x 70mm - Durlok Flange Bolt - Self Colour - Pack of 2

CODE: DFBMCSC16070

Only 1 pack left in stock

£18.94 £22.73

Pitch:

2.00P

Threads Per Inch:

12.5

Grade:

Grade 12.9

Diameter:

M16

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

70mm

Spanner Size:

24mm

Tapping Drill Size:

14mm

MORE INFO

M20 x 45mm - Durlok Flange Bolt - Self Colour - Pack of 5

CODE: DFBMCSC20045

£35.75 £42.90

Pitch:

2.50P

Threads Per Inch:

10.1

Grade:

Grade 12.9

Diameter:

M20

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

45mm

Spanner Size:

30mm

Tapping Drill Size:

17.5mm

MORE INFO

M20 x 50mm - Durlok Flange Bolt - Self Colour - Pack of 5

CODE: DFBMCSC20050

£35.80 £42.96

Pitch:

2.50P

Threads Per Inch:

10.1

Grade:

Grade 12.9

Diameter:

M20

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

50mm

Spanner Size:

30mm

Tapping Drill Size:

17.5mm

MORE INFO

M20 x 60mm - Durlok Flange Bolt - Self Colour - Pack of 6

CODE: DFBMCSC20060

Only 1 pack left in stock

£35.80 £42.96

Pitch:

2.50P

Threads Per Inch:

10.1

Grade:

Grade 12.9

Diameter:

M20

Material:

Steel

Finish:

Self Colour

Head Type:

Flange Head

Thread Type:

Metric Coarse

Length Under Head:

60mm

Spanner Size:

30mm

Tapping Drill Size:

17.5mm

MORE INFO

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