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Home   /   Bolts and Machine Screws - Metric   /   Unbrako Durlok Hexagon Flange Screws in Black Oxide High Tensile Steel Class 12.9

Unbrako Durlok Hexagon Flange Screws in Black Oxide High Tensile Steel Class 12.9

Unbrako Durlok® self locking, anti vibration hex head flange bolts. These are serrated flanged hex head bolts, which can be paired with the Unbrako Durlok® self locking serrated flanged nut. They both have a high tensile strength of 12.9 and a black oxide/self coloured finish. These heavy duty fasteners are suitable for situations where vibration and jarring occurs and where the joint is subject to high loads. They can be reused, as they are unlikely to be damaged by the adjoining surfaces. Durlok® Bolts are manufactured from alloy steel and are through hardened to give the same hardness from the tooth surface to the core. Durlok® Fasteners can be used at high temperatures up to 300°C.
Unbrako Durlok Hexagon Flange Screws in BO-12.9 image
Unbrako logo
technical drawing of Unbrako Durlok Hexagon Flange Screws
Technical Summary
Standard ISO 1665 (DIN 6921)
all dimensions in millimetres (mm)
Datasheet
Unbrako Engineering Guide

< View All Bolts and Machine Screws - Metric
Description Sale Qtys Qty Price Breakdown Despatch Estimate
M6 x 12mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59450 - 75 in stock
single bolt for £2.56
or box of 15 for £17.01
or bulk of 75 for £68.84
£0.00  
M6 x 16mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59451 - 170 in stock
single bolt for £2.16
or box of 20 for £17.44
or bulk of 100 for £70.51
£0.00  
M6 x 20mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59452 - 181 in stock
single bolt for £2.18
or box of 20 for £17.62
or bulk of 100 for £71.23
£0.00  
M6 x 25mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59453 - 79 in stock
single bolt for £2.37
or box of 20 for £19.20
or bulk of 100 for £77.05
£0.00  
M6 x 30mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59454 - 125 in stock
single bolt for £2.58
or box of 15 for £17.32
or bulk of 75 for £70.10
£0.00  
M8 x 12mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59455 - 619 in stock
single bolt for £2.61
or box of 15 for £17.67
or bulk of 75 for £71.53
£0.00  
M8 x 16mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59456 - 202 in stock
single bolt for £2.48
or box of 20 for £20.86
or bulk of 100 for £82.73
£0.00  
M8 x 20mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59457 - 255 in stock
single bolt for £2.56
or box of 20 for £22.60
or bulk of 100 for £88.94
£0.00  
M8 x 25mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59458 - 641 in stock
single bolt for £2.67
or box of 15 for £18.68
or bulk of 75 for £74.92
£0.00  
M8 x 30mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59459 - 830 in stock
single bolt for £2.77
or box of 15 for £20.34
or bulk of 75 for £80.85
£0.00  
M8 x 35mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59460 - 247 in stock
single bolt for £2.89
or box of 15 for £22.13
or bulk of 75 for £87.28
£0.00  
M8 x 40mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59461 - 228 in stock
single bolt for £2.99
or box of 15 for £23.80
or bulk of 75 for £93.24
£0.00  
M8 x 45mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59462 - 155 in stock
single bolt for £3.24
or box of 10 for £18.52
or bulk of 50 for £74.48
£0.00  
M8 x 50mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59463 - 48 in stock
single bolt for £3.37
or box of 10 for £19.82
or bulk of 50 for £79.16
£0.00  
M8 x 60mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59464 - 231 in stock
single bolt for £3.59
or box of 8 for £17.82
or bulk of 40 for £71.97
£0.00  
M10 x 16mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59465 - 257 in stock
single bolt for £2.80
or box of 15 for £20.85
or bulk of 75 for £82.40
£0.00  
M10 x 20mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59466 - 108 in stock
single bolt for £2.54
or box of 20 for £22.04
or bulk of 100 for £85.96
£0.00  
M10 x 25mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59467 - 188 in stock
single bolt for £2.63
or box of 15 for £18.02
or bulk of 75 for £71.69
£0.00  
M10 x 30mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59468 - 188 in stock
single bolt for £2.73
or box of 15 for £19.64
or bulk of 75 for £77.42
£0.00  
M10 x 35mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59469 - 933 in stock
single bolt for £2.96
or box of 15 for £23.27
or bulk of 75 for £90.54
£0.00  
M10 x 40mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59470 - 180 in stock
single bolt for £2.98
or box of 10 for £15.72
or bulk of 50 for £63.68
£0.00  
M10 x 45mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59471 - 46 in stock
single bolt for £3.25
or box of 10 for £18.65
or bulk of 50 for £74.22
£0.00  
M10 x 50mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59472 - 130 in stock
single bolt for £3.37
or box of 10 for £19.87
or bulk of 50 for £78.55
£0.00  
M12 x 20mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59473 - 93 in stock
single bolt for £3.27
or box of 10 for £18.81
or bulk of 50 for £74.71
£0.00  
M12 x 25mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59474 - 72 in stock
single bolt for £3.45
or box of 10 for £20.71
or bulk of 50 for £81.47
£0.00  
M12 x 30mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59475 - 177 in stock
single bolt for £3.42
or box of 10 for £20.42
or bulk of 50 for £80.17
£0.00  
M12 x 35mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59476 - 131 in stock
single bolt for £3.53
or box of 10 for £21.55
or bulk of 50 for £84.18
£0.00  
M12 x 40mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59477 - 110 in stock
single bolt for £3.68
or box of 8 for £18.57
or bulk of 40 for £73.63
£0.00  
M12 x 45mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59478 - 463 in stock
single bolt for £3.60
or box of 8 for £17.87
or bulk of 40 for £70.96
£0.00  
M12 x 50mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59479 - 200 in stock
single bolt for £3.74
or box of 8 for £18.98
or bulk of 40 for £74.89
£0.00  
M12 x 55mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59480 - 60 in stock
single bolt for £3.87
or box of 8 for £20.11
or bulk of 40 for £78.81
£0.00  
M12 x 60mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59481 - 51 in stock
single bolt for £4.20
or box of 6 for £17.26
or bulk of 30 for £68.99
£0.00  
M12 x 70mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59482 - 118 in stock
single bolt for £4.65
or box of 5 for £16.70
or bulk of 25 for £67.14
£0.00  
M12 x 80mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59483 - 29 in stock
single bolt for £4.81
or box of 5 for £17.55
or bulk of 25 for £70.02
£0.00  
M14 x 25mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59484 - 54 in stock
single bolt for £5.23
or box of 5 for £19.81
or bulk of 25 for £78.81
£0.00  
M14 x 30mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59485 - 28 in stock
single bolt for £5.39
or box of 5 for £20.69
or bulk of 25 for £81.88
£0.00  
M14 x 35mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59486 - 31 in stock
single bolt for £5.57
or box of 4 for £17.32
or bulk of 20 for £69.80
£0.00  
M14 x 40mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59487 - 39 in stock
single bolt for £5.70
or box of 4 for £17.90
or bulk of 20 for £71.82
£0.00  
M14 x 45mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59488 - 94 in stock
single bolt for £5.81
or box of 4 for £18.34
or bulk of 20 for £73.40
£0.00  
M14 x 50mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59489 - 34 in stock
single bolt for £6.09
or box of 4 for £19.53
or bulk of 20 for £77.63
£0.00  
M14 x 60mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59490 - 161 in stock
single bolt for £6.34
or box of 4 for £20.57
or bulk of 20 for £81.27
£0.00  
M16 x 30mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59491 - 91 in stock
single bolt for £9.73
or box of 3 for £25.86
or bulk of 15 for £102.52
£0.00  
M16 x 35mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59492 - 1 in stock
single bolt for £9.76
or box of 2 for £17.58
or bulk of 10 for £71.10
£0.00  
M16 x 40mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59493 - 81 in stock
single bolt for £9.76
or box of 2 for £17.59
or bulk of 10 for £71.12
£0.00  
M16 x 45mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59494 - 41 in stock
single bolt for £8.06
or box of 3 for £20.92
or bulk of 15 for £82.59
£0.00  
M16 x 50mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59495 - 75 in stock
single bolt for £8.25
or box of 3 for £21.54
or bulk of 15 for £84.69
£0.00  
M16 x 55mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59496 - 15 in stock
single bolt for £8.60
or box of 3 for £22.65
or bulk of 15 for £88.67
£0.00  
M16 x 60mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59497 - 30 in stock
single bolt for £9.09
or box of 3 for £24.22
or bulk of 15 for £94.28
£0.00  
M16 x 70mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59498 - 41 in stock
single bolt for £9.80
or box of 2 for £17.67
or bulk of 10 for £70.95
£0.00  
M16 x 80mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59499 - 32 in stock
single bolt for £10.17
or box of 2 for £18.44
or bulk of 10 for £73.71
£0.00  
M16 x 90mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59500 - 51 in stock
single bolt for £10.87
or box of 2 for £19.93
or bulk of 10 for £78.98
£0.00  
M16 x 100mm Unbrako Durlok Flange Bolt Hex Head in 12.9 Black / Self Colour
WF59501 - 22 in stock
single bolt for £11.55
or box of 2 for £21.39
or bulk of 10 for £84.18
£0.00  
single bolt for £2.56
or box of 15 for £17.01
or bulk of 75 for £68.84
£0.00
 
single bolt for £2.16
or box of 20 for £17.44
or bulk of 100 for £70.51
£0.00
 
single bolt for £2.18
or box of 20 for £17.62
or bulk of 100 for £71.23
£0.00
 
single bolt for £2.37
or box of 20 for £19.20
or bulk of 100 for £77.05
£0.00
 
single bolt for £2.58
or box of 15 for £17.32
or bulk of 75 for £70.10
£0.00
 
single bolt for £2.61
or box of 15 for £17.67
or bulk of 75 for £71.53
£0.00
 
single bolt for £2.48
or box of 20 for £20.86
or bulk of 100 for £82.73
£0.00
 
single bolt for £2.56
or box of 20 for £22.60
or bulk of 100 for £88.94
£0.00
 
single bolt for £2.67
or box of 15 for £18.68
or bulk of 75 for £74.92
£0.00
 
single bolt for £2.77
or box of 15 for £20.34
or bulk of 75 for £80.85
£0.00
 
single bolt for £2.89
or box of 15 for £22.13
or bulk of 75 for £87.28
£0.00
 
single bolt for £2.99
or box of 15 for £23.80
or bulk of 75 for £93.24
£0.00
 
single bolt for £3.24
or box of 10 for £18.52
or bulk of 50 for £74.48
£0.00
 
single bolt for £3.37
or box of 10 for £19.82
or bulk of 50 for £79.16
£0.00
 
single bolt for £3.59
or box of 8 for £17.82
or bulk of 40 for £71.97
£0.00
 
single bolt for £2.80
or box of 15 for £20.85
or bulk of 75 for £82.40
£0.00
 
single bolt for £2.54
or box of 20 for £22.04
or bulk of 100 for £85.96
£0.00
 
single bolt for £2.63
or box of 15 for £18.02
or bulk of 75 for £71.69
£0.00
 
single bolt for £2.73
or box of 15 for £19.64
or bulk of 75 for £77.42
£0.00
 
single bolt for £2.96
or box of 15 for £23.27
or bulk of 75 for £90.54
£0.00
 
single bolt for £2.98
or box of 10 for £15.72
or bulk of 50 for £63.68
£0.00
 
single bolt for £3.25
or box of 10 for £18.65
or bulk of 50 for £74.22
£0.00
 
single bolt for £3.37
or box of 10 for £19.87
or bulk of 50 for £78.55
£0.00
 
single bolt for £3.27
or box of 10 for £18.81
or bulk of 50 for £74.71
£0.00
 
single bolt for £3.45
or box of 10 for £20.71
or bulk of 50 for £81.47
£0.00
 
single bolt for £3.42
or box of 10 for £20.42
or bulk of 50 for £80.17
£0.00
 
single bolt for £3.53
or box of 10 for £21.55
or bulk of 50 for £84.18
£0.00
 
single bolt for £3.68
or box of 8 for £18.57
or bulk of 40 for £73.63
£0.00
 
single bolt for £3.60
or box of 8 for £17.87
or bulk of 40 for £70.96
£0.00
 
single bolt for £3.74
or box of 8 for £18.98
or bulk of 40 for £74.89
£0.00
 
single bolt for £3.87
or box of 8 for £20.11
or bulk of 40 for £78.81
£0.00
 
single bolt for £4.20
or box of 6 for £17.26
or bulk of 30 for £68.99
£0.00
 
single bolt for £4.65
or box of 5 for £16.70
or bulk of 25 for £67.14
£0.00
 
single bolt for £4.81
or box of 5 for £17.55
or bulk of 25 for £70.02
£0.00
 
single bolt for £5.23
or box of 5 for £19.81
or bulk of 25 for £78.81
£0.00
 
single bolt for £5.39
or box of 5 for £20.69
or bulk of 25 for £81.88
£0.00
 
single bolt for £5.57
or box of 4 for £17.32
or bulk of 20 for £69.80
£0.00
 
single bolt for £5.70
or box of 4 for £17.90
or bulk of 20 for £71.82
£0.00
 
single bolt for £5.81
or box of 4 for £18.34
or bulk of 20 for £73.40
£0.00
 
single bolt for £6.09
or box of 4 for £19.53
or bulk of 20 for £77.63
£0.00
 
single bolt for £6.34
or box of 4 for £20.57
or bulk of 20 for £81.27
£0.00
 
single bolt for £9.73
or box of 3 for £25.86
or bulk of 15 for £102.52
£0.00
 
single bolt for £9.76
or box of 2 for £17.58
or bulk of 10 for £71.10
£0.00
 
single bolt for £9.76
or box of 2 for £17.59
or bulk of 10 for £71.12
£0.00
 
single bolt for £8.06
or box of 3 for £20.92
or bulk of 15 for £82.59
£0.00
 
single bolt for £8.25
or box of 3 for £21.54
or bulk of 15 for £84.69
£0.00
 
single bolt for £8.60
or box of 3 for £22.65
or bulk of 15 for £88.67
£0.00
 
single bolt for £9.09
or box of 3 for £24.22
or bulk of 15 for £94.28
£0.00
 
single bolt for £9.80
or box of 2 for £17.67
or bulk of 10 for £70.95
£0.00
 
single bolt for £10.17
or box of 2 for £18.44
or bulk of 10 for £73.71
£0.00
 
single bolt for £10.87
or box of 2 for £19.93
or bulk of 10 for £78.98
£0.00
 
single bolt for £11.55
or box of 2 for £21.39
or bulk of 10 for £84.18
£0.00
 
Prices are subject to quantity discounts based on a sliding scale. Enter the desired quantity in the relevant box in the table above. This will automatically calculate a line price indicating the applicable rate for the quantities selected. All prices shown exclude VAT.
Unbrako logo
technical drawing of Unbrako Durlok Hexagon Flange Screws
Technical Summary
Standard ISO 1665 (DIN 6921)
all dimensions in millimetres (mm)
Datasheet
Unbrako Engineering Guide
FSB logo CBI logo