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M5 - M24, Washers, Form B, Zinc, BZP, DIN 125 B, BS4320 .

M5, M6, M8, M10, M12, M16, M20, M24, Washers, Form B, Zinc Plated, BZP, DIN 125 B, BS4320  Fixaball, sell all sizes of Form A, BZP, flat washers, at the best internet...
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M5, M6, M8, M10, M12, M16, M20, M24, Washers, Form B, Zinc Plated, BZP, DIN 125 B, BS4320 

Fixaball, sell all sizes of Form A, BZP, flat washers, at the best internet prices, with free post.

Orders placed before 2pm are usually dispatched same day (Mon-Fri).

Please make your size and pack quantity selection from the drop down menus.

Form B Washer Sizes Available at Fixaball:

  • M5
  • M6
  • M8
  • M10
  • M12
  • M16
  • M20
  • M24

A washer has multiple purposes depending on it’s’ shape, form and material. Generally speaking, a washer is used to:

  • protect the surface of fastened materials,
  • spread the load/ pressure at the hold points of fastened materials,
  • assist with tightening and loosening of a fastener,
  • control the spacing of connecting components
  • lock and secure nuts in place (shakeproof washers)

Washers - DIN 125 Form B Dimensions for Flat Washers

 

Form B Size d1 min d2 max s
M1 1.1 3 0.3
M1.2 1.3 3.5 0.3
M1.4 1.5 4 0.3
M1.6 1.7 4 0.3
M1.7 1.8 4.5 0.3
M2 2.2 5 0.3
M2.5 2.7 6 0.5
M2.6 2.8 7 0.5
M3 3.2 7 0.5
M3.5 3.7 8 0.5
M4 4.3 9 0.8
M5 5.3 10 1
M6 6.4 12 1.6
M7 7.4 14 1.6
M8 8.4 16 1.6
M10 10.5 20 2
M12 13 24 2.5
M14 15 28 2.5
M16 17 30 3
M18 19 34 3
M20 21 37 3
M22 23 39 3
M24 25 44 4
M27 28 50 4
M30 31 56 4
M33 34 60 5
M36 37 66 5
M39 40 72 6
M42 43 78 7
M45 46 85 7
M48 50 92 8
M52 54 98 8
M56 58 105 9
M60 62 110 9
M64 66 115 9
M68 70 120 10
M72 74 125 10
M76 78 135 10
M80 82 140 12
M85 87 145 12
M90 93 160 12
M100 104 175 14

 

Additional Information

A washer is a thin plate (typically disk-shaped) with a hole (typically in the middle) that is normally used to distribute the load of a threaded fastener, such as a screw or nut. Other uses are as a spacer, spring (belleville washer, wave washer), wear pad, preload indicating device, locking device, and to reduce vibration (rubber washer). Washers usually have an outer diameter (OD) about twice the width of their inner diameter (ID).

Washers are usually metal or plastic. High quality bolted joints require hardened steel washers to prevent the loss of pre-load due to Brinelling (permanent indentation) after the torque is applied.

Washers are important for preventing galvanic corrosion, particularly by insulating steel screws from aluminium surfaces and phosphor washers are used for high abrasion and corrosion resistance.

'Type' is not to be confused with 'form' (but often is). The British Standard for Metric Series Metal Washers (BS4320) written in 1968 coined the term 'form'. The forms go from A to D for Bright Metal and denote outside diameter and thickness. They can be summarised as -

  • Form A: Normal diameter, normal thickness (thick)
  • Form B: Normal diameter, light thickness
  • Form C: Large diameter (wide), normal thickness (thick)
  • Form D: Large diameter (wide), light thickness (thin)
  • Forms E to G relate to black metal washers.

Image is for illustrative purposes only.


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