Metric Washers, Form C, A2/ 304 Stainless Steel

6mm, Form C, Washer, A2 / 304 Stainless Steel Fixaball, sells 6mm, Form C, Washer, A2 / 304 Stainless Steel. Form C Washer Description A form C washer has the same...
£2.07

6mm, Form C, Washer, A2 / 304 Stainless Steel

Fixaball, sells 6mm, Form C, Washer, A2 / 304 Stainless Steel.

Form C Washer Description

A form C washer has the same thickness as a form A washer but has a larger outside diameter. Form C washers are thicker than form B washers and have a larger outside diameter.

Washers

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)

Material - Stainless steel washers are applied to occasionally wet environments (Outside).

 

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

Standard, Free Delivery is Royal Mail, 2nd Class (2-5 days, most likely 2 days). For a faster delivery time, select 1st class or courier at checkout. 

Please make your 'internal diameter''no. of items in pack' and 'quantity' of packs selection from the drop down menus.

 

Form C, Washer, A2 / 304 Stainless Steel, Diameter Available

A2 - 304 St/St Form C Washers BS 4320C – M4
A2 - 304 St/St Form C Washers BS 4320C – M5
A2 - 304 St/St Form C Washers BS 4320C – M6
A2 - 304 St/St Form C Washers BS 4320C – M8
A2 - 304 St/St Form C Washers BS 4320C – M10
A2 - 304 St/St Form C Washers BS 4320C – M12
A2 - 304 St/St Form C Washers BS 4320C – M16

 

 

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 -

Washer Forms, Comparison

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.