M12 (12mm) 200HV Flat Washers (ISO 7089) - Marine Stainless Steel (A4)


Key Features

  • M12 Metric Thread Size (12mm)
  • For Use With Thread Size: M12 (12mm)
  • External Diameter (OD): 24mm
  • Thickness (T): 2.5mm
  • Material: 200HV Marine Stainless Steel (A4)
View Full Technical Specification.
Simple 90 day returns. Details.
Official AccuScrews Product.
$1.20 / each.
Buy more & save
Buy 4$0.97 / eachSave 19%
Buy 8$0.83 / eachSave 31%
Buy 14$0.74 / eachSave 38%
Buy 26$0.67 / eachSave 44%
Buy 50$0.62 / eachSave 49%
Buy 100$0.57 / eachSave 52%
Buy 200$0.46 / eachSave 62%
Buy 400$0.39 / eachSave 68%
Buy 1000$0.33 / eachSave 73%
Buy 2000$0.29 / eachSave 76%
Buy 4000$0.27 / eachSave 77%
Buy 8000$0.24 / eachSave 80%
Buy 16000$0.23 / eachSave 81%
Buy 32000$0.21 / eachSave 82%
Buy 128000$0.20 / eachSave 83%
256000 +Get A Quote
Get up to 123 Express Stock
Up to 3,923 1 Day
Up to 171,523 15 Days

Complete Your Project

Similar Engineers Also Viewed

M12 (12mm) 200HV Flat Washers (ISO 7089) - Marine Stainless Steel (A4) Technical Specification

M12 (12mm) 200HV Flat Washers (ISO 7089) - Marine Stainless Steel (A4) Drawing
External Diameter (D) Tolerance+0.52/-0mm
External Diameter (OD)24mm
For Use With Thread SizeM12 (12mm)
Internal Diameter (B) Tolerance+0.27/-0mm
Internal Diameter (ID)13mm
Manufacturing StandardISO 7089
Material200HV Marine Stainless Steel (A4)
Material Specification200HV Marine Stainless Steel (A4)
Metric or Imperial?Metric
Thickness (T)2.5mm
Thickness (T) Tolerance+0.4/-0mm

Product Certifications

Certificate of Conformity Included
Certificate of Conformity Included
RoHS Certified
RoHS Certified
REACH Certified
REACH Certified
Quality Approved

Download 3D Models

3D model downloads are free for our customers.

log in / sign up

M12 (12mm) 200HV Flat Washers (ISO 7089) - Marine Stainless Steel (A4) Description

The M12 (12mm) 200HV Flat Washers (ISO 7089) - Marine Stainless Steel (A4) has the following features:

  • ISO 7089 Manufacturing Standard
  • 13mm Internal Diameter (ID)
  • 24mm External Diameter (OD)
  • 2.5mm Thickness (T)
  • 200HV Marine Stainless Steel (A4) Material
  • 200HV Marine Stainless Steel (A4) Material Specification
  • Natural Finish
  • Metric Metric or Imperial?
  • +0.27/-0mm Internal Diameter (B) Tolerance
  • +0.52/-0mm External Diameter (D) Tolerance
  • +0.4/-0mm Thickness (T) Tolerance
  • M12 (12mm) For Use With Thread Size

Discover more about the Metric Flat Washers range

Flat Washers, one of Accu's Washer & Spacer range, are designed primarily to enhance the load-bearing capabilities of a threaded fastener, and are compatible with a wide range of Precision Screws. Flat Washers are versatile components with a variety of uses, including spacing, pre-load indication, and wear-protection.

Flat Washers are available in several variants with varying diameters and thicknesses. The most commonly used washers are forms A, B and C, with more specialised variants such as Penny Washers also available. Flat washer variants range from those with small external diameters and thicknesses, to very large washers with large external diameters.

Where a flat surface is not required, components such as Countersunk Washers or Spring Washers may be preferable.


Accu's standard range of Flat Washers is manufactured from A2, A4 and Bumax Stainless Steel, with Chemical Matte Blackening available. All Stainless Steel Washers are resistant to tarnishing and corrosion, but A4 Stainless Steel is specifically designed for use in marine environments.

Flat Washers can also be manufactured from a variety of specialist materials, including Aluminium, Brass, Phosphor Bronze, Nylon, PEEK, Polycetal and Titanium. Fibre and Rubber Flat Washers are intended to be pliable for sealing purposes.

Metric Flat Washers

Metric Flat Washers are available in sizes ranging from M1 to M56. This category includes only metric flat washers – Imperial Flat Washers in imperial sizes are available separately.

Shipping Information

Shipping Destinations:Worldwide.
View delivery information.
Weight Band (100 items):Between 0.5kg and 1kg. Add to cart to calculate exact weights.

Component History

Product First Available:Thursday, July 21, 2016
Stock Last Updated:08:52 pm
Saturday, November 27, 2021
Specification Last Updated:Saturday, November 27, 2021

APC / Barcodes

APC (Accu Product Code):HPW-M12-V1-A4
EAN13 (International Article No.):5057196589326
ASIN (Amazon Stock Identification No.):ASIN not defined.