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Flat Rnd Washer Hardened - ZFS - M20x37x3 (Box=50)

ISO 7089 / 300 HV - M20
Stock Code:
WRV3FM20
$6.85 incl GST

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Description

DESCRIPTION

Flat Round Washer Hardened - Zinc Flake Silver - M20x37x3 (Box=50)

(Price per unit)

Hardened Flat washers are used to increase the bearing surface beneath a nut or bolt head, distributing the clamping force over a larger area.

They are particularly useful when fastening soft materials or components with oversized or irregularly shaped holes. A flat washer also provides a smooth, even surface for the nut or bolt head to bear against, helping to improve load distribution and reduce the risk of surface damage.

Flat washers are the standard washer used in most bolted connections and are typically installed beneath the nut, the bolt head, or both.

Note To ensure optimum strength, corrosion resistance, and long-term performance, flat washers should be selected from a material compatible with the bolt and nut. For example, use galvanised washers with galvanised fasteners or Zinc Flake Silver washers with Zinc Flake Silver metal fasteners.

Product

FLAT ROUND HARDENED WASHER
 
Finish
ZINC FLAKE SILVER >1000HRS
 
ZFS provides high corrosion resistance without introducing any risk of hydrogen embrittlement. Thin coating thickness allows external thread to be mated with standard internal thread (no over tapping)
 
Size
M20
 
Length / Dimension
x37.0x3.0
 
Specification / Reference
ISO 7089 / 300 HV
 
Material:
Typically manufactured from hardened carbon steel or alloy steel that has been heat-treated to achieve the specified hardness range.
 
Hardness Requirement:
 
300 HV: The washer has a hardness in the 300–400 HV range (Vickers hardness), making it suitable for higher-strength fasteners. (PC10.9 Bolts)
 
Note:
The applicable washer standard and mechanical requirements should be confirmed against the intended application and fastener system.
 
Product Guides & Technical Resources
 
 
Hobson washers product guide
 
Types of washers
 
Washer selection guide
 
Washer gauge conversion chart
 
Hobson product finish comparison
 
Hobson flat round zinc flake washer
 
Zinc flake coating 

Details

  • Brand:
    Hobson
  • Metric/Imperial:
    Metric
  • Type:
    Each