Locking disc spring washer, shape M Spring steel hardened 420-510 HV10, zinc-flake coated

Name: Locking disc spring washer, shape M Spring steel hardened 420-510 HV10, zinc-flake coated
Brand: Würth
SKU: 04014

Steel zinc-flake silver type M
WSH-SER-M-(FLZN480H)-D4,1

Art.-no. 04014

EAN 4024835256216

All versions

Specification

Type M (medium): up to and including screw connections of strength class 8.8 with normal head contact

Protection type: Screw retainer

Friction locking thanks to spring force

Mechanical interlock thanks to specific surface stamping

Protects the counter surface from damage (washer does not turn during installation)

Minimal tightening torque distribution

Application

Application area

Machine and system construction, drive technology, conveyor technology, commercial vehicles, construction machines, vehicle construction, agricultural technology, the food industry etc.

Technical information


Suitable for screw thread	M4
Internal diameter (d₁)	4.1 mm
Outer diameter (d₂)	10.2 mm
Height (h₁)	1.5 mm
Thickness (s₁)	1 mm
Material	Spring steel
Min./max. Vickers hardness, HV	420-510 HV
Surface	Flake zinc silver
RoHS-compliant	Yes
Corrosion protection period	480 h
Form	M
Locking device operating principle	Serrated lock washer
Locking function	Embedding locking device

Comparison of locking disc spring washers and lock washers
Locking disc spring washer	Lock washer with no DIN standard
+ Twice as secure: spring-secured friction fit and positive locking + Minimal tightening torque distribution + Application range up to approx. 350°C + Reusable + Protection of the counter surface; no turning	Without a DIN standard, lock washers become a safety risk! - Very high tightening torque distribution - Only suitable for locking screws 5.8 - In the worst case scenario, lock washers can wear through surfaces and thereby promote a drop in the preload force. - No protection against unscrewing - Lock washers are not reusable - Lock washers tend to expand (risk of breakage) - They turn during tightening and loosening -> This damages the surface/counter surface