Locking disc spring washer, shape Z A4 stainless steel, plain
A4 stainless steel, type Z
WSH-SER-A4-Z-D8,2
Register now and access more than 125,000 products
- Type Z: for cheese head and hexagon socket screws
- From a technical point of view and due to the installation space, the spring properties of this type are significantly lower
- Protection type: Screw retainer
- A4 stainless steel material number 1.4401
- 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
Datasheets(X)
CAD data (available after login)
Machine and system construction, drive technology, conveyor technology, commercial vehicles, construction machines, vehicle construction, agricultural technology, the food industry etc.
 | |
Suitable for screw thread | M8 |
Internal diameter (d1) | 8.2 mm |
Outer diameter (d2) | 12.7 mm |
Height (h1) | 1.7 mm |
Thickness (s1) | 1.4 mm |
Material | Stainless steel A4 |
Surface | Plain |
RoHS-compliant | Yes |
Form | Z |
Suitable for | Cylinder head and hexagon head bolts with normal head contact |
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 |
Last viewed
Slotted round nuts DIN 546, A4 stainless steel, plain
Hexagon socket set screw with ring cutter ISO 4029, A2 stainless steel, 21H, plain
Comfort FFP3 R D breathing mask - preformed 3M With Cool-Flow exhalation valve up to 30 times the threshold value
Cable and pipe spacer clip with longitudinal hole
Multi-purpose drill bit MFD-S Plus
Screw with flattened half round head with collar and hexagon socket ISO 7380-2, A2-070 stainless steel, plain
GEFU® thread-rolling screw With Taptite 2000® thread, hexagon head with collar and hexalobular drive (TXplus)
Hexagonal nut, 1.5xd high DIN 6330, steel 10, plain
Replacement spray head Variator for RAPID 2-component primer filler
Work dungarees