Locking disc spring washer, shape M Spring steel hardened 420-510 HV10, zinc-flake coated
Steel zinc-flake silver type M
WSH-SER-M-(FLZN480H)-D12,4
Register now and access more than 125,000 products
- 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
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 | M12 |
Internal diameter (d1) | 12.4 mm |
Outer diameter (d2) | 27.25 mm |
Height (h1) | 2.85 mm |
Thickness (s1) | 1.8 mm |
Material | Spring steel |
Min./max. Vickers hardness, HV | 420-510 HV |
Surface | Flake zinc silver |
RoHS-compliant | Yes |
Corrosion protection period | 720 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 |
Last viewed
Cutter knife Martor Argentax Tap o Matic 330.02
Hexagonal nut, low profile ISO 4035 steel FK05, zinc flake silver (ZFSHL)
Low-cut safety shoes, S2
Work trousers
Countersunk tapping screw, shape C with hexalobular drive ISO 14586, steel, zinc-plated, blue passivated, shape C (with tip)
Hexagon nut with clamping piece (all-metal) ISO 7042, steel, strength class 8, zinc-nickel-plated, silver (ZNSHL)
Hex head screw with shank ISO 4014, steel 8.8, zinc-plated, blue passivated (A2K)
Countersunk tapping screw shape F with H recessed head DIN 7982, A2 stainless steel, plain, PH drive
Hexagonal bolt with shank
Combination filter ABEK1HgP3 RD For breathing protection series 175