| Image | Part Number | Description / PDF | Quantity | Rfq |
|---|---|---|---|---|
 |
Richco, Inc. (Essentra Components) |
WASHER FLAT M5 PLASTIC |
8962 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .252 ID, .472 OD, . |
25000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .350 ID, .620 OD, . |
2965 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, 1.930 ID, 2.690 OD, |
999 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .642 ID, 1.024 OD, |
1998 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .695 ID, .812 OD, . |
2000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .140 ID, .375 OD, . |
3180 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .343 ID, .687 OD, . |
5000 |
|
 |
Richco, Inc. (Essentra Components) |
LOCKING SEALING WASHER, 3.10MM I |
7759 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, BLACK, .390 |
2975 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .067 ID, .197 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .421 ID, .687 OD, . |
1990 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, NATURAL, .25 |
48809 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .730 ID, .840 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .312 ID, .500 OD, . |
4900 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .844 ID, 1.031 OD, |
2000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, BLACK, .194 |
4900 |
|
 |
Richco, Inc. (Essentra Components) |
RETAINING WASHER, NATURAL, NYLON |
42435 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, 5.30MM ID, M5 / #10 |
24101 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .142 ID, .250 OD, . |
2000 |
|
Washers are thin plate-like mechanical components with a central hole, typically used to distribute the load of threaded fasteners, prevent loosening, or create seals. As critical elements in assembly systems, they enhance structural integrity, reduce wear, and improve vibration resistance. Modern engineering applications rely on washers to optimize performance across diverse environments.
| Type | Functional Characteristics | Application Examples |
|---|---|---|
| Flat Washers | Distribute load, prevent surface damage | Machinery bases, construction equipment |
| Spring Washers | Provide axial tension, absorb vibrations | Automotive engines, railway tracks |
| Lock Washers | Prevent nut/bolt rotation under vibration | Aerospace fasteners, industrial pumps |
| Sealing Washers | Create fluid/gas-tight barriers | Pipe flanges, hydraulic systems |
Typical washers feature a flat annular design with precise inner/outer diameter ratios. Advanced variants incorporate:
| Parameter | Importance |
|---|---|
| Material Hardness (HV/HRC) | Determines wear resistance and load capacity |
| Inner Diameter Tolerance ( m) | Affects fit precision with fasteners |
| Corrosion Resistance (hrs in salt spray) | Dictates service life in harsh environments |
| Spring Rate (N/mm) | Measures elasticity for vibration damping |
| Operating Temperature Range ( C) | Defines thermal stability limits |
| Manufacturer | Representative Product | Key Feature |
|---|---|---|
| Nord-Lock Group | X-series washers | wedge-locking system for vibration resistance |
| ITW Shakeproof | Prevailing torque washers | Deformable split ring design |
| MISUMI | FCMZ series spring washers | Optimized for robotic assembly |
Key considerations include:
Example: Selecting stainless steel Belleville washers for offshore wind turbine bolts ensures corrosion resistance and maintains clamping force under dynamic loads.
Emerging trends include: