| Image | Part Number | Description / PDF | Quantity | Rfq |
|---|---|---|---|---|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, 10.5MM ID, M10 / 3/ |
1000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .145 ID, .187 OD, . |
2000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, BLACK, .443 |
3900 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .187 ID, .750 OD, . |
2000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .110 ID, .312 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .515 ID, 1.468 OD, |
8000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .281 ID, .625 OD, . |
4932 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .255 ID, .375 OD, . |
3000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .091 ID, .187 OD, . |
6150 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .570 ID, .745 OD, . |
1997 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .481 ID, .671 OD, . |
4974 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, NATURAL, .28 |
48004 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .405 ID, 1.361 OD, |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .218 ID, .625 OD, . |
800 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, 1.015 ID, 1.500 OD, |
4975 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .380 ID, 1.250 OD, |
4900 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, BLACK, .171 |
49597 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .515 ID, .775 OD, . |
5000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, 13MM ID, M12 / 1/2 |
497 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .437 ID, 1.250 OD, |
1000 |
|
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: