| Image | Part Number | Description / PDF | Quantity | Rfq |
|---|---|---|---|---|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .512 ID, 1.57 OD, . |
1000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, NATURAL, .31 |
74019 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .299 ID, .575 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .150 ID, .312 OD, . |
4558 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .390 ID, .875 OD, . |
4000 |
|
 |
Richco, Inc. (Essentra Components) |
LOCKING SEALING WASHER, 8.10MM I |
2000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .280 ID, .630 OD, . |
2950 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .320 ID, .562 OD, . |
3924 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .167 ID, .472 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .091 ID, .156 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
WASHER FLAT M2 NYLON BLACK |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .244 ID, .689 OD, . |
1990 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, 1.010 ID, 1.468 OD, |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .696 ID, 1.500 OD, |
500 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .260 ID, .560 OD, . |
1600 |
|
 |
Richco, Inc. (Essentra Components) |
LOCKING SEALING WASHER, 6.30MM I |
396 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, BLACK, .090 |
4820 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .755 ID, 1.500 OD, |
4790 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .131 ID, .185 OD, . |
4950 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .317 ID, .750 OD, . |
1978 |
|
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: