| Image | Part Number | Description / PDF | Quantity | Rfq |
|---|---|---|---|---|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .509 ID, 1.000 OD, |
2000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, 1.080 ID, 2.000 OD, |
999 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, 5.3MM ID, M5/#10 SC |
3000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .272 ID, .416 OD, . |
2500 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .291 ID, .406 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .055 ID, .120 OD, . |
3000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .169 ID, .296 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
WASHER FLAT M6 NYLON BLACK |
990 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .250 ID, .435 OD, . |
4950 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .406 ID, .625 OD, . |
4990 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .102 ID, .236 OD, . |
2990 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .125 ID, .312 OD, . |
8388 |
|
 |
Richco, Inc. (Essentra Components) |
WASHER FLAT RETAINING M3 NYLON |
4237 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .266 ID, .731 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, 2.65MM ID, M2.5 SCR |
16592 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .085 ID, .196 OD, . |
4440 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .375 ID, .500 OD, . |
8265 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, 1.026 ID, 1.312 OD, |
1000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, NATURAL, .25 |
48003 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .160 ID, .310 OD, . |
0 |
|
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: