| Image | Part Number | Description / PDF | Quantity | Rfq |
|---|---|---|---|---|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .422 ID, .625 OD, . |
1500 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .380 ID, .875 OD, . |
3000 |
|
 |
Richco, Inc. (Essentra Components) |
SEALING AND RETAINING WASHER, .7 |
948 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .437 ID, .629 OD, . |
1479 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .385 ID, .750 OD, . |
4999 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, BLACK, .120 |
4780 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, 13.40MM ID, M12 / 1 |
0 |
|
 |
Richco, Inc. (Essentra Components) |
WASHER FLAT M3.5 NYLON NATURAL |
4933 |
|
 |
Richco, Inc. (Essentra Components) |
WASHER FLAT M6 PLASTIC |
6764 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .147 ID, .495 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .150 ID, .312 OD, . |
4969 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .209 ID, .435 OD, . |
3000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, 6.4MM ID, M6 / 1/4 |
3000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .330 ID, .750 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .120 ID, .532 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .526 ID, .718 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, NATURAL, .31 |
46765 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .632 ID, 1.000 OD, |
2900 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .148 ID, .236 OD, . |
1875 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, BLACK, .104 |
9624 |
|
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: