| Image | Part Number | Description / PDF | Quantity | Rfq |
|---|---|---|---|---|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, 2.15MM ID, M2 SCREW |
397 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .276 ID, .433 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, NATURAL, .38 |
19998 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .187 ID, .380 OD, . |
2000 |
|
 |
Richco, Inc. (Essentra Components) |
WASHER FLAT M4 NYLON |
1331 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .505 ID, .625 OD, . |
5000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, 1.125 ID, 2.935 OD, |
997 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .098 ID, .186 OD, . |
9282 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .320 ID, 1.125 OD, |
4974 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .370 ID, .518 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .171 ID, .248 OD, . |
2936 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .165 ID, .315 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .318 ID, .688 OD, . |
2000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, 17MM ID, M16 / 5/8 |
1000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .375 ID, .825 OD, . |
2000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .665 ID, .950 OD, . |
2000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .100 ID, .316 OD, . |
1880 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .630 ID, 2.000 OD, |
1239 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, NATURAL, .09 |
8611 |
|
 |
Richco, Inc. (Essentra Components) |
RETAINING WASHER, NATURAL, NYLON |
5000 |
|
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: