| Image | Part Number | Description / PDF | Quantity | Rfq |
|---|---|---|---|---|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .170 ID, .375 OD, . |
6000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .750 ID, 1.500 OD, |
1000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .394 ID, .785 OD, . |
4975 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .115 ID, .199 OD, . |
4830 |
|
 |
Richco, Inc. (Essentra Components) |
WASHER FLAT RETAIN M2.5 PLASTIC |
11387 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, BLACK, .380 |
10000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .093 ID, .187 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
LOCKING SEALING WASHER, 8.20MM I |
1835 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .390 ID, 1.267 OD, |
4896 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .082 ID, .695 OD, . |
2000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, NATURAL, .12 |
48730 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .209 ID, .709 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
WASHER FLAT 5/16 NYLON NATURAL |
10015 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .755 ID, .962 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, NATURAL, .14 |
48889 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .125 ID, .250 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, 3.20MM ID, M3 / #4 |
3161 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .416 ID, .995 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .755 ID, 1.000 OD, |
2000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .220 ID, .374 OD, . |
4645 |
|
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: