| Image | Part Number | Description / PDF | Quantity | Rfq |
|---|---|---|---|---|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .283 ID, .638 OD, . |
1790 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .136 ID, .490 OD, . |
3000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .250 ID, 1.250 OD, |
3500 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .115 ID, .290 OD, . |
6955 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .140 ID, .312 OD, . |
4633 |
|
 |
APM Hexseal |
WASHER SEALING 1/4 STN STEEL |
2569 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, NATURAL, .25 |
50000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .328 ID, .390 OD, . |
1975 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .625 ID, 1.718 OD, |
2964 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .316 ID, 1.121 OD, |
3000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .102 ID, .157 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .216 ID, .312 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, BLACK, .189 |
5000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, BLACK, .505 |
2888 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .225 ID, .450 OD, . |
2000 |
|
 |
Richco, Inc. (Essentra Components) |
WASHER FLAT M2.5 NYLON NATURAL |
6966 |
|
 |
Richco, Inc. (Essentra Components) |
WASHER FLAT RETAINING M6 NYLON |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .291 ID, .421 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .390 ID, 1.120 OD, |
25000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .138 ID, .505 OD, . |
10940 |
|
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: