| Image | Part Number | Description / PDF | Quantity | Rfq |
|---|---|---|---|---|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .260 ID, .560 OD, . |
1600 |
|
 |
Keystone Electronics Corp. |
WASHER FLAT #4 FIBRE |
1979323700 |
|
 |
Richco, Inc. (Essentra Components) |
LOCKING SEALING WASHER, 6.30MM I |
396 |
|
 |
Keystone Electronics Corp. |
WASHER FLAT #4 FIBRE |
2147483647 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, BLACK, .090 |
4820 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .755 ID, 1.500 OD, |
4790 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .131 ID, .185 OD, . |
4950 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .317 ID, .750 OD, . |
1978 |
|
 |
Switchcraft / Conxall |
WASHER FLAT PLASTIC |
481 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .122 ID, .228 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .760 ID, 1.000 OD, |
2000 |
|
 |
APM Hexseal |
WASHER SEALING M5 STN STEEL |
3597 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .125 ID, .225 OD, . |
944 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .281 ID, 1.250 OD, |
5000 |
|
 |
Richco, Inc. (Essentra Components) |
WASHER FLAT RETAINING M3 PLASTIC |
4 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, BLACK, .125 |
3000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .296 ID, .436 OD, . |
2970 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .126 ID, .236 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .157 ID, .505 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
SPRING WASHER, FOR 3/8 SCREW, .4 |
1000 |
|
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: