| Image | Part Number | Description / PDF | Quantity | Rfq |
|---|---|---|---|---|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .244 ID, .433 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .095 ID, .312 OD, . |
4965 |
|
 |
Richco, Inc. (Essentra Components) |
WASHER FLAT M27 NYLON |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .317 ID, .890 OD, . |
2000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .632 ID, 2.930 OD, |
1000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .312 ID, 1.000 OD, |
2000 |
|
 |
Richco, Inc. (Essentra Components) |
WASHER FLAT M12 PLASTIC |
4089 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .443 ID, 1.250 OD, |
0 |
|
 |
Richco, Inc. (Essentra Components) |
WASHER FLAT M2 NYLON BLACK |
4755 |
|
 |
Richco, Inc. (Essentra Components) |
WASHER FLAT M3 PLASTIC |
4020 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .875 ID, 1.250 OD, |
2964 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .253 ID, .443 OD, . |
4585 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .380 ID, .750 OD, . |
999 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, NYLON, NATURAL, .26 |
2890 |
|
 |
Richco, Inc. (Essentra Components) |
LOCKING SEALING WASHER, 13.20MM |
1498 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .363 ID, .555 OD, . |
4975 |
|
 |
B&F Fastener Supply |
WASHER SPLIT LOCK M6 STEEL |
500 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .192 ID, .406 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, 2.15MM ID, M2 SCREW |
397 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .276 ID, .433 OD, . |
0 |
|
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: