| Image | Part Number | Description / PDF | Quantity | Rfq |
|---|---|---|---|---|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .265 ID, .562 OD, . |
1925 |
|
 |
Richco, Inc. (Essentra Components) |
SEALING AND RETAINING WASHER, .5 |
1898 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, 3.70MM ID, M3.5 / # |
3000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, 1.270 ID, 3.005 OD, |
1000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .337 ID, .683 OD, . |
5000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .640 ID, .781 OD, . |
4984 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .340 ID, .865 OD, . |
2000 |
|
 |
B&F Fastener Supply |
WASHER SPLIT LOCK 3/8 STEEL |
102 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .397 ID, .860 OD, . |
900 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .112 ID, .206 OD, . |
7135 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .255 ID, .555 OD, . |
4800 |
|
 |
Richco, Inc. (Essentra Components) |
RETAINING WASHER, NATURAL, NYLON |
20028 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .340 ID, .615 OD, . |
2000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .670 ID, 1.240 OD, |
990 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .558 ID, .755 OD, . |
4982 |
|
 |
APM Hexseal |
WASHER SEALING M4 STN STEEL |
90 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .256 ID, .400 OD, . |
2930 |
|
 |
Richco, Inc. (Essentra Components) |
WASHER FLAT M16 NYLON |
1377 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .134 ID, .216 OD, . |
6160 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .125 ID, .199 OD, . |
5304 |
|
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: