| Image | Part Number | Description / PDF | Quantity | Rfq |
|---|---|---|---|---|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .389 ID, .754 OD, . |
1975 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .260 ID, .687 OD, . |
6000 |
|
 |
Keystone Electronics Corp. |
WASHER FLAT #4 NYLON |
439212300 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .690 ID, .880 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .065 ID, .127 OD, . |
1410 |
|
 |
TE Connectivity AMP Connectors |
WASHER, SPRING LOCK, DIN 127B |
72 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .120 ID, .187 OD, . |
2070 |
|
 |
Richco, Inc. (Essentra Components) |
SEALING AND RETAINING WASHER, 1. |
1998 |
|
 |
Keystone Electronics Corp. |
WASHER FLAT RETAINING 1/4 NYLON |
5600 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .630 ID, 1.13 OD, 1 |
4000 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .125 ID, .625 OD, . |
4860 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .318 ID, .406 OD, . |
0 |
|
 |
Richco, Inc. (Essentra Components) |
WASHER FLAT 3/8 NYLON |
1500 |
|
 |
RAF |
.312OD X .012 THICK X .146ID |
971 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .665 ID, 1.000 OD, |
1975 |
|
 |
Richco, Inc. (Essentra Components) |
WASHER FLAT M36 NYLON |
0 |
|
 |
B&F Fastener Supply |
WASHER SPLIT LOCK 1/4 STN STEEL |
200 |
|
 |
Switchcraft / Conxall |
WASHER FLAT 3/8 COPPER ALLOY |
675 |
|
 |
Richco, Inc. (Essentra Components) |
FLAT WASHER, .621 ID, .845 OD, . |
1890 |
|
 |
Keystone Electronics Corp. |
WASHER FLAT #8 NYLON |
609917200 |
|
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: