| Material | Carbon Steel, Alloy Steel, Stainless Steel, Aluminum, Brass, etc. |
| Color | Black / Blue / Yellow Zinc Plated / Plain etc. |
| Standard | DIN, ASTM,JIS,BS,AS,ISO,GB,Nonstandard bolt(according to your order),etc. |
| Surface Finished | Black,Zinc plated,Copper plating,Phosphating,Mechanical galvanized,hot dipped galvanized,daromet etc |
| Mark | According to customer’s requirement |
| Delivery time | Within 30 days after receive your deposit. |
| Package | By carbon or gunny bag then on wooden pallet or according to client’s requirement |
| Professional: | We are specialized in fastener products 20 years of experience in this field |
| Size: | According to customer request |
| CustomerService: | 24-hours standby, Critical listening your every suggestion or demand and feedback ASAP. |
Product Introduction
Spring washers, also known as spring washers, play an important role in the mechanical and screw industries. It is usually used to increase the contact area between products, enhance fastening effect, and reduce friction damage between components. The main functions of the cushion include preventing loosening, shock absorption, preventing air leakage, serving as a buffer, and providing safety protection in specific environments. The material of the spring pad is diverse, including stainless steel and carbon steel (usually iron), and there are also various sizes to choose from, such as M3, M4, M5, M6, M8, M10, M12, M14, M16, etc. The national standard GB/T 94.1-2008 specifies the technical conditions for spring pads to ensure their quality and stability of performance.
The application scenarios of spring washers are wide, especially in situations where the pre tightening force of bolts is not high and the dynamic load is small. When the connected part is relatively soft, the sharp edge of the spring washer can be embedded to prevent loosening. In addition, when the clamping length of the bolt is short and the stress relaxation of the bolt is significant, if the elastic force of the washer is not significantly different from the pre tightening force of the bolt, the spring washer can compensate for this stress relaxation. However, in high-strength bolt connections, due to the smaller end face of the spring washer compared to the flat washer, under the same pre tightening force and external load conditions, it may cause surface deformation of the parts, thereby reducing the pre tightening force of the bolt and gradually causing loosening. Therefore, when choosing whether to use spring washers, it is necessary to consider the specific application scenario and bolt type comprehensively.
In addition to spring washers, there are other types of washers such as flat washers and anti loosening washers, each with different application scenarios and advantages. Flat washers are mainly used to prevent loosening of bolts and nuts, while anti loosening washers have stronger anti loosening capabilities. Understanding the characteristics and usage scenarios of these gaskets can help us choose the appropriate gasket type based on specific needs to ensure the reliability and safety of the connection
Main materials
Usually, 65MN spring steel or 70 # carbon steel, 3Cr13, stainless steel materials SUS304 or SUS316, as well as phosphor bronze materials can be used.
Main purpose
Used under the nut to prevent it from loosening.
It is stated in national standards.
The methods to prevent nuts (or bolts) from automatically loosening in mechanical design and production include:
1. Add spring washers; (Simple and easy to do)
2. Use hexagonal slotted nuts and split pins; (Year on year increase in processing steps)
3. Add a stop washer; (Year on year increase in processing steps)
4. Insert the steel wire into the hexagonal head hole of the hexagonal bolt. (Year on year increase in processing steps)
Spring washers are used for anti loosening, such as adding spring washers to the bolts connecting the motor and the machine base, because if the motor vibrates without spring washers, the nuts will loosen. Generally, fasteners on equipment with vibration are equipped with spring washers, while flanges generally do not require washers. The presence or absence of spring washers on flanges is related to the medium flowing through the pipeline. If it is prone to pulse generation, it is best to add spring washers. There are also high-speed fluid pipelines with frequent changes in diameter, so do not generalize. On some valves, spring washers are required to be added to the flange of the packing box cover, and the selection of spring washers is included in the Quick Easy Optimization automation selection.
Main differences
Spring washers can play a role in preventing loosening and increasing pre tightening force, while flat washers do not have this function. They can be used to increase the fastening contact area, prevent friction between bolts and workpieces, protect the surface of connecting parts from scratching the workpiece surface when bolts and nuts are tightened.
But some important connections, such as those that rely mainly on compression to generate friction and transmit power, cannot use spring pads. Using them will reduce the rigidity of the connection and may even lead to accidents. When the strength of the connected component is low, flat washers or flange bolts are used to increase the contact area. When there is vibration, pulse, or significant temperature fluctuations in the medium, spring washers must be used.
Standard GB, DIN, ISO, JIS Size M3-M50 or non-standard as request&design Material Carbon steel, stainless steel, alloys steel etc. Hex head bolt and nut Grade 4.8 / 6.8 / 8.8 / 10.9 / 12.9 , A2-70 / A4-80 Packing Box, carton or plastic bags, then put on pallets, or according to the demand of the customers
Material:Nylon/PVC/PU/carbon steel/stainless steel Place of Origin:Handan, China Tyle:Rigid, SWIVEL, Swivel & Rigid,Plate Casters Usage Wide Usage Packaging and delivery Packaging Details caster wheels,all goods simple pack in the carton with poly bag or as customer’s request Customized support OEM,ODM
Drywall screw, tapping screw Size:M2.9-M4.8 Length:12mm-55mm, 1-3/4”～3”. Material: carbon steel Finish: white zinc plated, blue zinc plated, black phosphating , etc.
Product Name High Strength Carbon Steel Chemical Anchor Bolt Chemical Agent Expansion Screw For Metal Building Finish ZINC, Yellow Material Stainless steel, Carbon Steel Place of Origin China Guangdong Brand Name LPL Model Number LPL-HXLS Standard GB Product name High Strength Carton Steel Chemical Anchor Bolt Material Carbon Steel Application Industry&Building Length Customzied Packaging Carton + Pallet Brand Name LPL Size Customzied Product standards GB Standard
Metal Stamping parts products Can be made into different size according to customer’s requirements. Material: carbon steel, stainless steel,aluminum,copper,etc. Finish: white zinc plated, blue zinc plated, etc.
Spring Washer Material: carbon steel, stainless steel,brass, etc. Size: M2-M100, 1/4-2-1/2 Standard: DIN127, ASTM, ISO Finish: white zinc plated, yellow zinc plated, blue zinc plated, Hot-dip galvanized, black oxide, plain, etc.
Name: Clevis Pin with Hole Pivot Pin Material: Stainless Steel Pin Diameter: M4-M16 Length: 8-50 OEM: Available
Flat Washer Material: carbon steel, stainless steel,brass, etc. Size: M2-M64, 1/4-2-1/2 Standard: DIN125,ASTM F436 ,ISO 7089,GB/T97 Finish: white zinc plated, yellow zinc plated, blue zinc plated, Hot-dip galvanized, plain,black oxide, etc.
Metal Stamping parts products Can be made into different size according to customer’s requirements. Material: carbon steel, stainless steel,aluminum,copper,etc. Finish: white zinc plated, blue zinc plated, etc.
Product Name M30 M33*3.5mm Pitch Metric A4-70 Stainless Steel Hex Castle Nut DIN935 Material Stainless steel:SS210,SS304,SS316,SS316L,SS410 Color Polish, Passication Standard DIN,ASME,ASNI,ISO Grade A2-70,A2-80,A4-70,A4-80 Finished Polish, Passication Thread Coarse,Fine Used Building Industry Machinery
Casters, also known as universal wheels, have a structure that allows for 360 degree horizontal rotation under dynamic or static loads. This type of wheel is usually used in conjunction with fixed casters, which do not have a rotating structure and cannot rotate horizontally but can only rotate vertically. There are various materials for casters, including PP casters, PVC casters, PU casters, cast iron casters, nylon casters, TPR casters, etc. According to their load-bearing capacity, they can also be divided into micro casters, light casters, medium casters, heavy casters, and ultra heavy casters.
Product Name: Lifting Eye Bolts DIN 580 – 2018 Standard: DIN 580 – 2018 Material: Carbon steel and stainless steel Size: Reference standards and according to customer requirements Finished: Zinc Plated,Hot Dip Galvanized Steel,Dacromet,Nickel Plated,Black Oxide,Plain Delivery time: 15-30days after prepayment
Flat Washer Material: carbon steel, stainless steel,brass, etc. Size: M2-M64, 1/4-2-1/2 Standard: DIN125,ASTM F436 ,ISO 7089,GB/T97 Finish: white zinc plated, yellow zinc plated, blue zinc plated, Hot-dip galvanized, plain,black oxide, etc.
Standard GB, DIN, ISO, JIS Size M3-M50 or non-standard as request&design Material Carbon steel, stainless steel, alloys steel etc. Grade 4.8 / 6.8 / 8.8 / 10.9 / 12.9 , A2-70 / A4-80 Packing Box, carton or plastic bags, then put on pallets, or according to the demand of the customers
size M2- M30 Material Carbon Steel, Stainless Steel, Titanium, Aluminum, Brass, etc Surface Treatment Plain, black, zinc plated/according to your requirement Standard DIN GB ISO JIS BA ANSI Grade SUS201, SUS304, SUS316, A2-70, A2-80, A4-80, 4.8 6.8 8.8 10.9 12.9 Quality Policy All the parts manufactured 100% inspection from OQC before shipping. Thread Coarse, fine Used Building industry machinery electronic,etc Non-standards OEM is available, according to drawing or samples
