General Hardware

Serrated Safety Washers is a kind of Belleville Disc Spring with trapezoid cross section and serrations on both sides. Serrated Safety Washers is connected with bolt or screw, it can prevent bolt relaxation after vibration by increasing the friction resistance. Serrated safety washers China are available in two different types: S type is suitable for normal duty, available for screw sizes: M1.6 to M36. VS type is thicker and therefore achieves higher pretensioning loads, be used with high strength bolts, available for screw sizes:M5 to M36. m10 washer dimensions supplier surface Condition And Corrosion Protection: Polish Phosphating and oil Mechanical Zinc Plating Chemical Nickel Plating Docromet / Geomet Coating Electrophoresis If you require an item with different dimensions, material or surface treatment, please contact us (Tech@DiscSpringsMFG.com), our technical engineers will work closely with you to specify or design, and then manufacture the proper serrated safety washer for your application.

Flange Washers also be known as "Flange Bolting Washers", "Spring Washers", be used for the connection between flange and bolt. Its application equipment includes: Reactor, stirrer and heat exchanger flange bolts; Pumps, Fans, Centrifuge Flanges and Anchor Bolts; Power bus and copper alloy bolts;Pipe flange and valve flange bolt. Flange Washers are widely used in industries such as Petrochemical, Power, Metallurgy, Paper, Pharmaceuticals, Food Processing, etc. Bolt flange joints are widely used in pressure vessel and pipe connections, and Leakage is the main failure mode of bolt flange connections. The main causes of leakage includes: differential thermal expansion/contraction, vibration, bolt creep and vibration. By installing flange washers in bolt flange joints, the elastic potential energy stored in the China Flange Bolting Washers can be converted into mechanical energy, to compensate the deformation of gasket and bolt, to ensure the bolt preload meets the sealing requirements, prevent leakage. How do we choose the right flange washers? Firstly, choose size of wholesale flange washers according to the bolt model & required load value. Then select the suitable raw material further according to the application environment. Material such as H13, 17-7PH, Inconel 718 (see the material document for details) are available in case of high temperature, cryogenic (low temperature) and anti-corrosion environment.

PRODUCT DESCRIPTION Standard:F436 Description: F436 washers are commonly used in automobile manufacturing due to their strength and durability. These washers are specifically designed to meet ASTM specifications for mechanical, chemical, and dimensional requirements. They are hardened or carburized for extra strength and are smaller in size compared to standard F844 washers. Zinc plating is a popular choice for F436 washers used in automobile manufacturing. Zinc plating provides corrosion resistance, which is crucial for automotive applications where exposure to moisture, chemicals, and other harsh conditions is common. The zinc plating helps protect the washers from rust and corrosion, ensuring their longevity and performance in automotive assemblies. F436 washers with zinc plating are often used in structural work in conjunction with A325 and A490 bolts. These washers provide the necessary hardness and strength required for automotive applications, ensuring reliable and long-lasting performance. Material 45#/40CR Size 1/4"-4" Finish Plain/black/ZINC/HDG/Dacromet/Mechanical Galvanized Hardness HV300/HRC35-45 Marking can be Customized Application Constrution/Wind turbines/railway line Packing Carton+ pallet; we can pack washers as your requirements Terms FOB+shanghai/ningbo Delivery time 30-70days size Inner diameter(min) Inner diameter(max) Outside diameter (min) Outside diameter (max) Thickness (max) nominal size Thickness (min) 1/4" , ; 7.137 7.925 15.087 15.875 2 1.65 1.2954 5/16" 8.737 9.525 16.662 17.45 2 1.65 1.2954 3/8" 10.312 11.1 19.837 20.65 2 1.65 1.2954 7/16" 11.912 12.7 22.63 23.41 2 1.65 1.2954 1/2" 13.487 14.3 26.187 27.787 4.95 3.47 2.4638 9/16" 15.087 15.9 29.311 30.91 4.95 3.47 2.4638 5/8" 17.45 18.26 32.537 34.137 4.95 3.8 3.0988 3/4" 20.65 21.43 37 38.1 4.95 3.8 3.0988 7/8" 23.8 24.587 43.662 45.237 4.95 3.97 3.4544 1" 28.575 29.36 50.012 51.587 4.95 3.97 3.4544 1-1/8" 31.75 32.537 56.362 57.937 4.95 3.97 3.4544 1-1/4" 34.925 35.712 62.712 64.287 4.95 3.97 3.4544 1-3/8" 38.10 39.7 68.25 70.63 4.95 3.97 3.4544 1-1/2" 41.275 42.062 75.412 76.987 4.95 3.97 3.4544 1-5/8" 44.45 46.01 80.99 84.11 7.1 6 4.53 1-3/4" 47.63 49.23 84.12 87.29 7.1 6 4.53 1-7/8" 50.80 52.36 87.34 90.46 7.1 6 4.53 2" 53.98 55.58 93.65 96.81 7.1 6 4.53 2-1/4" 60.33 61.93 100 103.16 8.62 7.3 6.1 2-1/2" 66.68 68.28 112.7 115.86 8.62 7.3 6.1 2-3/4" 73.03 74.63 125.4 128.56 8.62 7.3 6.1 3" 79.38 80.98 138.1 142.82 8.62 7.3 6.1 3-1/4" 85.73 88.9 149.23 155.52 8.62 7.3 6.1 3-1/2" 92.08 95.25 161.93 168.22 8.62 7.3 6.1 3-3/4" 98.43 101.6 174.63 180.92 8.62 7.3 6.1 4" 104.78 107.95 187.33 193.62 8.62 7.3 6.1 Products pictures for Flat washers F436 Washer/Flat Steel Washer, 1/4" - 4", Zinc Plated/Dacromet 0F436 Washer/Flat Steel Washer, 1/4" - 4", Zinc Plated/Dacromet 1F436 Washer/Flat Steel Washer, 1/4" - 4", Zinc Plated/Dacromet 2F436 Washer/Flat Steel Washer, 1/4" - 4", Zinc Plated/Dacromet 3

PRODUCT DESCRIPTION Nylon Nail-In Round Head White color 5X25MM PRODUCTS The Nylon Nail Anchor has a low-profile finish, is corrosion resistant, and is quick and easy to install. This one-step installation allows for the anchor to be placed through the object to afix, and then hammered into the pre-drilled hole. Three head styles are available: Flat, Round and Mushroom. Available in diameters 3/16" and 1/4". Note: This anchor is not recommended for overhead applications. One-Step installation Anchor size = Hole size Fast and easy to install Corrosion resistant Not recommended for overhead installation Specifications: Material = Nylon and Carbon Steel Nail Finish = Yellow Zinc Plated Size = 5mm Length = 25mm Colour = White White Nail Nylon Wall Anchor Round Head Low Profile Finish 5MM X 25MM 0

Belleville Washers DIN6796 also be known as "Conical Spring Washers", "Heavy Duty Bolting Washers", "Heavy Duty Safety Washers", "Spring Washers", "Belleville Springs", etc. Belleville Washers are widely used in industries such as national defense, metallurgy, engineering, electric power, machine tools, etc. Heavy Duty Safety Washers DIN6796 is a specialty version of Belleville Spring Washer used to improve security of bolt connection, manufactured as per DIN6796 standard. It is applicable to the static bolting applications in the medium and high strength range. Belleville Washers supplier helps to balance the stress relaxation in bolt / nut assembly, and has the following functions for loss of preload force, thermal expansion and contraction, and compression of seals caused by wear, deformation and creep of wearing parts: a. Have enough elasticity to improve the whole elasticity of the connecting pair. b. The inherent elastic force can compensate for the loss of preload force, meet the clamping force requirements, and ensure the reliability of the connection pair.

Disc Springs for Valves, also be known as Belleville Springs for Valves, Belleville Washers for Valves ... Disc springs are widely used in various types of valves such as Ball Valves, Regulating Valves, Globe Valves, Pigging Valves, and Sea Valves. The load of Disc Springs is large with small deflection, they can provide sufficient valve seat sealing force. The role of the Disc Spring inside the valve is to maintain sufficient contact pressure on the joint. Using Hegong Disc Springs Stacks either in series or parallel, obtain the required force and stroke, to meet the needs of each valve. Disc Springs Stacks apply a pressure and absorb the contraction and expansion that may occur due to pressure, temperature, or relaxation. Depending on the working environment, Belleville Springs for Valves can be produced by material such as Inconel750, Inconel718, 17-7PH. These materials have good corrosion resistance and high temperature resistance, can also provide adaptable working loads under harsh conditions and high temperature environments. Disc springs are the key part to fix Ball Valve, its performance will directly affect the sealing effect of the valve. When we design and manufacture Disc Springs for Ball Valves, we should pay attention to the following points.

Disc Springs for Ball Bearing, also be known as “Bearing Preload Disc Springs”, they are assembled with the radial ball bearings, act as a compensator of thermal expansions during their working. Using Disc Springs to preload radial ball bearings, helps to maintain positioning accuracy, eliminate shaft end play, and minimize vibration and shaft deflection by distributing the load evenly around the bearing race, extends the bearing life, eliminate excessive running noise. In most cases, the outer race of the ball bearing is preloaded with the Disc Spring, and in some cases it is desirable to preload the inner race of ball bearing.  The recommended load value is achieved when the disc spring is deflected to 75% of the initial cone heights (ho). The proper designed ho/t ratio makes a load of disc spring remains nearly constant for a large deflection range.  Disc springs for valves are designed to operate within 20%-80% of their total deflection. Misuse can result in overload, bigger error, or premature fatigue failure. If your working environment requires disc springs to work outside this range, HEGONG SPRING ® engineers can provide guidance or recommend other solutions. Be free to contact with our engineers Tech@DiscSpringsMFG.com.

Cryogenic Disc Springs made of Cryogenic(high temperature) resistant material as Inconel 718 , 750 , Nimonic 90 , these disc springs are applied for high temperature&cryogenic(from -50°C up to +500°C) environment and ultra-high temperature&cryogenic(from -250°C up to +700°C) environment. Cryogenic Disc Springs(High Temperature Disc Springs) are widely used in Valves, Heat Exchangers, Boilers, Industrial Furnaces & Ovens, Cryogenic Technology, Special Chemical circumstances, etc. HEGONG Cryogenic Disc Springs are designed & manufactured according to DIN2092 & DIN2093, GB/T 1972-2005, and ISO 19690. The engineers of HEGONG SPRING ® are pleased to design the springs for the specific applications together with the customer’s R&D department. Be free to contact with our engineers Material: The common material for wholesale Cryogenic Disc Springs include: 30W4CrVA, H13, X22CrMoV12-1, CuBe2, Inconel 718, Inconel 750, Nimonic 90.

High Temperature Disc Springs High Temperature Disc Springs made of high temperature(Cryogenic) resistant material as Inconel 718 , 750 , Nimonic 90 , these disc springs are applied for high temperature&cryogenic(from -50°C up to +500°C) environment and ultra- high temperature&cryogenic(from -250°C up to +700°C) environment. High Temperature Disc Springs (Cryogenic Disc Springs) are widely used in Valves, Heat Exchangers, Boilers, Industrial Furnaces & Ovens, Cryogenic Technology, Special Chemical circumstances, etc. Hegong High Temperature Disc Springs are designed & manufactured according to DIN2092 & DIN2093, GB/T 1972-2005, and ISO 19690. The engineers of HEGONG SPRING ® are pleased to design the springs for the specific applications together with the customer’s R&D department. Be free to contact with our engineers.

Corrosion Resistant Disc Springs, made of stainless steel, such as SUS301, SUS302, SUS316, 17-4PH, 17-7PH, 15-7Mo, their resistant to corrosion is higher than general Disc Springs made of spring steel, so they also be known as "Stainless Steel Disc Springs". Stainless Steel Disc Springs are also widely used in National Defense, Metallurgy, Petrochemical, Wind Power, Engineering, Food Processing Equipment, etc.  In addition to Stainless Steel Disc Springs , High Temperature Disc Springs, Cryogenic Disc Springs are suitable for high temperature or Cryogenic applications, you can choose according to the application requirement. Corrosion Resistant Disc springs manufacturer are designed & manufactured according to DIN2092 & DIN2093, GB/T 1972-2005, and ISO 19690. The engineers of HEGONG SPRING ® are pleased to design the springs for the specific applications together with the customer’s R&D department. Be free to contact with our engineers.

Disc spring can be used in a single piece, as well in multi pieces with different combinations. disc springs stack set is usual to use disc spring stacks with various combinations to meet your specified applications. Description The required various load/deflection characteristics of Belleville disc springs China can be obtained from the various stacking combinations. The stack combination methods and load&deflection relation as the table below. The designed & expected load/deflection characteristics of disc springs stack just be reached under the correct installation. A guiding element is necessary to keep the Hegong disc springs stack in position. This should preferably be a mandrel. HEGONG SPRING® can deliver disc springs stack pre- assembled on a guiding element and highly recommend this way. Advantages of wholesale disc springs stack: 1. Provide specific load/deflection data for the whole set of disc springs stack. (HEGONG SPRING®’s load testing machines can measure loads up to 4000KN) 2. Small load tolerance 3. Easier to install

Belleville Disc Springs also was called "Disc Springs" "Conical Disc Springs", include disc spring stacks, Corrosion Resistant Disc Springs, High Temperature / Cryogenic Disc Springs, Disc Springs for Ball Bearing, Disc Springs for Valves. Disc Springs are widely used in petrochemical, electric power, metallurgy, engineering, machine tools, national defense, and other industries. Bearing Preload Disc Springs manufacturer Description The Disc Spring concept was first invented by a Frenchman Louis Belleville in 1865. So, disc spring is commonly known as Belleville Springs. And sometimes it also was called "Conical disc springs" "Belleville Disc Springs" or "Belleville Washers". Hegong Disc Springs are conically washers and have a rectangular cross- section, which is loaded in the axial direction. It has a small volume and large energy storage compared to traditional helical springs and can be used as a single disc spring or in the stack (stack in parallel, in series or parallel & series combination). The standards for disc springs mainly include DIN2092 (Calculation) / DIN2093 ( Quality Specifications-Dimensions ) of Germany, JIS B 2706- Japan, GB/T 1972-2005 of China and ISO 19690 : 2017 ( HEGONG SPRING ® is the drafting team member for international standard ISO 19690 : 2017 and Chinese national standard GB/T 1972-2005 ). Among them, DIN2093 is most widely used in the world. belleville washer design are designed & manufactured according to DIN2092 & DIN2093, working for dynamic or static applications. The engineers of HEGONG SPRING® are pleased to design the springs for the specific applications together with the customer’s R&D department. Be free to contact with our engineers. Tech@DiscSpringsMFG.com. Genera , lly, disc springs include disc spring stacks, Corrosion Resistant Disc Springs, High Temperature / Cryogenic Disc Springs, Disc Springs for Ball Bearing, Disc Springs for Valves. Surface Condition And Corrosion Protection: Polish Phosphating and oil Mechanical Zinc Plating Chemical Nickel Plating Docromet / Geomet Coating Electrophoresis Tolerance: The Tolerance is according to DIN2093 standards Belleville Spring Washers exporter Specification: The following specification table covers the "standard" sizes and some non- standard sizes. HEGONG SPRING ® customizes Belleville Disc Springs as well. The max OD is up to 1000mm. If you require the custom Belleville Disc Springs, please contact our sales engineers.

Carbon Steel And Stainless Steel Common Round Nails For Carpentry, Wood Fastening Nails Galvanized iron flat head common wire nails models: 10#, 13#, 16#, 20#, 25#, 30#, 35#, 40#, 45#, 50#, 60#, 70#, 80#, 90#, 100#, 110#, 120#, 130#, 150#,175#,200# Standards nail length:10mm-200mm, 1/2"-10", BWG4-20 for all kinds of round Nails. Shank Diameter(mm):0.90--6.50 Uses: Mainly for structure construction, building construction, packing and furniture making and carpentry. Material: Q195 or 235 Description: Countersunk,Checkered head,Diamond Point, Polished, galvanized. Packing methods: A).small plastic bag and small box of 1kg,2.5kg,3kg,5kg B).In cartonor bag of 25kgs/20kgs/50lbs Common Nails bright polished, (Gauge ’1’ , diameter 1.90-2.00mm, length 25.4mm,) (Gauge ‘2’ , diameter 2.70-2.80 mm, length 50.8mm,) (Gauge ‘3’, diameter 3.90- 4.00mm, length 76.2mm). 5kg each packet, 20kg per carton Common wire nails sizes: 2/ 3/ 4/ 5/ 6/ 7/ 8/ 10/ 12 (all in 'cm') packing: 1kg/ bag, 25 bags (25kgs)/ carton quantity: 20' containers HOT DIPPED GALVANIZED COMMON NAIL, HIGHLY ROUGH (COARSE) FINISH; DIAMOND POINT. 50 LBS. BOX. 1 x BWG-16 350 boxes of 1-1/2 x BWG-15 2 x BWG-13. Common Nail Sizes : 2,80 * 60 mm 3,80 * 100 mm Package : 25 kg package in a cartoon box with pallet Common construction ZN Nails (GOST 4028-63 or analogue) Size, mm 1.2 x 16 1.2 x 20 1.2 x 25 1.6 x 25 1.6 x 32 1.8x 32 1.8x 40 1.8x 50 2.0 x 50 2.0 x 60 2.5 x 50

Coil Roofing Nails(Flat Or Conical Collated Nails Coil) Coil roofing nails can be smooth nails, ring nails, screw nails according to shank types. Also written as collated nails. Usually welded twice into coils at 15 or 16 angle degree for easy and continuous operation in roofing works. Collated wire nails are the preferred fasteners for most crating and pallet siding and fencing applications. Using coil nails allow the operator to hold more nails in the nailing gun and reduce reloading time. The nails come in all forms of vinyl coated and galvanized finish, as well as deformed shanks with varying holding power such as smooth, screw and ring. The pints can be diamond point (DP), common round point (CP) and FP (flat point). Collated steel nails can be divided into conical coils and flat coils. We manufacture and export all kinds of Coil Roofing Nails, the surface treatments can be bright, electro galvanized, or V. C. coating.Details are as follows: Galvanized Pallet Roofing Coil Nail Screw Coil Nails: Length:10mm-200mm; Shank Diameter(mm):0.90-6.50. 304 Grade SS Coil Roofing Nails, Diameter: 0.120'', Length: 3/4'' to 1-3/4'', Head: 3/8'' Shank: Smooth or Ring Shank. Galvanized Roofing Nails in Bulk, Zink coated Dimensions 3.0x30 3.0x25 5kg or 25kg boxes Supplied in 15 Degree Collated Coil Nails Styles: 15 degree coating coil nails hot dipped galvanized coil nails Technical Information: Shank types: Smooth shank and twisted shank Application: Umbrella head ring shank HDG nails are widely suitable for the houses in tropical areas and the installation of roofing sheets. Coil nails: 2.5x40 / 2.5x45 / 2.1x45 / 2.5x50 / 2.1x55 / 2.5x55 / 2.5x60 / 2.8x60 / 2.5x65 / 2.5x70 / 2.8x80 / 2.8x85 / 2.8x90 / 3.1x100 / smooth ,screw and ring. Coil roofing nail and coil common nails are supplied in zinc coating and color paint. Product Serial No.: Model: 1",1-1/4",1-1/2",1-3/4" Tec , hnical Standards: Shank Diameter(in):0.120 inch; or in metric system 3mm-4mm Length(in):1,1-1/4,1-1/2,1-3/4 PCS/C , oil:120 Package description: Coil/CTN:60 Material:Q195/Q235