General Hardware

Product Description Customized Solid Copper Hollow Rivets Hot / Cold Heading Crafts 0 Customized Solid Copper Hollow Rivets Hot / Cold Heading Crafts 1 Customised Approach 1 Tell us the product information you need. For example: material, standard number, strength grade, surface treatment, size, etc. 2 Tell us what you need your product to look like with a combination drawing. As well as other product requirements. 3 Tell us what you need your product to look like with a combination drawing. As well as other product requirements. Customized Solid Copper Hollow Rivets Hot / Cold Heading Crafts 2 Customized Solid Copper Hollow Rivets Hot / Cold Heading Crafts 3Customized Solid Copper Hollow Rivets Hot / Cold Heading Crafts 4 Dimensional Deviation Our manufacturing process ensures precision in dimensions, minimizing any variations in diameter, length, or head shape that may deviate from specifications. Surface Imperfections Rigorous quality control addresses surface defects such as scratches, dents, or oxidation, preserving both appearance and surface quality. Thread Issues For rivets with threads, our quality assurance measures prevent difficulties during installation or potential thread damage during use by ensuring thread quality. Insufficient Strength We use materials with optimal strength, eliminating concerns about rivet breakage or deformation during use, ensuring reliable fastening. Head Shape Irregularities Precision design and manufacturing processes ensure that the rivet head conforms to specified shapes, ensuring secure installation and high-quality riveting. Material Deficiencies Our materials undergo thorough quality checks to address issues such as impurities or inclusions, maintaining overall performance and corrosion resistance. Coating Challenges If coated rivets are required, our advanced coating processes guarantee strong adhesion and uniformity, preventing corrosion and maintaining corrosion resistance. Installation Challenges We provide clear instructions for correct installation methods and tools, minimizing the risk of rivet damage or failure during use. Identification Challenges Each rivet is clearly marked with accurate information, preventing confusion and ensuring the correct use of rivets. Production Process Challenges Our stringent quality control measures address various aspects of the production process, preventing issues related to dimensions, materials, and surface treatment. Hollow Rivet Edge Issues Our quality assurance process for semi- hollow rivets ensures that riveting edges are free from cracks or uneven edges caused by quality issues." Customized Solid Copper Hollow Rivets Hot / Cold Heading Crafts 5 Customized Solid Copper Hollow Rivets Hot / Cold Heading Crafts 6 Team With professional technical knowledge and over 20 years of customisation experience, the engineering team is able to quickly and accurately understand the specific needs of our customers and provide professional advice on rivet customisation. Pre-sales Services By communicating with our customers, we provide a comprehensive custom design service for rivets around size, shape, material and performance. Production The perfect production process and advanced production equipment ensure the high quality and precision of the products while meeting the demand of customers for different quantities of customised rivets. Quality Control Establish a perfect quality control system to ensure that the quality of custom rivets meets the standards and customer expectations through advanced testing methods, such as dimensional testing, material composition analysis, mechanical properties testing, etc. After-sales Service Provide comprehensive after-sales support services to solve problems that customers may encounter during use, ensuring customer satisfaction and the long-term performance of customised rivets.

Product Description 304 Stainless Steel Flat Head Screw C Large Flat Head Thin Head Flat Head Cross Head Screw M2M2.5M3M4 Strength class A2-70 Surface treatment Natural quality Abrasion resistance Head shape Pan head screw material Stainless steel A2-70 Standard GB819 M2 M2.5 M3 M4 Stainless Steel Screws Thin Head Cross Head Thin Flat Head Screws 0M2 M2.5 M3 M4 Stainless Steel Screws Thin Head Cross Head Thin Flat Head Screws 1 Feitai Precision is committed to high-quality, to revitalize the national screw business as its own responsibility, relying on a strict quality management system, relying on the company's many years of fastener support and service experience in the industrial field, in the industrial fastener professional technology has accumulated unique expertise, While meeting the smooth supply of conventional products and adapting to customers' special technical requirements and product needs, we provide you with professional fastening solutions to ensure the successful operation and sustainable operation of your project. Feitai Precision has a well-trained team, ready to assist you in product design, selection, and production, for further competitiveness at the same time segment the market and organize a special part to provide you with products that meet your requirements, and satisfactory service. M2 M2.5 M3 M4 Stainless Steel Screws Thin Head Cross Head Thin Flat Head Screws 2

Product Description A2 DIN7504 N Cross Recessed Phillips Pan Head Self Drilling Screws With Tapping Screw Thread Description Self-drilling screw DIN 7504N pan head and PH recess drills thickness plates depending on the screw diameter, from 2 mm (Ø3,5) up to 6 mm (Ø6,3). Materials in steel and stainless steel A2 and coating blue zinc plated, black zinc plated and white lacquered. DIN7504N Pan head Self Drilling Screw is also widely known as European standard DIN 7504N. The precise point cut is resulted to non-walking point that works for fast metal engagement. Pan head Self Drilling Screw is applied for fastening unsupported metal sheets. Landwide offers many surface finishings such as zinc plating, yellow zinc, black zinc, bronze, phosphated and ruspert coating, etc. Self dilling screw Pan head is one of the most commonly used screw. Landwide makes and supplies self drilling pan head screw range from #6 to 1/4" and length from 9.5mm to 150mm) in material carbon steel and stainless steel. Self Drilling screw Pan head works into both metal and wood. There is no need to pre-drill a hole, with the ability to connect components in one step, self-drilling screw pan head is very efficient in a variety of hard- substrate applications. The drilling capacity ranges from 1.5mm to 12.0mm. Landwide Screw DNA Standard screw DIN7504N with precisely point cut. Result to non-walking point which provides fast metal engagement. Available with white zinc, zinc, yellow zinc, mechanical zinc, Ruspert 500 / 1000 hours...etc. Application DIN7504N. For fastening unsupported metal sheets. Specifications #6, #7, #8, #10, #12, #14 (1/4"). Nominal Size M3.5, M3.9, M4.2, M4.8, M5.5, M6.3. Screw Length 9.5mm ~ 100mm Specification Item name Self-drilling tapping screws Cylindrical head DIN 7504 N - Diameter 4.2 x 19 mm Made of galvanised steel - with pH cross shape Size M2.9~M6.3 or Customized Material Stainless steel, Carbon steel,etc Head Tpye Flat head, Pan head, Wafer head, Button head, Cap head or Customized Drive Style Philips,Torx, hex, Cross, Slotted,etc. Hardness Rockwell B70;HV350~450°;HV400~550°;HV450~700°;8.8Grade HRC22~32°; 10.9 Grade HRC32~39 12.9Grade HRC39~44 Surface Finish Zinc Plated, Nickel Plated, Bronze, Copper,Phosphate, Oxidation black, Passivation, Tin, Dacromet, Gold, Chrome, Silver, Parkerising,Zinc-nickel alloy plated etc. Sample Available The sample is free of charge if we have the existing tooling, the freight charge will be on the buyer MOQ 10000pcs Sample time Samples time 3-5days, Lead time 10-15days Pricing Term EXW FOB, CIF Packing Bulk or Small boxes, pack in carton with pallet for big quantity Port Shanghai port Payment term TT (30% in advance as deposit, balance before delivery) bank transfer Service Customized size offered , OEM service Standard ISO,GB,DIN,ANSI d1 2.9 3.5 4.2 4.8 5.5 d2 max 5.6 6.9 8.2 9.5 10.8 k max 2.4 2.6 3.05 3.55 4 L1 4.5 5 7 8 10 Drill speed, rpm - - - - - Steel 1800-2500 1800-2500 1800-2500 1800-2500 1000-1800 Stainless steel 1000-1500 1000-1500 1000-1500 1000-1500 600-1000 Max. torque, Nm 1.5 2.8 4.7 6.9 10.4 Bit No. T10 T15/T10* T20 T25 T25 Our Product Catalogue Screw Self Drilling Screws Hex Self Tapping Screws Hexagon Socket Set Screws Hexagon Head Wood Screws Hex Socket Flat Countersunk Head Hexagon Socket Button Head Screw Cross Recessed Pan Head Self Tapping Screw Bolt Hexagon Head Bolt Lifting Eye Bolt Wing Bolt Carriage Bolt Swing Bolt Stud bolt T Shaped Bolt U Shaped Bolt Threaded Pipe Nipple Washer Flat Washer Spring Washer Lock Washer Tab Washer Retaining Washer Nut Hexagon Nuts Square Nut Eye Nut Wing Nut Lock Nut Self Clinching Nuts Anchors Hook Anchor Bolts Hammer Anchor Sleeve Anchor Expandable Bolt Anchor Rivet Nut Hex Rivet Nuts Csk Rivet Nut Blind Rivet Nut Flat Head Rivet Nut Slotted Rivet Nut Knurled Rivet Nut Floating Rivet Nut Self Clinching Standoff Rivet Blind Rivet Other Hardware Fasteners Adapter Sleeve Bushing ,Dowel Pin,Locating Pin,Steel Foot Cups etc. FAQ Q: What is your main products? A: Our main products are fasteners: bolts, screws, rods, nuts, washers, anchors and rivets.Meantime, our company also produces stamping parts and machined parts. Q: What is your manufacturing capacity? A: Our production capacity exceeds 3 million pieces per week. We currently have more than 50 production lines and we are constantly growing. Q: how can we guarantee quality? A: Always a pre-production sample before mass production; Always final Inspection before shipment; Q: How to ensure that every process's quality A: Every process will be checked by our quality inspection department which insures every product's quality. In the production of products, we will personally go to the factory to check the quality of products. Q: What is your payment method? A: 30% value of T/T in advance and other 70% balance on B/L copy. For small order less than1000USD, would suggest you pay 100% in advance to reduce the bank charges. Q: Can you provide a sample? A: Sure, Our sample is provided free of charge, but not including courier fees. Q: How long is your delivery time? A: We have large stock, 3 days for stock items,7-15days for production. Q: What's your price terms ? A: EXW/FOB/CIF/CFR/FCA/CPT/CIP/DAP/DDP Q: Wonder if you accept small orders? A: Do not worry. Please feel free to contact us, in order to give our clients more convenience ,we accept small order. Q: Can we print our own logo ? A: Yes, we can make it according to your request.

Volute springs, designed&manufactured according to JB/T11698-2013 standard (SHANGHAI HEGONG participated in drafting the standard). Its main features are small size and large load. HEGONG Volute springs is widely used in small spaces and large loads for vibration reduction. It has three structures as Equal helix angle, Equal pitch, and Equal stress.

U-shaped spring for elevator safety gear also be known as "U-shaped spring", "safety gear spring", "elevator safety gear leaf spring", mainly be used for progressive elevator safety gear. Safety gear is the most important safety component in an elevator, the safety of the elevator just can be guaranteed with safe and effective safety gear. And the HEGONG safety gear spring is the core component of safety gear, it is the last barrier of elevator safety. When the elevator falls out of control and exceeds the limited speed, the U-shaped spring CHINA starts to work, which stops the lift car in emergency and clamps it on the guide rail, ensure the safety of the elevator passengers. We have been working closely with a number of well-known elevator manufacturers, and developed U-spring for a number of progressive safety gears successfully. If you have any questions, please contact us (Tech@DiscSpringsMFG.com), our technical engineers will work closely with you to design, develop the proper spring according to your requirements.

Wave springs also are known as "wave spring washers" are round elastic parts with several sine waves on the metal foil ring. There are several structures as the table, including "Single-turn wave springs with partially overlapping", "Single-turn wave springs with gap", "Closed Single-turn wave springs", "Multi- turn (Peak to Peak) wave springs", "Multi-turn (Peak to Peak) wave springs with Shim Ends", "Nested wave springs". Wave spring China is a precise elastic element, which is suitable for mounting in the parts with limited installation space and stiffness requirements that other elastic elements cannot meet. Due to its unique structural form, the total height and working height of the wave spring are lower than traditional elastic elements, so it can reduce the space size of the parts and the overall cost of the product, and has an excellent cost performance.

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.