| Materials: | Carbon steel, Stainless steel |
| Size: | Customized as per detailed sizes or drawings |
| MOQ: | 1,000pcs above, depends on products or dimensions |
| Sample lead time: | 3-7 working days mostly |
| Massive lead time: | 10-15 working days mostly |
| Trade terms: | EXW/FOB/CIF/CNF/FCA/DAP/DDP/DDU |
| Package: | PE bags + brown carton + pallets or customized as demands |
Three-hole nuts, also known as three-ear nuts, are a special fastener with three deep holes and three surface protrusions, which makes it convenient to use to lock bolts. This design not only enhances its fixing strength, but also makes it popular in occasions where frequent disassembly and assembly are required.
Material and manufacturing process
Three-hole nuts are usually made of high-strength metal materials to ensure that they can withstand large tightening forces and repeated use requirements. During the manufacturing process, cold heading forming process is usually used to ensure the quality and durability of the nuts.
Application fields and advantages
Three-hole nuts are widely used in many fields, including mechanical equipment, metal structures, wood connections, etc. Especially in occasions where frequent disassembly and assembly are required, its convenience makes three-hole nuts popular. In addition, three-hole nuts can also be used to fix composite panels of refrigerated trucks, such as discs with a diameter of 27mm and internal thread diameter of 8mm.
Installation method and usage scenarios
The installation of three-hole nuts is relatively simple. Just put it on the bolt or screw and rotate it with a wrench or spanner to complete the installation. Due to its strong fixing force, reusability and easy installation, three-hole nuts are widely used in mechanical equipment such as aviation, ships, and automobiles.
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.
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
Twisted shear high-strength bolts are a special type of bolt with high strength and excellent torsional shear performance, widely used in engineering structures.
New energy vehicle stamping parts, Metal Stamping Parts
Material 1.StainlessSteel:SS201,SS303,SS304,SS316,SS410,SS420 2.Steel:C45(K1045), C46(K1046),C20 3.Carbon Steel: 1010,1035,1045 4.Aluminum or Aluminum Alloy:Al6061,Al6063,Al7075,etc 5.Brass:H59,H62,Copper,Bronze Grade SAE J429 Gr.2, 5,8; ASTM A307Gr.A,A193 B7,B8,B8M,A194 2H, Class 4.8, 5.8, 6.8, 8.8, 10.9, 12.9 and etc. Finish Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G and etc. Thread UNC,UNF,UEF,UN,UNS Standard ISO, DIN, ANSI, JIS, BS and Non-standard Sample Service Samples are all in free. Certificate ISO9001,CE, SGS, BV Advantage 1. Competitive price; 2. OEM service available Packing Bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand Lead Time 7-15 work days after order confirmed Application Structural Steel; Metal Buliding; Oil&Gas; Tower&Pole; Wind Energy; Mechanical Machine; Automobile: Home Decorating and etc. Notes Special specifications and marks can be made according to customers requirements;
A double-stacked self-locking washer is a special mechanical connector designed to prevent bolts from loosening, especially in high-vibration or high-load environments.It consists of two spring washers nested inside each other in an S-shaped configuration. The outer spring washer has ends that bend inwards, while the inner spring washer has ends that bend outwards, creating a two-way self-locking feature.The working principle of this washer is based on elastic deformation. When placed between connecting parts, the inner curved part of the outer spring ring interlocks with the outer curved part of the inner spring ring, creating a locking force that prevents the connecting parts from loosening under vibration or load.The advantages of the double-stacked self-locking washer include high reliability, easy installation, and a wide range of applications.It is suitable for various mechanical connections, such as threaded connections and pin connections, and is widely used in industrial production and machinery manufacturing, especially in the automotive manufacturing process, where it is often used to connect engine and chassis systems to improve the safety and reliability of the car.
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
Type:SCISSOR JACK,User Car Jack Place of Origin:Handan, China Material :Stainless steel,Carbon steel 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
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
Bracket 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.
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.
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
Twisted shear high-strength bolts are a special type of bolt with high strength and excellent torsional shear performance, widely used in engineering structures.
