--- title: "Hex Serrated Flange Dome Cap Nut Insert Square Cage Lock Heavy Coupling Hex Nuts Stainless Steel Weld Hex Flange Nut" description: "Hex Serrated Flange Dome Cap Nut Insert Square Cage Lock Heavy Coupling Hex Nuts Stainle… — Cap, Dome & Acorn Nuts. MOQ 1,000 pieces, US$0.012." url: https://engineeringhardware.com/product/hex-serrated-flange-dome-cap-nut-insert-square-cage-lock-heavy-coupling-hex-nuts/ source: Engineering Hardware & Fasteners --- # Hex Serrated Flange Dome Cap Nut Insert Square Cage Lock Heavy Coupling Hex Nuts Stainless Steel Weld Hex Flange Nut [![Hex Serrated Flange Dome Cap Nut Insert Square Cage Lock Heavy Coupling Hex Nuts Stainless Steel Weld Hex Flange Nut](https://img.engineeringhardware.com/Hex-Serrated-Flange-Dome-Cap-Nut-Insert-Square-Cage-Lock-Heavy-Coupling-Hex-Nuts-Stainless-Steel-Weld-Hex-Flange-Nut.webp)](https://img.engineeringhardware.com/Hex-Serrated-Flange-Dome-Cap-Nut-Insert-Square-Cage-Lock-Heavy-Coupling-Hex-Nuts-Stainless-Steel-Weld-Hex-Flange-Nut.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Nuts › Cap, Dome & Acorn Nuts](https://engineeringhardware.com/fastener-products/nuts/cap-dome-acorn-nuts/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/hex-serrated-flange-dome-cap-nut-insert-square-cage-lock-heavy-coupling-hex-nuts.md) Model no. **lock nut** US$0.012 / piece MOQ 1,000 pieces · Final price confirmed in your quote - **Thread Distribution:** Internal Thread - **Surface:** Polish - **Material:** Copper - **Customized:** Customized - **Threaded:** Pipe Thread - **Finish:** Pickling - **Packing:** Small Bag Packaging - **Package Size:** 26.00cm * 24.00cm * 15.00cm Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Hex%20Serrated%20Flange%20Dome%20Cap%20Nut%20Insert%20Square%20Cage%20Lock%20Heavy%20Coupling%20Hex%20Nuts%20Stainless%20Steel%20Weld%20Hex%20Flange%20Nut%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fhex-serrated-flange-dome-cap-nut-insert-square-cage-lock-heavy-coupling-hex-nuts%2F) Specifications are as listed for this product. Engineering Hardware & Fasteners confirms ratings, mating parts, compatibility, packing and lead time with you before you order. ## Specifications | Model NO. | lock nut | | --- | --- | | Thread Distribution | Internal Thread | | Surface | Polish | | Material | Copper | | Customized | Customized | | Warranty | 1 Year | | Threaded | Pipe Thread | | Finish | Pickling | | Packing | Small Bag Packaging | | Transport Package | Plastic Bag+Carton+Pallet | | Specification | customized | | Origin | China | | HS Code | 74153390 | | Production Capacity | 100000/M | | Package Size | 26.00cm * 24.00cm * 15.00cm | | Package Gross Weight | 23.000kg | | Customization | Available | | Connection | Female | | Head Code | Round | | Shipping Cost | Contact the supplier about freight and estimated delivery time. | | Standard | ASME/ANSI B18.2.2; DIN985, DIN982 | | Size | 1/4''-1-1/2''; M5-M24 | | Grade | SAE J995 Gr.2, 5,8; CL4, 5, 6, 8, 10, 12 | | Thread | M, UNC, UNF | | Test Equipments | Caliper,Go&No-go gauge,Tensile test machine,Hardness tester,Salt spraying tester, H.D.G thickness tester, 3D | | Supply Ability | 1000 tons per month | | MinimumOrde | 100kgs for each specification | | Trade Term | FOB/CIF/CFR/CNF/EXW/DDU/DDP | | Payment Term | T/T, L/C , D/A , D/P , Western Union ,MoneyGram ,etc | | Market | South&north Amrica/Europe/East&South east Asia/ Australia and ect. | | Professional | More than 15 years experience in fasteners industry | | Our advantage | One-stop shopping; | | Notice | Please lets know the Size, quantity, Material or Grade, surface, If it is special and Non-standard products, please supply the Drawing or Photos or Samples to us | | Category | [Cap, Dome & Acorn Nuts](https://engineeringhardware.com/fastener-products/nuts/cap-dome-acorn-nuts/) | ## Technical parameters | Nylon Insert Lock Nut | | | --- | --- | | Standard: | ASME/ANSI B18.2.2; DIN985, DIN982 | | Size: | 1/4''-1-1/2''; M5-M24 | | Material: | Carbon Steel, Alloy Steel, Stainless Steel, Brass | | Grade: | SAE J995 Gr.2, 5,8; CL4, 5, 6, 8, 10, 12 | | Thread: | M, UNC, UNF | | Finish: | Plain,ZincPlated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G | | Packing: | bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand | | Application: | Structural Steel; Metal Buliding; Oil&Gas; Tower&Pole; Wind Energy; Mechanical Machine; Automobile: Home Decorating | | Test Equipments: | Caliper,Go&No-go gauge,Tensile test machine,Hardness tester,Salt spraying tester, H.D.G thickness tester, 3D detector,Projector,Magnetic flaw detecter | | Supply Ability: | 1000 tons per month | | MinimumOrde: | 100kgs for each specification | | Trade Term: | FOB/CIF/CFR/CNF/EXW/DDU/DDP | | Payment Term: | T/T, L/C , D/A , D/P , Western Union ,MoneyGram ,etc | | Market: | South&north Amrica/Europe/East&South east Asia/ Australia and ect. | | Professional: | More than 15 years experience in fasteners industry Our Main market is North&South America and proficient in IFI standard. | | Our advantage: | One-stop shopping; High quality; Competitive price; Timely delivery; Technical support; Supply Material and Test Reports; Samples for free | | Notice: | Please lets know the Size, quantity, Material or Grade, surface, If it is special and Non-standard products, please supply the Drawing or Photos or Samples to us | ## Description Hex Serrated Flange Dome Cap Nut Insert Square Cage Lock Heavy Coupling Hex Nuts Stainless Steel Weld Hex Flange Nut is part of our cap, dome & acorn nuts range (Nuts). ### Key details - **Standard:** ASME/ANSI B18.2.2; DIN985, DIN982 - **Material:** Copper - **Grade:** SAE J995 Gr.2, 5,8; CL4, 5, 6, 8, 10, 12 - **Size:** 1/4''-1-1/2''; M5-M24 - **Thread:** M, UNC, UNF - **Finish:** Pickling - **Connection:** Female - **Thread Distribution:** Internal Thread Available configurations include thread distribution, surface, material, customized and threaded. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 1,000 pieces at US$0.012 per piece. Send one inquiry with the part number, quantity and destination, and Engineering Hardware & Fasteners confirms size, thread, material, grade, finish, price, lead time and shipping, checks the goods before dispatch and ships them to you. ## Frequently asked questions ### What is the minimum order quantity (MOQ) for Hex Serrated Flange Dome Cap Nut Insert Square Cage Lock Heavy Coupling Hex Nuts Stainless Steel Weld Hex Flange Nut? The listed minimum order is 1,000 pieces, at US$0.012 per piece. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size. ### What are the main specifications of Hex Serrated Flange Dome Cap Nut Insert Square Cage Lock Heavy Coupling Hex Nuts Stainless Steel Weld Hex Flange Nut? Standard: ASME/ANSI B18.2.2; DIN985, DIN982; Material: Copper; Grade: SAE J995 Gr.2, 5,8; CL4, 5, 6, 8, 10, 12; Size: 1/4''-1-1/2''; M5-M24; Thread: M, UNC, UNF; Finish: Pickling. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include thread distribution, surface, material, customized and threaded. Size, thread, length, material and grade, surface finish, head marking, packaging and labels can be quoted to your specification or drawing. ### What is the lead time and how is it shipped? Lead time depends on quantity and customization and is confirmed in your quote. Engineering Hardware & Fasteners checks the goods before dispatch and ships by express, air or sea; mixed orders can be consolidated in one shipment. ### Which other cap, dome & acorn nuts are available? The Cap, Dome & Acorn Nuts category lists 846 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/nuts/cap-dome-acorn-nuts/](https://engineeringhardware.com/fastener-products/nuts/cap-dome-acorn-nuts/) How we work ## Specified, checked and shipped by Engineering Hardware & Fasteners Engineering Hardware & Fasteners supplies bolts, screws, nuts, washers, anchors, rivets and fastening hardware to equipment makers, contractors, distributors and maintenance teams. Orders go through one controlled process: size, thread, material, grade and finish confirmed, samples approved, dimensions, thread fit and plating checked before packing, then packed for export — standard or made to drawing. - DIN, ISO, ASTM, ANSI, JIS and GB standard parts - Non-standard parts made to your drawing - Dimensions, thread gauges and plating checked before packing - Export cartons and pallets, consolidated mixed orders - Samples available for approval before mass production [![Production floor](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-01-production-floor-1024x683.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-01-production-floor.webp) Production floor [![Inspection bench](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-02-inspection-bench-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-02-inspection-bench.webp) Inspection bench [![Sorting & 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custom quote →](https://engineeringhardware.com/contact/) ## Request a quote for this product ## Related products [All Cap, Dome & Acorn Nuts →](https://engineeringhardware.com/fastener-products/nuts/cap-dome-acorn-nuts/) [![Made in China Custom Made Hex Domed Head Nylon Black White Plastic M16 M18 M20 Cap Nuts](https://img.engineeringhardware.com/Made-in-China-Custom-Made-Hex-Domed-Head-Nylon-Black-White-Plastic-M16-M18-M20-Cap-Nuts.webp)](https://engineeringhardware.com/product/made-in-china-custom-made-hex-domed-head-nylon-black-white-plastic-m16-m18-m20-cap/) Cap, Dome & Acorn Nuts ### [Made in China Custom Made Hex Domed Head Nylon Black White Plastic M16 M18 M20 Cap Nuts](https://engineeringhardware.com/product/made-in-china-custom-made-hex-domed-head-nylon-black-white-plastic-m16-m18-m20-cap/) DIN, ANSI, GB, JIS, GOST, BSW · Carbon Steel **US$0.12 – 1.20**MOQ 1,000 pieces [![Brass Aluminum High Strength Steel Cap 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Nuts ### [Standard and Non-Standard Quality Brass Hex Cap Nut](https://engineeringhardware.com/product/standard-and-non-standard-quality-brass-hex-cap-nut/) Hexagon Head · DIN, ANSI, GB, JIS, GOST, BSW, ASTM **US$0.084 – 0.24**MOQ 1,000 pieces **US$0.012**MOQ 1,000 piecesGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Hex%20Serrated%20Flange%20Dome%20Cap%20Nut%20Insert%20Square%20Cage%20Lock%20Heavy%20Coupling%20Hex%20Nuts%20Stainless%20Steel%20Weld%20Hex%20Flange%20Nut%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fhex-serrated-flange-dome-cap-nut-insert-square-cage-lock-heavy-coupling-hex-nuts%2F)