--- title: "Internal Thread Insert Hollow Screw Sleeve Rebar Coupler Grouting Rebar Building Materials Hexagonal" description: "Internal Thread Insert Hollow Screw Sleeve Rebar Coupler Grouting Rebar Building Materia… — Thread Repair & Solid Threaded Inserts." url: https://engineeringhardware.com/product/internal-thread-insert-hollow-screw-sleeve-rebar-coupler-grouting-rebar-building/ source: Engineering Hardware & Fasteners --- # Internal Thread Insert Hollow Screw Sleeve Rebar Coupler Grouting Rebar Building Materials Hexagonal [![Internal Thread Insert Hollow Screw Sleeve Rebar Coupler Grouting Rebar Building Materials Hexagonal](https://img.engineeringhardware.com/Internal-Thread-Insert-Hollow-Screw-Sleeve-Rebar-Coupler-Grouting-Rebar-Building-Materials-Hexagonal.webp)](https://img.engineeringhardware.com/Internal-Thread-Insert-Hollow-Screw-Sleeve-Rebar-Coupler-Grouting-Rebar-Building-Materials-Hexagonal.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Threaded Inserts & Clinch Fasteners › Thread Repair & Solid Threaded Inserts](https://engineeringhardware.com/fastener-products/threaded-inserts-clinch-fasteners/thread-repair-solid-threaded-inserts/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/internal-thread-insert-hollow-screw-sleeve-rebar-coupler-grouting-rebar-building.md) Model no. **13-35mm** | **US$0.24**500–599 pieces | **US$0.35**600–699 pieces | **US$0.41**700–799 pieces | **US$0.74**800–999 pieces | **US$0.90**1,000+ pieces | | --- | --- | --- | --- | --- | MOQ 500 pieces · Final price confirmed in your quote - **Head Code:** Round - **Thread Distribution:** Internal Thread - **Surface:** Polish - **Material:** Carbon Steel - **Customized:** Customized - **S45C -yield strength 420Mpa, Tensile strength:** 600-650MPa - **Size:** 16mm/18mm/20mm/25mm/28mm/32mm/36mm/40mm - **Packing:** By bags and pallets packing, or wooden case packing as required (25KG smaller packing, 1700KG per pallet) Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Internal%20Thread%20Insert%20Hollow%20Screw%20Sleeve%20Rebar%20Coupler%20Grouting%20Rebar%20Building%20Materials%20Hexagonal%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Finternal-thread-insert-hollow-screw-sleeve-rebar-coupler-grouting-rebar-building%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 | Customization | Available | | --- | --- | | Connection | Welding | | Head Code | Round | | Model NO. | 13-35mm | | Thread Distribution | Internal Thread | | Surface | Polish | | Material | Carbon Steel | | Technics | Casting | | Application | Oil Pipe | | Customized | Customized | | Certification | CQC | | Warranty | 1 Year | | Delivery Time | 10-15days | | Transport Package | Bag and Pallet | | Specification | 1.1*1.1 | | Origin | China | | HS Code | 7318190000 | | Production Capacity | 15000000PCS | | Name | Thread Rebar Couplers Standard Type | | Used for Rebar | HRB400/Grade 65/ and so on with rebar yield strength same as 500Mpa or lower than that. | | S45C -yield strength 420Mpa, Tensile strength | 600-650MPa | | Size | 16mm/18mm/20mm/25mm/28mm/32mm/36mm/40mm | | Packing | By bags and pallets packing, or wooden case packing as required (25KG smaller packing, 1700KG per pallet) | | Sample | Free existing samples for checking dimension and quality | | Production time | 15-40 days based on different quantity after receive the prepayment | | Shipping Port | Xingang,Tianjin Port, Shanghai Port, China. | | Payment Terms | TT / LC | | Certificate | ISO/ CE | | Category | [Thread Repair & Solid Threaded Inserts](https://engineeringhardware.com/fastener-products/threaded-inserts-clinch-fasteners/thread-repair-solid-threaded-inserts/) | ## Technical parameters | Name: | Thread Rebar Couplers Standard Type | | --- | --- | | Used for Rebar: | HRB400/Grade 65/ and so on with rebar yield strength same as 500Mpa or lower than that. | | Raw Material: | S45C -yield strength 420Mpa, Tensile strength: 600-650MPa | | Size: | 16mm/18mm/20mm/25mm/28mm/32mm/36mm/40mm | | Packing: | By bags and pallets packing, or wooden case packing as required (25KG smaller packing, 1700KG per pallet) | | Sample: | Free existing samples for checking dimension and quality | | Production time: | 15-40 days based on different quantity after receive the prepayment | | Shipping Port: | Xingang,Tianjin Port, Shanghai Port, China. | | Payment Terms: | TT / LC | | Certificate: | ISO/ CE | | SIZE (mm) | Out Diameter (mm) | Length (mm) | Pitch (mm) | N.W (KG) | PACKING IN ONE BAG (NOS) | 1 BAG WEIGHT (KG) | Approvals/ Certificate | | --- | --- | --- | --- | --- | --- | --- | --- | | 16 | 24 | 42 | 2.5 | 0.092 | 250 | 23.00 | CE / ISO | | 18 | 27 | 45 | 2.5 | 0.136 | 200 | 27.20 | CE / ISO | | 20 | 30 | 50 | 2.5 | 0.159 | 132 | 20.98 | CE / ISO | | 22 | 33 | 54 | 2.5 | 0.21 | 121 | 25.41 | CE / ISO | | 25 | 38 | 62 | 3.0 | 0.34 | 80 | 27.20 | CE / ISO | | 28 | 42 | 68 | 3.0 | 0.46 | 56 | 25.76 | CE / ISO | | 32 | 48 | 76 | 3.0 | 0.633 | 42 | 26.58 | CE / ISO | | 36 | 53 | 84 | 3.0 | 0.905 | 27 | 24.43 | CE / ISO | | 40 | 59 | 95 | 3.0 | 1.16 | 25 | 29.00 | CE / ISO | ## Description Internal Thread Insert Hollow Screw Sleeve Rebar Coupler Grouting Rebar Building Materials Hexagonal is part of our thread repair & solid threaded inserts range (Threaded Inserts & Clinch Fasteners). ### Key details - **Material:** Carbon Steel - **Size:** 16mm/18mm/20mm/25mm/28mm/32mm/36mm/40mm - **Connection:** Welding - **Application:** Oil Pipe - **Certification:** CQC - **Head Code:** Round - **Thread Distribution:** Internal Thread - **Surface:** Polish Available configurations include head code, thread distribution, surface, material and customized. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 500 pieces at US$0.24 – 0.90 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 Internal Thread Insert Hollow Screw Sleeve Rebar Coupler Grouting Rebar Building Materials Hexagonal? The listed minimum order is 500 pieces, at US$0.24 – 0.90 per piece. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size. ### How does the price change with quantity? Volume pricing: US$0.24 for 500–599 pieces; US$0.35 for 600–699 pieces; US$0.41 for 700–799 pieces; US$0.74 for 800–999 pieces; US$0.90 for 1,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote. ### What are the main specifications of Internal Thread Insert Hollow Screw Sleeve Rebar Coupler Grouting Rebar Building Materials Hexagonal? Material: Carbon Steel; Size: 16mm/18mm/20mm/25mm/28mm/32mm/36mm/40mm; Connection: Welding; Application: Oil Pipe; Certification: CQC; Head Code: Round. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include head code, thread distribution, surface, material and customized. 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 thread repair & solid threaded inserts are available? The Thread Repair & Solid Threaded Inserts category lists 961 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/threaded-inserts-clinch-fasteners/thread-repair-solid-threaded-inserts/](https://engineeringhardware.com/fastener-products/threaded-inserts-clinch-fasteners/thread-repair-solid-threaded-inserts/) 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 & packing](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-03-sorting-and-packing-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-03-sorting-and-packing.webp) Sorting & packing [![Parts warehouse](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-04-parts-warehouse-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-04-parts-warehouse.webp) Parts warehouse [![Sample review](https://engineeringhardware.com/wp-content/uploads/2026/11/office-02-office-sample-review-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/office-02-office-sample-review.webp) Sample review [![Sales office](https://engineeringhardware.com/wp-content/uploads/2026/11/office-01-daily-sales-office-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/office-01-daily-sales-office.webp) Sales office [More about us →](https://engineeringhardware.com/about/) · [Request a sample or custom quote →](https://engineeringhardware.com/contact/) ## Request a quote for this product ## Related products [All Thread Repair & Solid Threaded Inserts →](https://engineeringhardware.com/fastener-products/threaded-inserts-clinch-fasteners/thread-repair-solid-threaded-inserts/) [![Self Tapping Thread Insert Installation Tool Hand Wrench M2 to M16](https://img.engineeringhardware.com/Self-Tapping-Thread-Insert-Installation-Tool-Hand-Wrench-M2-to-M16.webp)](https://engineeringhardware.com/product/self-tapping-thread-insert-installation-tool-hand-wrench-m2-to-m16/) Thread Repair & Solid Threaded Inserts ### [Self Tapping Thread Insert Installation Tool Hand Wrench M2 to M16](https://engineeringhardware.com/product/self-tapping-thread-insert-installation-tool-hand-wrench-m2-to-m16/) Hexagon Head · DIN, GB, ANSI, BSW, JIS, GOST **US$0.0012 – 0.012**MOQ 5,000 pieces [![High-Quality Inconel X-750 M6 to M20 Wire Threaded Inserts for Industrial 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Inserts ### [Wholesale Metric DIN985 Carbon Steel Nylon Insert Lock Nut Nylon Black Type for Mechanical Assembly Threaded Fastener](https://engineeringhardware.com/product/wholesale-metric-din985-carbon-steel-nylon-insert-lock-nut-nylon-black-type-for/) Hexagon Head · DIN, ANSI, GB, JIS, BSW **US$0.036 – 0.36**MOQ 10,000 pieces [![Dark Yellow Zinc Plated Slotted Thread Sleeve Screw Self Tapping Threaded Insert](https://img.engineeringhardware.com/Dark-Yellow-Zinc-Plated-Slotted-Thread-Sleeve-Screw-Self-Tapping-Threaded-Insert.webp)](https://engineeringhardware.com/product/dark-yellow-zinc-plated-slotted-thread-sleeve-screw-self-tapping-threaded-insert/) Thread Repair & Solid Threaded Inserts ### [Dark Yellow Zinc Plated Slotted Thread Sleeve Screw Self Tapping Threaded Insert](https://engineeringhardware.com/product/dark-yellow-zinc-plated-slotted-thread-sleeve-screw-self-tapping-threaded-insert/) Spring · DIN, ANSI, GB, JIS, GOST, BSW **US$0.012 – 0.12**MOQ 1 piece [![DIN8140 Wire 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Insert Nut Custom Size Internal Thread Insert Nut Manufacturer](https://img.engineeringhardware.com/OEM-Brass-Thread-Insert-Nut-Custom-Size-Internal-Thread-Insert-Nut-Manufacturer.webp)](https://engineeringhardware.com/product/oem-brass-thread-insert-nut-custom-size-internal-thread-insert-nut-manufacturer/) Thread Repair & Solid Threaded Inserts ### [OEM Brass Thread Insert Nut Custom Size Internal Thread Insert Nut Manufacturer](https://engineeringhardware.com/product/oem-brass-thread-insert-nut-custom-size-internal-thread-insert-nut-manufacturer/) Round Head · DIN, ANSI, GB, JIS **US$0.012 – 0.12**MOQ 1,000 pieces [![Aluminum T Bolt and Nut Thread Insert M6](https://img.engineeringhardware.com/Aluminum-T-Bolt-and-Nut-Thread-Insert-M6.webp)](https://engineeringhardware.com/product/aluminum-t-bolt-and-nut-thread-insert-m6/) Thread Repair & Solid Threaded Inserts ### [Aluminum T Bolt and Nut Thread Insert M6](https://engineeringhardware.com/product/aluminum-t-bolt-and-nut-thread-insert-m6/) Hexagon Head · DIN, ANSI, GB, JIS, BSW, GOST **US$1,584 – 1,800**MOQ 100,000 pieces **US$0.24 – 0.90**MOQ 500 piecesGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Internal%20Thread%20Insert%20Hollow%20Screw%20Sleeve%20Rebar%20Coupler%20Grouting%20Rebar%20Building%20Materials%20Hexagonal%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Finternal-thread-insert-hollow-screw-sleeve-rebar-coupler-grouting-rebar-building%2F)