--- title: "Supply Self Drilling Rock Anchor Bolt Using for Tunnel Support" description: "Supply Self Drilling Rock Anchor Bolt Using for Tunnel Support — Foundation & Anchor Bolts. Material: Stainless Steel. MOQ 1 piece, US$2.52 – 4.20." url: https://engineeringhardware.com/product/supply-self-drilling-rock-anchor-bolt-using-for-tunnel-support/ source: Engineering Hardware & Fasteners --- # Supply Self Drilling Rock Anchor Bolt Using for Tunnel Support [![Supply Self Drilling Rock Anchor Bolt Using for Tunnel Support](https://img.engineeringhardware.com/Supply-Self-Drilling-Rock-Anchor-Bolt-Using-for-Tunnel-Support.webp)](https://img.engineeringhardware.com/Supply-Self-Drilling-Rock-Anchor-Bolt-Using-for-Tunnel-Support.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Anchors & Construction Fixings › Foundation & Anchor Bolts](https://engineeringhardware.com/fastener-products/anchors-construction-fixings/foundation-anchor-bolts/) Updated 2026-11-03 · [Markdown version](https://engineeringhardware.com/product/supply-self-drilling-rock-anchor-bolt-using-for-tunnel-support.md) Model no. **METAL BAR** US$2.52 – 4.20 / piece MOQ 1 piece · Final price confirmed in your quote - **Finish:** Black - **Head Style:** Round - **Material:** Stainless Steel - **Outer Diameter:** 38 - **Inner Diameter:** 23 - **Ultimate Tensile Strength:** 912 - **Yield Strength:** 730 - **Package Size:** 60.00cm * 30.00cm * 30.00cm Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Supply%20Self%20Drilling%20Rock%20Anchor%20Bolt%20Using%20for%20Tunnel%20Support%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fsupply-self-drilling-rock-anchor-bolt-using-for-tunnel-support%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 | | --- | --- | | Application | Machinery, Environmental, Building | | Finish | Black | | Model NO. | METAL BAR | | Head Style | Round | | Material | Stainless Steel | | Type | Round Head | | Outer Diameter | 38 | | Inner Diameter | 23 | | Area | 548 | | Ultimate Tensile Load | 500 | | Yield Load | 400 | | Ultimate Tensile Strength | 912 | | Yield Strength | 730 | | Nominal Weight | 4.2 | | Transport Package | Wooden | | Specification | standard | | Origin | China | | Production Capacity | 100000 Sets Per Month | | Package Size | 60.00cm * 30.00cm * 30.00cm | | Package Gross Weight | 24.000kg | | Category | [Foundation & Anchor Bolts](https://engineeringhardware.com/fastener-products/anchors-construction-fixings/foundation-anchor-bolts/) | ## Technical parameters | Type | METAL BAR Diameter(mm) | anchoring KN | | --- | --- | --- | | deformed steel bar 6s≥335MPa | φ22 | >125 | | φ20 | >105 | | | φ18 | >85 | | | φ16 | >75 | | | round steel bar 6s≥235MPa | φ22 | >90 | | φ20 | >70 | | | φ18 | >60 | | | φ16 | >50 | | | d | length | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | | 1400 | 1600 | 1800 | 2000 | 2200 | 2400 | 2600 | | | φ16 | - | + | + | + | - | - | - | | φ18 | - | + | + | + | + | - | - | | φ20 | - | - | + | + | + | + | - | | φ22 | - | - | - | + | + | + | + | | | SPEC. | MATERIAL | BEARING CAPACITY (kn) | HIGH-STRENGTH PLATE(Spherical) | | | | --- | --- | --- | --- | --- | --- | --- | | SIZE (mm) | BEARING CAPACITY (kn) | BORE DIAMETER (mm) | | | | | | All-Thread Rebar Rock Bolt | DQ-16 | HRB335 | ≥100 | 120×120×6 | ≥125 | 23 | | DQ-18 | HRB335 | ≥125 | 120×120×8 | ≥170 | 23 | | | DQ-20 | HRB335 | ≥155 | 120×120×8 | ≥170 | 26 | | | DQ-22 | HRB335 | ≥185 | 150×150×8 | ≥220 | 26 | | ## Description Supply Self Drilling Rock Anchor Bolt Using for Tunnel Support is part of our foundation & anchor bolts range (Anchors & Construction Fixings). ### Key details - **Type:** Round Head - **Material:** Stainless Steel - **Head Style:** Round - **Finish:** Black - **Application:** Machinery, Environmental, Building - **Outer Diameter:** 38 - **Inner Diameter:** 23 - **Area:** 548 Available configurations include finish, head style, material, outer diameter and inner diameter. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 1 piece at US$2.52 – 4.20 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 Supply Self Drilling Rock Anchor Bolt Using for Tunnel Support? The listed minimum order is 1 piece, at US$2.52 – 4.20 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 Supply Self Drilling Rock Anchor Bolt Using for Tunnel Support? Type: Round Head; Material: Stainless Steel; Head Style: Round; Finish: Black; Application: Machinery, Environmental, Building; Outer Diameter: 38. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include finish, head style, material, outer diameter and inner diameter. 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 foundation & anchor bolts are available? The Foundation & Anchor Bolts category lists 2,223 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/anchors-construction-fixings/foundation-anchor-bolts/](https://engineeringhardware.com/fastener-products/anchors-construction-fixings/foundation-anchor-bolts/) 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 Foundation & Anchor Bolts →](https://engineeringhardware.com/fastener-products/anchors-construction-fixings/foundation-anchor-bolts/) [![Customizable Car Repair Gecko Anchor Bolt M6-M24 Carbon Steel Galvanized for Equipment Fixing](https://img.engineeringhardware.com/Customizable-Car-Repair-Gecko-Anchor-Bolt-M6-M24-Carbon-Steel-Galvanized-for-Equipment-Fixing.webp)](https://engineeringhardware.com/product/customizable-car-repair-gecko-anchor-bolt-m6-m24-carbon-steel-galvanized-for/) Foundation & Anchor Bolts ### [Customizable Car Repair Gecko Anchor Bolt M6-M24 Carbon Steel Galvanized for Equipment Fixing](https://engineeringhardware.com/product/customizable-car-repair-gecko-anchor-bolt-m6-m24-carbon-steel-galvanized-for/) Stainless Steel · ISO, GS, RoHS, CE **US$0.0018 – 0.0024**MOQ 1,000 pieces [![Long Working Time 400ml Foundation Heavy-Duty Anchor Bolt Styrene Free 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China](https://engineeringhardware.com/product/supanchor-t30-16-self-drilling-anchor-bolt-sda-bolt-in-china/) Round Head · DIN, En10083-1 **US$4.20**MOQ 1 meter [![Durable L Bolts with Superior Coatings for Extended Lifespan](https://img.engineeringhardware.com/Durable-L-Bolts-with-Superior-Coatings-for-Extended-Lifespan.webp)](https://engineeringhardware.com/product/durable-l-bolts-with-superior-coatings-for-extended-lifespan/) Foundation & Anchor Bolts ### [Durable L Bolts with Superior Coatings for Extended Lifespan](https://engineeringhardware.com/product/durable-l-bolts-with-superior-coatings-for-extended-lifespan/) Foundation Bolts · DIN, ANSI, GB, JIS, BSW, GOST **US$0.072 – 0.12**MOQ 1,000 pieces **US$2.52 – 4.20**MOQ 1 pieceGet a 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