--- title: "Sinorock Efficient and Safe Underground Excavation Works Self Drilling Threaded Anchor Bolt" description: "Sinorock Efficient and Safe Underground Excavation Works Self Drilling Threaded Anchor B… — Assortment Kits & Mixed Fastener Sets. MOQ 30 pieces, US$6.60." url: https://engineeringhardware.com/product/sinorock-efficient-and-safe-underground-excavation-works-self-drilling-threaded/ source: Engineering Hardware & Fasteners --- # Sinorock Efficient and Safe Underground Excavation Works Self Drilling Threaded Anchor Bolt [![Sinorock Efficient and Safe Underground Excavation Works Self Drilling Threaded Anchor Bolt](https://img.engineeringhardware.com/Sinorock-Efficient-and-Safe-Underground-Excavation-Works-Self-Drilling-Threaded-Anchor-Bolt.webp)](https://img.engineeringhardware.com/Sinorock-Efficient-and-Safe-Underground-Excavation-Works-Self-Drilling-Threaded-Anchor-Bolt.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Fastener Sets & Assemblies › Assortment Kits & Mixed Fastener Sets](https://engineeringhardware.com/fastener-products/fastener-sets-assemblies/assortment-kits-mixed-fastener-sets/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/sinorock-efficient-and-safe-underground-excavation-works-self-drilling-threaded.md) Model no. **whole set of SDA** US$6.60 / piece MOQ 30 pieces · Final price confirmed in your quote - **Material:** High Strength Alloy Steel - **Diameter(mm):** 42/51//76/90/100/110/115/130/150/160/180/200 - **Bit Material:** Tungsten and Manganse Steel - **Package Size:** 42.00cm * 38.00cm * 25.00cm Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Sinorock%20Efficient%20and%20Safe%20Underground%20Excavation%20Works%20Self%20Drilling%20Threaded%20Anchor%20Bolt%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fsinorock-efficient-and-safe-underground-excavation-works-self-drilling-threaded%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 | | --- | --- | | After-sales Service | Whole Plan Provider | | Warranty | Commonly Used About One Year | | Model NO. | whole set of SDA | | Type | Whole Set of Anchor System | | Application | Tunnel Boring Machine | | Certification | ISO9001: 2000, BV Certificated | | Condition | New | | Material | High Strength Alloy Steel | | Diameter(mm) | 42/51//76/90/100/110/115/130/150/160/180/200 | | Usage | Rock Drilling | | Bit Material | Tungsten and Manganse Steel | | Transport Package | Carton Box/Plywood Box | | Specification | R25/R32/R38/R51/T30/T40/T53/T76/T103 | | Origin | Ningbo, China | | Production Capacity | 1000000PCS/Year | | Package Size | 42.00cm * 38.00cm * 25.00cm | | Package Gross Weight | 25.000kg | | grouting drill System Consists of | Steel Hollow Bar | | Category | [Assortment Kits & Mixed Fastener Sets](https://engineeringhardware.com/fastener-products/fastener-sets-assemblies/assortment-kits-mixed-fastener-sets/) | ## Technical parameters | Drill Bit Selection | | | | --- | --- | --- | | EX | Description | A machined or cast hardened cross dirll bit. | | Suitable Conditions | A majority of applications for loose to medium dense ground conditions. | | | EXX | Description | The tungsten carbide corss bit. | | Suitable Conditions | Suitable for soft to medium fractured rock formations. | | | ESF | Description | Cast and hardened hemispherical button drill bit. | | Suitable Conditions | Suitable for silt, sand and gravel and soft rock formations. | | | ESD | Description | Drop center hardened button bit. | | Suitable Conditions | For increased drilling efficiency of silt, sand and gravel with small boulders or soft rock. | | | ESSF | Description | Tungsten carbide hemispherical button drill bit. | | Suitable Conditions | With flat drill face for a large range of fractured ground, broken and medium rock formations. | | | EW | Description | Clay drill bit. | | Suitable Conditions | Cohesive mixed soils without obstructions. | | | EC | Description | Hardened tri-cresent/arching drill bit. | | Suitable Conditions | Suitable for unconsolidated soil with small boulders. | | | ECC | Description | Tungsten carbide tri-cresent/arching bit. | | Suitable Conditions | For a range of soft to medium rock formations. | | | EY | Description | Hardened tri-blade drill bit with a drop center buttons. | | Suitable Conditions | Offers an increased cutting performance in fills and chalk. | | | EYY | Description | TC drop center bit with hardened tri-blade bit. | | Suitable Conditions | Suitable for soft to medium cemented ground conditions including fills and chalk. | | | Bit Type | Drill Bit Diameters | | | | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | R25 | R32 | R38 | R51 | T30 | T40 | T52 | T73 | T76 | T103 | | | EX | φ42 φ51 | φ51 φ76 φ90 | φ76 φ90 φ100 | φ90 φ115 | φ42 φ46 φ51 φ76 | φ76 φ90 φ100 φ115 | φ115 | φ130 φ170 | φ130 φ170 | - | | EXX | φ42 φ51 | φ51 φ76 φ90 | φ76 φ90 φ100 | φ90 φ100 φ115 φ130 φ150 | φ42 φ46 φ51 | φ76 φ90 φ100 φ115 φ130 φ150 | φ115 φ130 φ150 | φ130 φ150 φ200 | φ130 φ150 φ200 | φ175 | | ESF | φ42 φ51 | φ51 φ76 | φ76 φ90 φ100 | φ90 φ110 | φ42 φ46 φ51 | φ76 φ90 φ100 φ115 φ130 | - | - | - | - | | ESD | - | - | φ115 | φ115 | - | - | φ115 | φ130 | φ130 φ170 | - | | ESSF | φ42 φ51 | φ51 φ76 φ90 | φ76 φ90 φ100 φ115 | φ90 φ100 φ115 φ130 φ150 | φ46 φ51 | φ70 φ76 φ90 φ100 φ115 φ130 | φ100 φ115 | φ110 φ130 | φ120 φ130 φ150 | φ175 | | EW | - | φ76 φ90 | φ76 φ90 φ100 φ110 φ115 φ130 φ150 | φ130 φ150 φ175 | φ76 φ90 | φ90 φ130 φ150 | φ130 φ150 | φ130 φ150 | φ130 φ150 | φ220 φ280 | | EC | - | φ51 φ76 | φ76 φ90 φ115 | φ115 | φ51 | φ90 φ115 | - | - | - | - | | ECC | - | φ51 φ76 | φ76 φ90 φ110 φ115 | φ115 | φ51 | φ90 φ100 φ115 | - | - | - | - | | EY | - | φ76 φ90 | φ76 φ90 φ130 | φ115 | - | - | - | - | - | - | | EYY | - | φ76 φ90 | φ76 φ90 φ130 | φ115 | - | - | - | - | - | - | ## Description Sinorock Efficient and Safe Underground Excavation Works Self Drilling Threaded Anchor Bolt is part of our assortment kits & mixed fastener sets range (Fastener Sets & Assemblies). ### Key details - **Type:** Whole Set of Anchor System - **Material:** High Strength Alloy Steel - **Application:** Tunnel Boring Machine - **Certification:** ISO9001: 2000, BV Certificated - **Warranty:** Commonly Used About One Year - **Condition:** New - **Diameter(mm):** 42/51//76/90/100/110/115/130/150/160/180/200 - **Usage:** Rock Drilling Available configurations include material, diameter(mm), bit material and package size. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 30 pieces at US$6.60 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 Sinorock Efficient and Safe Underground Excavation Works Self Drilling Threaded Anchor Bolt? The listed minimum order is 30 pieces, at US$6.60 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 Sinorock Efficient and Safe Underground Excavation Works Self Drilling Threaded Anchor Bolt? Type: Whole Set of Anchor System; Material: High Strength Alloy Steel; Application: Tunnel Boring Machine; Certification: ISO9001: 2000, BV Certificated; Warranty: Commonly Used About One Year; Condition: New. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include material, diameter(mm), bit material and package size. 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 assortment kits & mixed fastener sets are available? The Assortment Kits & Mixed Fastener Sets category lists 3,161 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/fastener-sets-assemblies/assortment-kits-mixed-fastener-sets/](https://engineeringhardware.com/fastener-products/fastener-sets-assemblies/assortment-kits-mixed-fastener-sets/) 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 Assortment Kits & Mixed Fastener Sets →](https://engineeringhardware.com/fastener-products/fastener-sets-assemblies/assortment-kits-mixed-fastener-sets/) [![225PCS Rubber O Ring Oil Resistance O-Ring Washer Seals Watertightness Assortment](https://img.engineeringhardware.com/225PCS-Rubber-O-Ring-Oil-Resistance-O-Ring-Washer-Seals-Watertightness-Assortment.webp)](https://engineeringhardware.com/product/225pcs-rubber-o-ring-oil-resistance-o-ring-washer-seals-watertightness-assortment/) Assortment Kits & Mixed Fastener Sets ### [225PCS Rubber O Ring Oil Resistance O-Ring Washer Seals Watertightness Assortment](https://engineeringhardware.com/product/225pcs-rubber-o-ring-oil-resistance-o-ring-washer-seals-watertightness-assortment/) Rubber O-Ring Seal · Rubber **US$1.44 – 1.80**MOQ 100 sets [![Universal Hex Socket Pair Lock Splint Screw and Rivet Stainless Steel 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