--- title: "Underground Mining Roof Support Expansion Shell Anchor Bolt" description: "Underground Mining Roof Support Expansion Shell Anchor Bolt — Foundation & Anchor Bolts. Material: Ductile Iron, Steel, Size: as Per Drawing. MOQ 100 pieces." url: https://engineeringhardware.com/product/underground-mining-roof-support-expansion-shell-anchor-bolt/ source: Engineering Hardware & Fasteners --- # Underground Mining Roof Support Expansion Shell Anchor Bolt [![Underground Mining Roof Support Expansion Shell Anchor Bolt](https://img.engineeringhardware.com/Underground-Mining-Roof-Support-Expansion-Shell-Anchor-Bolt.webp)](https://img.engineeringhardware.com/Underground-Mining-Roof-Support-Expansion-Shell-Anchor-Bolt.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/underground-mining-roof-support-expansion-shell-anchor-bolt.md) Model no. **SP6835** Price on request MOQ 100 pieces · Final price confirmed in your quote - **Standard:** AISI, ASME, BS, ANSI, JIS, GB, ASTM, DIN - **Surface Treatment:** Sand Blast - **Material:** Ductile Iron, Steel - **Size:** as Per Drawing - **Diameter:** 35-38 - **Finish:** Oil Rusty Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Underground%20Mining%20Roof%20Support%20Expansion%20Shell%20Anchor%20Bolt%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Funderground-mining-roof-support-expansion-shell-anchor-bolt%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. | SP6835 | | --- | --- | | Certification | CE, RoHS, ISO 9001:2000, ISO 9001:2008 | | Standard | AISI, ASME, BS, ANSI, JIS, GB, ASTM, DIN | | Surface Treatment | Sand Blast | | Manufacturing Process | Casting+Forging+Stamping+CNC Machining+Welding | | Material | Ductile Iron, Steel | | Item Name | Expansion Shell Anchor Bolt | | Application | Mining Industry | | Size | as Per Drawing | | Diameter | 35-38 | | Finish | Oil Rusty | | QC | 100% | | Transport Package | Wooden Case | | Specification | Customized | | Origin | China | | HS Code | 8486909000 | | Production Capacity | 80, 000 PCS Monthly | | Customization | Available | | After-sales Service | 12 Months | | Warranty | 12 Months | | Product Name | Expansion Shell Anchors Bolt | | Process | Forging for Expansion Shell, casting for Rock anchor bolts | | Category | [Foundation & Anchor Bolts](https://engineeringhardware.com/fastener-products/anchors-construction-fixings/foundation-anchor-bolts/) | ## Technical parameters | Product Name: Expansion Shell Anchors Bolt | | --- | | Material: carbon steel for Expansion Shell, cast iron for Rock anchor bolts | | Finish: Oil Rusty | | Process: Forging for Expansion Shell, casting for Rock anchor bolts | | Application: Rock anchor used in sound rock or concrete allows one-sided forming of walls | ## Description Underground Mining Roof Support Expansion Shell Anchor Bolt is part of our foundation & anchor bolts range (Anchors & Construction Fixings). ### Key details - **Standard:** AISI, ASME, BS, ANSI, JIS, GB, ASTM, DIN - **Material:** Ductile Iron, Steel - **Size:** as Per Drawing - **Diameter:** 35-38 - **Surface Treatment:** Sand Blast - **Finish:** Oil Rusty - **Application:** Mining Industry - **Certification:** CE, RoHS, ISO 9001:2000, ISO 9001:2008 Available configurations include standard, surface treatment, material, size and diameter. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 100 pieces. 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 Underground Mining Roof Support Expansion Shell Anchor Bolt? The listed minimum order is 100 pieces. 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 Underground Mining Roof Support Expansion Shell Anchor Bolt? Standard: AISI, ASME, BS, ANSI, JIS, GB, ASTM, DIN; Material: Ductile Iron, Steel; Size: as Per Drawing; Diameter: 35-38; Surface Treatment: Sand Blast; Finish: Oil Rusty. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include standard, surface treatment, material, size and 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/) [![Building Hardware Precast Embedded Lifting Component, Double-Round-Head Lifting Anchor Bolt, with Reliable Tensile Performance for Construction Engineering Appl](https://img.engineeringhardware.com/Building-Hardware-Precast-Embedded-Lifting-Component-Double-Round-Head-Lifting-Anchor-Bolt-with-Reliable-Tensile-Performance-for-Construction-Engineering-Appl.webp)](https://engineeringhardware.com/product/building-hardware-precast-embedded-lifting-component-double-round-head-lifting/) Foundation & Anchor Bolts ### [Building Hardware Precast Embedded Lifting Component, Double-Round-Head Lifting Anchor Bolt, with Reliable Tensile Performance for Construction Engineering 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