304 Stainless Steel Cross Countersunk Internal Expansion Anchors Hidden Flush Sleeve Wall Bolts

Name: Countersunk Cross Recessed Sleeve Anchor
Material: AISI 304 Stainless Steel, Q235 Carbon Steel
Standards: ETAG 001, GB/T 22795
Grade:Stainless Steel: A2-70, Carbon Steel: Grade 4.8 / Grade 8.8
Specifications: M6, M8, M10, M12 (Length 30mm - 100mm) Customizable
Surface Treatment: Stainless Steel: Mirror polished and passivated, acid and alkali resistant, moisture-proof and rust-proof; Carbon Steel: Yellow zinc plating, enhancing outdoor rust resistance
Design Features: Flat and countersunk head design, does not protrude from the surface; cross-groove drive, high compatibility; top ring-shaped anti-slip knurled texture; uniform internal expansion of side seams; all stainless steel material, weather-resistant and corrosion-resistant
Applications: Furniture and bathroom hardware installation; appliance and baseboard fixing; door and window subframes and auxiliary fixing; indoor light and medium load-bearing hanging parts; advertising signage and signboard installation
Delivery Time: 15-30 days after receiving advance payment
Origin: China
Brand: JGD
Minimum Order Quantity: 10,000 pieces, negotiable
Samples: Available
Packaging: Boxed/Bulk/Pallet or customized packaging
OEM: Available

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Key Features

Our countersunk cross recessed internal expansion anchor (flush head pull‑in bolt) is made of AISI 304 stainless steel (A2-70) or Q235 carbon steel (Grade 4.8/8.8). The flat countersunk head sits flush with the workpiece surface after installation – no protrusions, aesthetically pleasing and safe. The cross recess drive is compatible with standard screwdrivers for easy installation. The top annular anti‑slip knurling prevents cam‑out during tightening; the even side‑slit expansion ensures uniform expansion force distribution along the sleeve for reliable anchorage. Sizes M6‑M12, lengths 30‑100mm custom. Suitable for furniture/bathroom hardware, appliance baseboards, window/door frames, signage, and indoor light‑medium load hanging. Installation: drill → clean hole → insert anchor → tighten with a cross screwdriver – head sinks flush.

Precision Manufacturing Process

We use a cold heading + precision slotting + thread rolling composite process. The sleeve is cold headed to form the countersunk head, cross recess, and top anti‑slip knurling in one stroke. Expansion slots are machined by high‑precision slotting dies – clean, burr‑free edges. Threads are high‑speed rolled (6g accuracy). 304 stainless steel parts undergo solution treatment + mirror polish + passivation – dense film resists acid/alkali. Carbon steel parts undergo mesh belt furnace quenching + tempering (Grade 8.8: HRC 22-32), followed by yellow zinc plating (72h salt spray). Each batch is sampled for expansion performance (ETAG 001 Annex B), cross recess torsional strength (no head breakage/cam‑out), and salt spray testing (stainless ≥1000h).

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Transparency & Customization

Each carton of anchors comes with a full inspection report (material spectroscopy, hardness, expansion force, salt spray duration). The package QR code traces back to the cold heading machine, slotting die number, and polishing line. Our website shows installation videos and failure cases (e.g., countersunk fracture, insufficient expansion).

Customization options: Accept non‑standard length, sleeve diameter, countersunk angle (90°/100°/120°), and cross recess size (PH1/PH2/PH3). Material can be 316 stainless steel or carbon steel + Dacromet. Surface treatment offers black electro‑coating (decorative) or brushed satin (industrial). Head can be changed to large pan head (increased bearing area). Mixed standards (ETAG/GB/DIN) supported. Matching cross drill bits and depth‑stop fixtures (countersink depth control) available. Minimum order quantity: 5,000 pieces; sample lead time 7 days. Upload a drawing for a 24‑hour DFM analysis and quotation.

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Countersunk Flat Head · Cross Drive · Internal Expansion

304 stainless steel countersunk cross recessed sleeve anchor, A2-70. Flat head sits flush with workpiece surface after installation – neat and safe. Phillips drive fits standard screwdrivers; top anti-slip knurling prevents slipping; even internal expansion provides reliable anchorage. For furniture, bathroom hardware, appliance baseboards, window frames, signage. Sizes M6-M12, length customizable.

product details

JGD Service

Manufacturing Process

• Multi Station Cold Heading Technology

• Intelligent Heat Treatment System

• Micron-Level Thread Rolling Process

• Fully Automatic Optical Sorting

• Environmentally Friendly Surface Treatment Line

• Metallographic And Mechanical Joint Laboratory

Quality Control System

• Raw Material Source Locking

• Furnace Number Batch Full Traceability

• Third Party Material Certification

• Process Parameters Open And Transparent

• Salt Spray Test Real Time Monitoring

• International Standard Compliance Declaration

Flexible Customization Capability

• Customizable head/slot Shapes

• Extreme Application Of Special Materials

• Breakthroughs In Extra Large/Long Specifications

• Integrated Assembly Of Components

• Customizable Surface Treatment Colors

• Personalized Packaging And Labeling

Technical Service

• On-Site Failure Analysis

• Selection Calculation And BOM Optimization

• Installation Tool Selection Guidance

• Inventory Management (VMI) Trusteeship

• Free Sample Making And Testing

• International Standard Translation And Interpretation

304 Stainless Steel – Aesthetic & Corrosion-Resistant

Made of AISI 304 stainless steel (A2-70), mirror-polished and passivated for a bright, smooth surface with a dense chromium oxide protective layer – resisting moisture, acids, alkalis, and daily cleaning agents. The countersunk flat-head design allows the head to fully embed into the workpiece surface, sitting flush with furniture, bathroom hardware, or window frames – eliminating rust risks while delivering a refined, concealed installation finish, ideal for interior applications with high aesthetic demands.

Anti-Slip Knurling + Uniform Internal Expansion

The top annular anti-slip knurling provides extra friction during Phillips screwdriver tightening, preventing cam-out and ensuring accurate torque transmission. The uniform internal expansion structure – as the screw is driven in, the sleeve expands evenly along longitudinal slots, gripping the hole wall 360° with balanced stress distribution, avoiding localized over-expansion that could crack the substrate. Combined with high tensile strength (A2-70 ≥700MPa), it delivers excellent anti-loosening performance in furniture brackets and sign fixings.

Concealed Countersunk Installation – Wear-Resistant & Long-Lasting

The flat countersunk head not only looks clean but also prevents protrusion that could lead to impact wear. The 304 stainless steel substrate offers high hardness, and the mirror-polished surface is smooth and wear-resistant – resisting galling or scratching during repeated assembly/disassembly. Proven in durability tests, this anchor performs reliably in indoor window auxiliary fixing, appliance baseboards, or sign installations – withstanding daily cleaning, humidity changes, and mild vibration without loosening or rusting. Extremely long replacement cycles – one installation, years of peace of mind.

Factory Environment

High-Quality Stainless Steel Self-Tapping Screw Display

Precision Fastening, Engineered for the Future – Sichuan Jingguda Fasteners Co., Ltd., Your Trusted High-Quality Fastener Expert

Sichuan Jingguda Fasteners Co., Ltd. is a professional fastener manufacturer integrating R&D, production, and sales. We specialize in high-precision, high-strength bolts, nuts, washers, and non-standard customized fasteners, covering international standards such as GB, DIN, ISO, ANSI, and ASME. Equipped with multi-station cold heading machines, high-speed thread rolling machines, fully automated heat treatment lines, and surface treatment equipment, we also operate an in-house laboratory featuring spectrometers, hardness testers, tensile testing machines, and salt spray testers to ensure strict quality control from raw materials to finished products. Our products are widely used in industrial machinery, renewable energy, automotive manufacturing, rail transportation, and more, known for their precision, corrosion resistance, and durability. Committed to “Fast Delivery, Professional Support,” we provide one-on-one customized solutions and efficient logistics, striving to be your ideal partner for reliable connections.

Industrial Capabilities

• Factory Area: 8,000 square meters

• Certifications: ISO, IATF, CE, RoHS, JIS, ASTM

• Manufacturing : 70+ internationally advanced production lines

• Testing: 30+ sets of precision quality testing equipment

• Annual Output: Up to 50,000,000 tons

From Raw Material to Finished Product

Closed-loop manufacturing from raw material to final product is made possible by our factory's fully automated production lines for cold heading, precision thread rolling, controlled-atmosphere heat treatment, and eco-friendly surface finishing. Each fastener satisfies strict requirements for strength, precision, and surface quality thanks to inline optical sorting and a digital MES. Efficient, stable, and green—your guarantee of premium fasteners.

Innovation Lab:

Expertise and collaboration drive us forward, constantly pursuing innovative solutions. Have a project? Let's get started.

Full-Process Collaborative R&D: From "Pain Point Diagnosis" to "Customized Implementation"

We offer more than just ordinary parts. Our diverse engineering team actively participates in your project from the outset. In order to ensure that creative ideas are swiftly turned into workable solutions that lower overall lifecycle costs, we precisely diagnose the application scenario and tailor solutions right in the lab, seamlessly linking technology and application.

Integrated Verification System: Guaranteeing Innovation with "Test Data"

Innovation is not limited to the drawing board. We offer one-stop verification from prototype development to corrosion testing by utilizing our internal technical center. We employ empirical data to verify the performance stability of tailored solutions through rigorous simulated working condition tests. This accomplishes genuinely dependable cost reduction and efficiency enhancement in addition to drastically lowering project dangers.

Rapid Service Response

Using self-developed molds and flexible production lines to finish sampling and dispatch within 7 days; after confirmation, intelligently schedule production using digital quality control and agile supply chains to reduce bulk order delivery time by 30%. This process begins with precisely capturing customer needs and delivering customized solutions within 24 hours. Our "Demand-Solution-Sampling-Production" closed-loop service helps you take advantage of market opportunities for both standard bolts and custom-shaped parts.