Carbon Steel Window Frame Anchors | Countersunk Phillips Head Sleeve Anchors

Product Highlights

• Flush Countersunk Profile: Designed with a flat, countersunk head that sits perfectly flush with the metal or vinyl surface of window and door frames, ensuring a smooth, seamless finish.
• Vibration-Resistant Fixing: Equipped with an expanding metal sleeve and a tapered bottom cone that lock securely into concrete, solid brick, or stone walls, preventing framework warping or loosening.
• Bright Zinc Protection: Coated with an un-filmed, high-quality bright zinc finish to protect carbon steel components against air humidity and moisture during tropical building installations.
• Pre-Assembled Efficiency: Provided as a completely integrated hardware kit—including the screw, expansion sleeve, and cone—allowing installers to drive the anchor directly through pre-drilled holes.
• High Shear Loading: Built from high-grade carbon steel to handle consistent wind pressure and weight loads common to commercial and residential structural openings.

Product Specifications

📦 Packing & Logistics Data

• Standard Bulk Packaging: 25 kg packed securely in 5-layer corrugated master cartons, stacked and double-banded on standard non-fumigation export pallets (approx. 1 to 1.2 metric tons per pallet).
• Anti-Humidity Sea Liner: Every carton includes an inner waterproof plastic seal bag to thoroughly protect bare metal thread clearances from oceanic humidity during transit across Southeast Asian shipping lines.
• Flexible Inner Boxes: Supports low-count box configurations (e.g., 100, 200, or 500 pcs per box) labeled with custom warehouse barcodes, part specifications, and your private logo prints.
• FCL Capacity Maximization: Yields 20 to 25 metric tons per 20ft container (20GP), precisely optimized to pass legal clearance weight restrictions across major destination sea terminals.

Manufacturing Standards & Dimension Correspondence

We adhere strictly to micrometric engineering parameters to guarantee exact alignment with masonry drilling machinery:

• Drilling Hole Match: M8 series anchors require an exact 8mm drilling hole; M10 series anchors require an exact 10mm masonry hole.
• Total Length Clearance: Precise total length boundaries include 82mm total length for 72mm sleeves, 100mm for 92mm sleeves, 120mm for 112mm sleeves, and 142mm for 132mm sleeves.
• Drive Alignment: Deeply stamped Phillips drive slots eliminate tool slippage, tool stripping, or spinning problems during automated screw-driving installations.

Application Scenarios

Engineered specifically for the installation of aluminum alloys, uPVC plastic window assemblies, metal door frames, fire doors, and exterior structural cladding brackets. It provides long-lasting, unyielding anchoring depth into concrete backings, solid brick structures, stone building components, and block masonry throughout residential and industrial building zones.

Why Choose Us?

• Direct Handan Industrial Base Supply: Located in the primary manufacturing core of Handan, Hebei, delivering maximum factory wholesale price advantages with zero middle trading markups.
• Automated Cold-Forging Accuracy: Manufactured through automated cold-heading and precision thread-rolling facilities, ensuring clean thread paths and flawless sleeve tolerances.
• 100% Structural Inspection: Our quality tracking program conducts routine batch tensile proof loading, micrometer dimension checks, and metal hardness charting before inventory clearance.
• Rapid OEM Blueprint Turnaround: Fast design adjustments on customized non-standard sleeve lengths, specialized head dimensions, or distinct zinc finishes tailored to local assembly demands.

Commercial & Sourcing Terms

• MOQ (Minimum Order Quantity): 500 pieces for standard sizes actively maintained in stock. Custom lengths or private brand requests utilize a baseline MOQ of 2,000 pieces per size.
• Tiered Wholesale Matrix: Factory-direct wholesale discounts scaled to purchase quantities (500–999 pcs / 1,000–1,999 pcs / ≥ 2,000 pcs).
• Production Lead Times: 7–10 days for active stock configurations; up to 30 days for customized mass manufacturing runs.
• Accepted Payment Protocols: T/T (Telegraphic Transfer), Irrevocable L/C at sight, or PayPal for first-stage evaluation sample batches.

Frequently Asked Questions

Q1: Why is a countersunk head essential for window frame installations?

A: A countersunk (flat) head is crucial because it allows the expansion screw to sit completely flush with the interior groove of the frame profile. This ensures there are no protruding screw heads that could block the smooth movement of window sashes, weatherstripping tracks, or sliding door hardware panels.

Q2: How does a window frame sleeve anchor differ from a standard expansion bolt?

A: Standard expansion bolts utilize bulky hex nuts and protruding bolt shoulders that stick out from the wall. Window anchors feature a sleek countersunk head and a continuous tubular sleeve design that pulls the window profile tight against the masonry masonry without causing frame deformation or distorting the vinyl/aluminum structure.

Q3: Can these window anchors be used safely in hollow concrete blocks?

A: These sleeve anchors perform optimally in solid concrete, dense stone, or solid brickwork where the sleeve can expand uniformly. For lightweight hollow blocks or thin-walled masonry, mechanical expansion force may have lower retention; we recommend testing pull-out loads on-site or utilizing specialized chemical anchors for hollow cavities.

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We support full product customization, sample testing, and flexible batch orders with strict quality assurance and on-time delivery.

Contact us now to get a free tailored quote and professional technical support!

• Factory Name: Hotop Fasteners
• Address: Handan, Hebei, China
• Phone Support:+86 15632029222
• Email Support: [email protected]