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The screw has a visibly tapered underside beneath a flat, circular head. This geometry is intended for countersunk seating in a compatible fixture or prepared recess. The required countersink angle and final head position cannot be determined from the image.
The head contains a visible internal six-lobe recess. This type of drive provides multiple contact surfaces for a matching driver bit. The exact drive designation and bit size have not been supplied and should be confirmed before installation tooling is selected.
The thread extends from near the underside of the head toward the tip. This continuous thread arrangement is intended to engage the specified base material along the installed portion of the screw.
The image shows a deep, widely spaced thread profile relative to the core diameter. Exact thread pitch, major diameter, minor diameter and thread geometry cannot be measured from the photograph.
The screw terminates in a visible pointed end. The image does not establish whether the tip is self-drilling, self-tapping or intended only to assist positioning. Installation-hole preparation must follow confirmed technical instructions.
Product characteristic | Confirmed from the supplied information |
|---|---|
Product name | Concrete Screw |
Head style | Countersunk head visible |
Drive | Internal six-lobe recess visible |
Thread coverage | Fully threaded or nearly fully threaded body visible |
Thread profile | Pronounced coarse thread visible |
Tip | Pointed tip visible |
Material | Not provided |
Surface treatment | Not provided; color alone does not identify the coating |
Diameter and length | Not provided |
Drive size | Not provided |
Thread dimensions | Not provided |
Base materials | Concrete is indicated by the product name; other substrates are not confirmed |
Pilot-hole requirement | Not provided |
Installation torque | Not provided |
Mechanical performance | Not provided |
Applicable standard | Not provided |
Approval or certification | Not provided |
The screw combines a low-profile countersunk head with a continuous external thread. When correctly matched to the fixture, prepared hole and approved base material, this structure is intended to create a mechanical threaded connection without a conventional nut.
The countersunk head can support a flush-finish requirement, while the internal six-lobe drive allows torque to be transmitted from the installation tool to the screw. The coarse thread profile is intended to engage the approved base material, but its actual load performance depends on the exact screw geometry, material, heat treatment, coating, embedment, hole preparation and substrate condition.
No load or installation claim should be made from the image alone.
Based only on the product name and visible head configuration, this screw may be considered for concrete-fixing applications where a countersunk head is required. Final suitability must be verified for the exact application.
Possible project categories for technical review include:
fixing compatible brackets to concrete;
installing metal or other approved fixtures with countersunk holes;
mounting frames or profiles to an approved concrete substrate;
securing equipment components where a flush head is preferred;
construction and maintenance fastening tasks defined by an engineering specification.
These examples are not confirmation of suitability for masonry, brick, block, stone, cracked concrete, overhead installation, seismic loading, fire-rated systems or structural anchoring. Each condition requires verified product data and project approval.
The supplied image shows a yellow-iridescent metallic appearance. This visual characteristic is not sufficient to identify the base material or coating process. Similar appearances can result from different materials, plating systems, conversion coatings or photographic conditions.
The following information should be stated in the RFQ or technical data sheet:
base material and material grade;
heat-treatment condition;
surface-treatment process;
coating thickness;
corrosion-resistance requirement;
hydrogen-embrittlement controls, where applicable;
environmental restrictions;
indoor or outdoor service conditions;
compatibility with the fixture and substrate;
required material and coating certificates.
Do not describe the product as carbon steel, stainless steel, zinc plated, yellow zinc plated or otherwise coated unless the supplier documentation confirms it.
The exact installation procedure has not been provided. A safe installation sequence should be established from the confirmed product data and may require the following project-specific steps:
Verify the screw diameter, length, drive size and approved base material.
Confirm whether a pilot hole is required.
If drilling is specified, use the approved drill diameter, drilling depth and drilling method.
Clean the hole using the procedure stated in the technical instructions.
Align the fixture and ensure its countersunk hole matches the screw head geometry.
Use the confirmed driver-bit size.
Install the screw to the specified embedment depth and torque.
Stop when the head is correctly seated; do not overdrive the screw.
Inspect the fixture, head seating and surrounding substrate.
Follow any project-specific spacing, edge-distance and inspection requirements.
Because the image does not confirm whether the screw is self-drilling or whether pre-drilling is mandatory, neither installation method should be claimed without technical documentation.
Parameter | Required confirmation |
|---|---|
Approved base material | Concrete type and condition |
Drill requirement | Whether pre-drilling is required |
Drill-bit diameter | Product-specific value |
Hole depth | Product-specific value |
Hole-cleaning method | Product-specific procedure |
Minimum embedment | Product-specific value |
Fixture thickness | Permitted range |
Edge distance | Verified minimum value |
Anchor spacing | Verified minimum value |
Installation torque | Verified value or range |
Driver bit | Exact type and size |
Reuse | Whether removal and reinstallation are permitted |
Before this product is approved for commercial or engineering use, buyers should request the applicable performance data, which may include:
characteristic or allowable tension resistance;
characteristic or allowable shear resistance;
test substrate and concrete strength;
cracked or non-cracked concrete classification;
minimum embedment depth;
spacing and edge-distance requirements;
installation torque;
pull-out and shear test method;
corrosion classification;
temperature limitations;
fire or seismic performance, if required;
applicable approval, assessment or standard;
test reports and lot traceability.
None of these properties can be derived reliably from the supplied image.
For an accurate quotation, provide:
product name: Concrete Screw;
required diameter and overall length;
fixture thickness;
head diameter and countersink geometry;
internal drive designation and size;
thread dimensions or approved drawing;
base material and concrete condition;
required embedment depth;
material grade;
surface treatment and corrosion requirement;
mechanical load requirement;
applicable standard or approval;
quantity;
inspection and certificate requirements;
packaging and labeling requirements;
destination market and delivery terms.
Where required by the purchase contract, inspection may cover:
overall length and nominal diameter;
head diameter and head height;
countersunk-head geometry;
drive-recess dimensions;
thread profile, pitch and continuity;
tip geometry;
material verification;
hardness or heat-treatment condition;
surface-treatment thickness;
corrosion testing;
visual inspection for cracks, burrs and thread damage;
mechanical testing under an agreed method;
packaging, marking and batch traceability.
Test methods, limits and sampling plans must be agreed before production.
Do not identify the coating solely from the yellow surface appearance.
Do not assume the screw can be installed without a pilot hole.
Do not use an unverified driver-bit size.
Do not publish unsupported load values.
Do not assume approval for cracked concrete, seismic, fire-rated or overhead use.
Do not substitute the screw for a certified structural anchor without supporting technical evidence.
Do not install into an unapproved substrate.
Do not reuse the screw unless the technical specification permits reuse.
Do not exceed the verified installation torque or embedment range.
The product has a countersunk head and an internal six-lobe drive recess. The exact drive size is not provided.
The material cannot be confirmed from the image. A material grade must be supplied through the drawing, quotation or certificate.
That cannot be confirmed visually. The exact coating process and corrosion performance must be documented.
The installation requirement has not been provided. Follow the verified technical instructions for the exact product.
Only concrete is indicated by the supplied product name. Suitability for brick, block, stone or other substrates requires separate confirmation.
No standard or approval has been supplied. Do not assign a DIN, ISO, EN, ASTM or other designation based on appearance.
No tension, shear or pull-out data has been provided. Load performance must be confirmed for the exact screw, embedment and substrate.
Provide the dimensional drawing or required size, base material, fixture thickness, installation conditions, material, finish, required loads, applicable standard, quantity and documentation requirements for technical review and quotation.
