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العربية ISO 14581 hexalobular countersunk screws exporter
XZ Fastener supplies ISO 14581 hexalobular countersunk screws for export orders where buyers need flush head seating, six-lobe drive engagement, consistent lot packing, and clear order documentation. These metric countersunk machine screws are used in equipment panels, machinery covers, electrical housings, and assemblies where raised heads are not acceptable. Carbon steel, alloy steel, and stainless steel options can be supplied with plain, zinc plated, black oxide, nickel plated, or passivated finishes according to order requirement. Export cartons, pallet labels, customer part numbers, inspection checks, and mixed-size schedules can be reviewed before shipment.
Quick Specs
What Buyers Should Know Before Sourcing ISO 14581 Hexalobular Countersunk Screws
ISO 14581 screws are different from many general countersunk screws because they combine a flat countersunk head with a hexalobular internal drive. This structure helps the screw sit flush while supporting reliable torque transfer during installation. Before export sourcing, buyers should confirm head angle, countersink compatibility, recess size, thread pitch, length measurement, coating thickness, material grade, and packaging labels.
When a drawing includes multiple metric standards, the DIN and ISO fastener standards guide can help purchasing teams review how standard number, material, grade, finish, and matching parts should be written in the inquiry.
Common Purchasing Descriptions
Typical screw descriptions
- ISO 14581 countersunk screw, hexalobular drive, M3 to M12, carbon steel zinc plated
- ISO 14581 flat head six-lobe machine screws, stainless steel A2, metric coarse thread
- Hexalobular countersunk screws, black oxide, class 8.8, export carton packing
- Metric countersunk socket star drive screws with controlled recess depth and flush head seating
Related export order items
Importers and distributors often source ISO 14581 screws together with standard fasteners for project stock or maintenance kits. Related purchasing terms may include DIN 933 full thread hex bolts, Grade 8.8 carbon steel hex bolts, metric hex head bolts, zinc plated DIN 933 bolts, black oxide DIN 933 bolts, and hot dip galvanized DIN 933 bolts.
Detailed Specifications Table
| Item | Available Options | Buyer Notes |
|---|---|---|
| Product Name | ISO 14581 hexalobular countersunk screws | Use the exact standard and drawing revision when replacing an existing part. |
| Diameter | Common metric sizes such as M3, M4, M5, M6, M8, M10, M12 | Other sizes can be reviewed according to order requirement. |
| Length | Metric lengths according to project drawing or purchasing list | Countersunk screw length is normally measured from the top of the head. |
| Thread | Metric coarse thread; fine thread available upon request | Confirm thread pitch when screws are assembled into tapped holes or inserts. |
| Drive | Hexalobular internal drive | Drive size and tool fit should be confirmed for torque-controlled assembly. |
| Head Form | Countersunk flat head | Confirm countersink angle, seating depth, and flush surface requirement. |
| Material | Carbon steel, alloy steel, stainless steel A2 / A4 | Material should match strength, corrosion exposure, magnetic requirement, and cost target. |
| Surface Finish | Plain, zinc plated, black oxide, nickel plated, passivation, other coatings by request | Coating thickness should not interfere with recess engagement or countersunk seating. |
| Export Packing | Bulk cartons, small boxes, inner bags, labels, pallets | Customer part number, barcode label, and carton mark requirements should be provided before packing. |
| Inspection | Dimension, thread, drive fit, hardness, surface appearance, packing check | Additional inspection documents can be supplied according to order requirement. |
Material and Grade Explanation
Material choice affects strength, corrosion resistance, cost, and assembly behavior. For export orders, buyers should also consider storage time, local climate, pallet handling, and whether the screws will be assembled into steel, aluminum, plastic, or stainless components.
Carbon Steel and Alloy Steel
For many industrial assemblies, carbon steel fasteners offer a practical balance of cost and mechanical performance. Class 4.8 can be used for general assembly, while class 8.8 or alloy steel options may be reviewed for higher strength requirements.
Stainless Steel
Stainless steel A2 is often selected for clean indoor equipment or mildly corrosive environments. Stainless steel A4 can be considered for higher corrosion exposure. If stainless screws are assembled into stainless threads, the buyer may need lubrication or anti-galling practice.
Surface Finish Selection Guide
The finish should be selected according to corrosion exposure, visual requirement, assembly method, and shipment storage conditions. For countersunk screws, finish build-up should be controlled because excessive coating can affect head seating and drive fit.
| Finish | Typical Use | Procurement Comment |
|---|---|---|
| Zinc Plated | General equipment, panels, light industrial assemblies | Common economical option; color and corrosion requirement should be confirmed. |
| Black Oxide | Machinery, instruments, dark appearance assemblies | Often used with oil protection; suitable when the buyer needs a darker surface. |
| Nickel Plated | Clean appearance or decorative hardware applications | Available upon request when a brighter surface is required. |
| Passivated Stainless | Stainless steel screws for clean or corrosion-exposed assemblies | Confirm A2 or A4 material before finish selection. |
| Special Coating | Project-specific corrosion or friction requirement | Review options through coated fasteners when non-standard coating control is needed. |
Manufacturing and Quality Control
For export supply, consistent production and clear packing control are important. XZ Fastener reviews the item list, drawing, or sample requirement before production so the final screws match the buyer’s head seating, drive fit, thread, finish, and packaging needs.
Manufacturing Focus
- Cold forming or machining route selected according to size and order requirement
- Controlled countersunk head diameter, angle, and seating surface
- Hexalobular recess formed for stable drive engagement
- Thread rolling or thread processing based on material and size
- Finish process reviewed to reduce burrs, blocked recesses, and poor seating
Inspection Focus
- Dimensional checks for diameter, length, head form, countersink angle, and thread pitch
- Drive gauge fit and recess depth control
- Hardness or mechanical property review when required
- Surface appearance, coating coverage, and mixed-size prevention
- Carton marks, labels, pallet method, and batch information according to order requirement
Projects requiring drawing-based dimensions, special drive depth, special material, or private packing can be reviewed through XZ Fastener’s custom fasteners support.
Applications
ISO 14581 hexalobular countersunk screws are used where the outer surface should remain flush and the drive needs stable engagement during assembly. They are suitable for both production line use and distributor export stock.
How to Get a Faster Quotation
A complete export inquiry helps confirm price, lead time, packing plan, and shipment preparation faster. If the order includes ISO 14581 screws together with industrial bolts, nuts, washers, or other parts, send the full list so material and finish consistency can be checked together.
- Standard: ISO 14581, or attach the drawing if the countersunk head or recess is modified.
- Size list: diameter, length, thread pitch, and quantity per size.
- Material and grade: carbon steel, alloy steel, stainless steel A2 / A4, class 4.8, class 8.8, or special requirement.
- Finish: plain, zinc plated, black oxide, nickel plated, passivated stainless steel, or special coating.
- Packing: bulk carton, small box, inner bag quantity, customer label, pallet method, and mixed-item restrictions.
- Export details: destination country, destination port, required carton marks, and any inspection documents.
For export quotation support, contact XZ Fastener with your item list and destination information.
FAQ
Can ISO 14581 hexalobular countersunk screws be supplied for export orders?
Yes. Export orders can be reviewed by size, material, grade, finish, packing method, carton label, pallet method, and inspection requirement. Destination information is useful for quotation and shipment planning.
What information is needed before quoting ISO 14581 screws?
Please provide the standard, diameter, length, thread pitch, material, property class, surface finish, quantity, packaging requirement, destination country, and any inspection documents needed. A drawing is recommended when the head or recess is not standard.
How is the length of a countersunk screw measured?
For countersunk screws, length is normally measured from the top of the head to the screw end. Buyers should confirm this with the drawing when replacing an existing part or changing from another screw standard.
Which finishes are commonly selected for export supply?
Zinc plated, black oxide, plain, nickel plated, and passivated stainless steel finishes are common options. The suitable finish depends on material, corrosion exposure, appearance requirement, and storage conditions before assembly.
Can carton labels and customer part numbers be applied?
Yes. Customer labels, item codes, carton marks, bag quantities, and pallet packing can be discussed before production. Buyers should share the required label content before order confirmation.
Can ISO 14581 screws be exported together with other fasteners?
Yes. XZ Fastener can review mixed fastener lists including screws, nuts, washers, bolts, and custom parts. Supplying related items together can help align material, finish, labeling, and shipment packing.
Send Your Export Order Requirement
For ISO 14581 hexalobular countersunk screws, send your size list, finish, quantity, packaging method, inspection requirements, drawing if available, destination country, and delivery terms. XZ Fastener will review the specification and respond with practical supply options according to order requirement.