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العربية ISO 14581 hexalobular countersunk screws factory
XZ Fastener supplies ISO 14581 hexalobular countersunk screws for buyers who need flush head seating, controlled drive engagement, and stable repeat production from a factory source. These metric machine screws use a six-lobe internal drive and a countersunk head, making them suitable for panels, covers, equipment housings, and assemblies where the screw head should sit level with the surface. 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. Share drawings, size lists, quantities, packing details, and inspection needs for quotation review.
Quick Specs
What Buyers Should Know Before Sourcing ISO 14581 Hexalobular Countersunk Screws
ISO 14581 screws combine a countersunk head with a hexalobular internal drive. The head is designed to sit flush after assembly, while the six-lobe recess helps transmit torque more steadily than many conventional recessed drive forms. Before sourcing, buyers should confirm head angle, countersink compatibility, recess size, thread pitch, length measured from the top of the head, material grade, and coating thickness.
For drawings that reference more than one metric standard, the DIN and ISO fastener standards guide can help buyers review standard naming, substitution limits, and the additional details needed for a complete purchasing specification.
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, factory carton packing
- Metric countersunk socket star drive screws with controlled recess depth and clean head seating
Related line items in one order
Many buyers source countersunk screws together with standard fasteners for machinery or equipment projects. A combined purchasing list 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 size in the RFQ to avoid confusion with ISO 10642 or other countersunk socket screws. |
| 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 parts or inserts. |
| Drive | Hexalobular internal drive | Drive size and tool fit should be confirmed for torque-controlled or automated assembly. |
| Head Form | Countersunk flat head | Confirm countersink angle, seating depth, and surface flushness requirement. |
| Material | Carbon steel, alloy steel, stainless steel A2 / A4 | Material choice depends on 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 be considered when countersunk seating and recess fit are critical. |
| Packing | Bulk cartons, small boxes, bags, labels, pallets | Customer part numbers, barcode labels, and mixed-size packing can be discussed before production. |
| Inspection | Dimension, thread, drive fit, hardness, surface appearance, packing check | Additional inspection documents can be supplied according to order requirement. |
Material and Grade Explanation
The right material depends on assembly strength, corrosion exposure, appearance, and the mating component. Carbon steel is widely used for equipment and enclosure assembly. Alloy steel can be selected when higher strength is required. Stainless steel A2 and A4 are practical options for clean appearance or corrosion resistance.
Carbon Steel and Alloy Steel
For cost-sensitive industrial projects, carbon steel fasteners can be supplied in common strength classes with zinc plated, black oxide, or other finishes. Buyers should confirm whether the assembly needs general machine screw strength or a stronger class such as 8.8.
Stainless Steel
Stainless steel A2 is often used for clean indoor equipment, while A4 can be considered for higher corrosion exposure. For stainless-to-stainless assembly, anti-galling practice or suitable lubricant may be required by the application.
Surface Finish Selection Guide
Countersunk screws need careful finish selection because coating build-up can affect head seating, recess engagement, and thread fit. XZ Fastener can review finish, material, and inspection requirements together before production.
| 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 visual finish. |
| 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 the project requires special coating control. |
Manufacturing and Quality Control
For a countersunk screw factory order, production control should focus on head geometry, recess quality, thread accuracy, and finish consistency. A screw that meets the correct diameter and length can still cause assembly problems if the head does not seat cleanly or the drive recess is shallow, blocked, or damaged.
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 tool 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 a flush outer surface and reliable drive engagement are required. They are common in equipment manufacturing, enclosure assembly, and mechanical products where raised screw heads are not acceptable.
How to Get a Faster Quotation
A complete RFQ helps confirm production route, price, and delivery details faster. If the order includes ISO 14581 screws together with other industrial bolts, nuts, or washers, 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, bag quantity, customer label, pallet method, and mixed-item restrictions.
- Inspection: dimensional report, hardness check, coating requirement, drawing confirmation, or other documents.
For a direct factory quotation, contact XZ Fastener with your item list and destination port or delivery address.
FAQ
Can ISO 14581 hexalobular countersunk screws be supplied from factory production?
Yes. Factory production can be reviewed by size, material, grade, finish, packing method, and inspection requirement. Forecast quantity or repeat order planning is helpful for stable supply.
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, 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 materials are commonly used for ISO 14581 countersunk screws?
Common options include carbon steel, alloy steel, stainless steel A2, and stainless steel A4. The final selection should match strength, corrosion exposure, appearance, and the mating component.
Can the screws be packed with customer labels or part numbers?
Custom labels, item codes, carton marks, bag quantities, and pallet packing can be discussed before production. Buyers should share label artwork or label content before order confirmation.
Can ISO 14581 screws be supplied 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 Factory Order Requirement
For ISO 14581 hexalobular countersunk screws, send your size list, finish, quantity, packaging method, inspection requirements, drawing if available, and delivery destination. XZ Fastener will review the specification and respond with practical supply options according to order requirement.