Quick Specs

What Buyers Should Know Before Sourcing DIN 444 Eye Bolts

DIN 444 eye bolts are often used in linkage and adjustment assemblies. They are not just standard threaded fasteners with a loop. The eye inner diameter, eye thickness, shank length, thread length, and transition area can affect movement, alignment, and assembly fit.

Wholesale buyers should also separate DIN 444 eye bolts from lifting eye bolts such as DIN 580. DIN 444 is commonly used for hinges, tensioning points, and clamping connections. If the application involves lifting, suspension, or safety-critical loading, the required load rating, proof test, inspection method, and engineering approval must be specified separately.

For related sourcing categories, buyers can review other industrial bolts and standard fasteners.

Common Purchasing Descriptions

A clear purchasing description helps the supplier confirm production route, inspection scope, packing, and lead time. Common RFQ wording includes:

• DIN 444 eye bolt, M8 x 60, Class 4.8, zinc plated, eye inner diameter confirmed by drawing.
• DIN 444 eye bolt, M10 x 80, Class 8.8 carbon steel, black oxide, supplied with nut.
• DIN 444 eye bolt, M12 x 100, stainless steel A2-70, passivated finish, small box packing.
• DIN 444 metric eye bolts, mixed sizes, hot dip galvanized, barcode label and dimensional report required.

For wider purchasing programs, buyers can review XZ Fastener’s fastener products and request related custom fasteners when the eye geometry or shank length differs from standard parts.

Detailed Specifications Table

Manufacturing and Quality Control

Wholesale supply of DIN 444 eye bolts requires repeatable control over forming, eye geometry, shank straightness, thread rolling, heat treatment where required, surface finishing, and final packing. The eye area should be checked for cracks, heavy folds, sharp burrs, poor transition surfaces, and dimensional inconsistency.

Wholesale Quality Control Points

1. Review DIN 444 form, size list, drawing notes, material, grade, finish, and packing requirement.
2. Confirm raw material grade and heat number traceability when required.
3. Inspect eye inner diameter, eye outer diameter, eye thickness, shank length, and shank straightness.
4. Verify thread pitch, thread length, go/no-go gauge fit, and burr condition.
5. Apply heat treatment according to specified property class where applicable.
6. Check coating appearance, coverage, thread function, and eye clearance after surface treatment.
7. Pack by item code, size, grade, finish, and batch number for warehouse receiving control.

For non-standard eye dimensions or drawing-based parts, XZ Fastener can review requirements through its customized service. Buyers comparing DIN references can also use the DIN and ISO fastener standards guide.

Приложения

DIN 444 eye bolts are used where a threaded shank must connect with a pin, hook, linkage, bracket, or adjustable clamping point. Common applications include:

• Machinery hinges and pivoting connections.
• Clamping fixtures, jigs, and adjustable tooling.
• Tensioning systems for guards, panels, and light frames.
• Construction hardware, brackets, and industrial equipment assemblies.
• Wholesale distributor stock for metric eye bolts in different sizes and finishes.

How to Get a Faster Quotation

Wholesale quotation is faster when the RFQ includes dimensional, packing, and document requirements at the beginning. For DIN 444 eye bolts, the eye dimension is as important as the thread size.

For wholesale order review, buyers can contact XZ Fastener with drawings, samples, photos, or a detailed purchasing sheet.

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