Quick Specs

What Buyers Should Know Before Sourcing DIN 7349 Heavy Duty Washers

DIN 7349 washers are selected when a normal flat washer does not offer enough thickness or bearing area. They are commonly used with industrial bolts in equipment frames, slotted holes, painted steel plates, and heavy support connections where surface pressure needs better control.

For export purchasing, the washer itself is only one part of the order. Buyers should also confirm rust protection for sea freight, carton weight, pallet style, label language, inspection documents, and whether washers must be packed with bolts and nuts as assembly sets.

Common Purchasing Descriptions

For combined shipments, buyers can review related fastener products and send one consolidated RFQ for washers, bolts, nuts, and coated parts.

Detailed Specifications Table

Material and Grade Explanation

The washer material should be selected according to the bolt strength, joint surface, and loading condition. Carbon steel is widely used for machinery and general steelwork. Alloy steel or controlled hardness may be requested when the washers are paired with stronger bolts or used in high-load assemblies.

When DIN 7349 washers are exported with high-strength fasteners, the full bolting set should be reviewed together. A washer with poor hardness control or heavy burrs can affect tightening even when the bolt and nut are correct.

Surface Finish Selection Guide

Finish selection should match the service environment and export storage route. Plain or black washers may need oil and moisture-resistant packing. Zinc plated washers offer cleaner appearance for many indoor assemblies. Hot dip galvanized washers are often chosen for outdoor structures, but hole clearance and coating build-up should be checked before shipment.

For projects that require a consistent coating across bolts, nuts, and washers, XZ Fastener can coordinate DIN 7349 supply with related coated fasteners.

Manufacturing and Quality Control

Reliable export supply depends on stable washer production and disciplined sorting. XZ Fastener checks key dimensions, surface condition, and packing accuracy according to order requirement. For repeat orders, keeping the same drawing, finish, carton weight, and label format helps avoid receiving-side confusion.

1. Confirm DIN 7349 size list, drawing, material, finish, and order quantity.
2. Check raw material and hardness requirement before production.
3. Control inside diameter, outside diameter, thickness, flatness, and burr condition.
4. Inspect coating appearance and thickness when plating or galvanizing is required.
5. Pack by size, finish, and lot with export labels and pallet protection.

For non-standard washer dimensions or special packing, buyers can use XZ Fastener’s custom fasteners support before confirming production.

Приложения

DIN 7349 washers can be exported together with other standard fasteners when buyers need a coordinated shipment for production or project installation.

How to Get a Faster Quotation

A clear RFQ helps confirm cost, lead time, and packing quickly. For DIN 7349 heavy duty washers, the most useful details are the washer size list, material, finish, quantity, destination, packing method, and inspection documents.

• Send nominal washer sizes and quantity per size.
• State DIN 7349 or provide a drawing for custom dimensions.
• Confirm material, hardness requirement, and surface finish.
• List carton weight, pallet type, label content, and barcode requirement if any.
• Specify inspection reports, coating checks, and any third-party inspection need.

For export orders, buyers can contact XZ Fastener with the project specification and shipment requirement.

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