Quick Specs

What Buyers Should Know Before Sourcing DIN 7349 Heavy Duty Washers

DIN 7349 washers are often purchased when a joint needs a thicker washer body and stronger bearing support than a general flat washer. They are used with industrial bolts in machinery frames, slotted holes, painted plates, heavy brackets, and equipment bases.

For wholesale purchasing, consistency is the main concern. A distributor may reorder the same washer many times, so carton labels, finish appearance, thickness tolerance, and packing weight should remain stable. If washers are sold together with bolts and nuts, the inside diameter and coating condition must be checked against the mating parts.

Common Purchasing Descriptions

For broader stock planning, buyers can review related fastener products and request washers, bolts, nuts, and coated items in one quotation package.

Detailed Specifications Table

Material and Grade Explanation

DIN 7349 washer material should be selected according to bolt strength, joint surface, and load condition. Carbon steel is commonly used for machinery and general steelwork. Alloy steel or controlled hardness may be requested when the washer is paired with stronger fasteners or used in higher-load assemblies.

When washers are stocked with high-strength fasteners, the washer should not be treated as a minor accessory. Poor flatness, heavy burrs, or inconsistent hardness can affect assembly quality even when the bolt and nut are correct.

Surface Finish Selection Guide

Finish selection should match the customer base and storage environment. Plain or black washers may need oil and moisture-resistant packaging. Zinc plated washers are useful for clean appearance and moderate corrosion protection. Hot dip galvanized washers are selected for outdoor steelwork, but coating build-up around the hole should be checked.

For buyers managing several finishes in stock, XZ Fastener can coordinate DIN 7349 supply with related coated fasteners to keep specifications consistent.

Manufacturing and Quality Control

Wholesale washer supply depends on repeatable production and disciplined packing. XZ Fastener checks key dimensions, surface condition, and packing accuracy according to order requirement. For repeat buyers, keeping the same drawing, finish, carton weight, and label format helps avoid receiving and warehouse issues.

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 clear carton and pallet labels.

For private-label packing, kit supply, or non-standard dimensions, buyers can use XZ Fastener’s custom fasteners support before confirming the production order.

Приложения

DIN 7349 washers can be supplied together with other standard fasteners for buyers who want coordinated stock replenishment.

How to Get a Faster Quotation

A clear wholesale RFQ helps confirm pricing, packing, and lead time quickly. For DIN 7349 heavy duty washers, the most useful details are the washer size list, material, finish, quantity, carton requirement, pallet rule, 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 bag count, carton weight, pallet type, label content, and barcode requirement.
• Specify inspection reports, coating checks, and any third-party inspection need.

For wholesale supply planning, buyers can contact XZ Fastener with the stock list and packaging requirement.

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