Tiếng Việt 
English 
Español 
Русский 
العربية ISO 7089 flat washers supplier
XZ Fastener supplies ISO 7089 flat washers for machinery, steel structure, equipment assembly, construction hardware, and industrial maintenance programs. These metric plain washers help distribute clamp load under bolt heads or nuts, protect contact surfaces, and support stable fastening with metric hex head bolts. Carbon steel, stainless steel, brass, and alloy steel can be supplied according to order requirement, with hardness options such as 140 HV, 200 HV, and 300 HV available upon request. Buyers often source ISO 7089 washers together with DIN 933 full thread hex bolts, ISO 4032 nuts, and spring lock washers.
Quick Specs
What Buyers Should Know Before Sourcing ISO 7089 Flat Washers
ISO 7089 flat washers are plain metric washers used to spread load, cover clearance holes, and reduce surface damage during tightening. Although washers are simple parts, buyers should confirm inner diameter, outer diameter, thickness, hardness, material, finish, burr control, and whether the drawing allows DIN 125 or another equivalent description.
A flat washer does not provide locking by itself. It should be selected together with the bolt, nut, and tightening method. For buyers preparing complete assembly lists, the XZ Fastener bolt, nut, and washer size matching guide helps reduce size mismatch before order confirmation.
Important Sourcing Checks
- Confirm ISO 7089, nominal size, inner diameter, outer diameter, and thickness.
- Specify washer hardness such as 140 HV, 200 HV, or 300 HV.
- Match washer size with bolt diameter, hole size, nut face, and bearing surface.
- Check coating thickness when washers are used with galvanized or coated bolts.
- Confirm carton weight, small box packing, palletizing, and label requirements.
Common Purchasing Descriptions
- ISO 7089 flat washers, carbon steel, zinc plated, M6 to M30
- ISO 7089 plain washers, 200 HV, black oxide finish
- ISO 7089 stainless steel flat washers, A2 or A4, plain finish
- Metric flat washers for Grade 8.8 carbon steel hex bolts and nuts
- ISO 7089 washers matched with zinc plated DIN 933 bolts
- Flat washers for black oxide DIN 933 bolts and ISO 4032 nuts
- Hot dip galvanized DIN 933 bolts with galvanized flat washers
- ISO 7089 and DIN 125 flat washer supply according to drawing requirement
For older purchasing documents, buyers may also see DIN 125 flat washers used as a related reference. The project drawing should decide which standard controls the final dimensions and inspection requirement.
Detailed Specifications Table
| Item | Available Specification | Buyer Notes |
|---|---|---|
| Product Name | ISO 7089 flat washers, plain washers, metric washers | Used under bolt heads or nuts to distribute load and protect mating surfaces. |
| Size Range | Common metric sizes such as M3, M4, M5, M6, M8, M10, M12, M16, M20, M24, M30 and larger sizes upon request | Send nominal size or drawing dimensions for each line item. |
| Hardness | 140 HV, 200 HV, 300 HV and special hardness options | Higher hardness may be required with high-strength bolts or controlled preload assemblies. |
| Material | Carbon steel, stainless steel A2/A4, brass, alloy steel | Material should match corrosion condition, strength demand, and mating fasteners. |
| Finish | Plain, zinc plated, yellow zinc, black oxide, hot dip galvanized, Dacromet-type coating | Finish should be selected with the bolt and nut as a complete assembly. |
| Manufacturing | Stamping, punching, deburring, heat treatment when required, surface treatment, sorting | Deburring, thickness control, and flatness help reduce assembly problems. |
| Packing | Bulk carton, small box, polybag, woven bag, pallet packing, buyer label | Customized packing can be supplied according to order requirement. |
| Inspection | Dimension, hardness, flatness, burr, surface finish, coating thickness, visual inspection | Inspection reports and third-party inspection can be discussed before order confirmation. |
Material and Grade Explanation
Carbon steel ISO 7089 flat washers are commonly used for machinery, brackets, frames, construction hardware, and general equipment assembly. Stainless steel A2 and A4 washers are preferred for humid, outdoor, marine-adjacent, or appearance-sensitive assemblies. Brass washers may be selected where conductivity, corrosion behavior, or decorative appearance is part of the requirement.
Washer hardness should be reviewed when the assembly uses high-strength bolts. For Grade 8.8 carbon steel hex bolts, buyers may request 200 HV or 300 HV washers depending on the joint design, surface pressure, and tightening method. ISO 7089 washers are often used with metric hex head bolts, ISO 4032 nuts, and DIN 127 spring lock washers in complete fastening sets.
Assembly Matching Notes
- Inside diameter must fit the bolt shank without excessive looseness.
- Outside diameter should support the bearing area and cover the hole properly.
- Washer hardness should be checked for high-strength bolt assemblies.
- Finish should match the bolt and nut finish, especially for outdoor use.
- For mixed kits, define the bolt-nut-washer ratio before packing.
Surface Finish Selection Guide
Zinc Plated
Zinc plated ISO 7089 washers are commonly used with zinc plated DIN 933 bolts for indoor machinery, equipment, brackets, and general industrial fastening. White zinc and yellow zinc can be discussed by order.
Black Oxide
Black oxide washers are often selected with black oxide DIN 933 bolts for fixtures, machinery, and appearance-controlled assemblies. Additional oiling may be required for storage protection.
Hot Dip Galvanized
Hot dip galvanized washers are commonly used with hot dip galvanized DIN 933 bolts for outdoor steel structures. Buyers should confirm coating thickness and dimensional allowance before order.
For coating comparison across bolts, nuts, and washers, review the fastener coating guide and the surface finish selection guide for fastener assemblies.
Manufacturing and Quality Control
ISO 7089 flat washer production requires control of stamping accuracy, inner diameter, outer diameter, thickness, flatness, burr condition, surface appearance, hardness, and coating coverage. For hardened washers, heat treatment and hardness testing are important before final finishing. For stainless steel or decorative washers, surface scratches and edge quality should also be reviewed.
Quality checks can include material verification, dimensional inspection, hardness testing, flatness review, burr inspection, coating thickness testing, salt spray testing when requested, and final packing inspection. XZ Fastener shares more details about quality control for bolts, nuts, washers, and screws for buyers preparing inspection requirements.
Applications
- Machinery frames, equipment bases, brackets, guards, and covers
- Steel structure, construction hardware, anchors, and outdoor assemblies
- Automotive, agricultural equipment, trailers, and maintenance kits
- Electrical cabinets, mounting rails, solar brackets, and general fabrication
- Assemblies using metric hex head bolts, ISO 4032 nuts, and flat washers
- Distributor stock programs covering common metric washer sizes
- Surface protection under bolt heads and nuts on coated parts
- Custom fastener kits supplied according to project size lists and packing needs
For mixed fastener programs, buyers can review XZ Fastener fastener products to combine washers with bolts, nuts, anchors, screws, threaded rods, and custom fasteners.
How to Get a Faster Quotation
To receive a faster quotation for ISO 7089 flat washers, send the standard, nominal size, material, hardness, finish, quantity per size, packaging method, delivery destination, and inspection requirement. If the washer must match an existing bolt and nut assembly, include the bolt standard, bolt grade, nut standard, coating, hole size, and washer position in the assembly.
You can send the complete washer list through the request a quote page together with related bolts, nuts, threaded rods, anchors, drawings, labels, and third-party inspection requirements.
FAQ
What is ISO 7089 used for?
ISO 7089 flat washers are used under bolt heads or nuts to distribute clamp load, protect the mating surface, cover clearance holes, and support a more stable bolted assembly.
Is ISO 7089 the same as DIN 125?
ISO 7089 and DIN 125 are often discussed together for metric flat washers, but the project drawing should decide which standard controls dimensions, hardness, and inspection requirements.
Which hardness should I choose for ISO 7089 washers?
Common hardness options include 140 HV, 200 HV, and 300 HV. Higher hardness may be selected for high-strength bolt assemblies, depending on bolt grade, joint design, and tightening method.
Can ISO 7089 washers be supplied in zinc plated, black oxide, and hot dip galvanized finishes?
Yes. ISO 7089 flat washers can be supplied in zinc plated, yellow zinc, black oxide, hot dip galvanized, plain, Dacromet-type coating, and other finishes upon request.
Can washers be packed together with bolts and nuts?
Yes. ISO 7089 flat washers can be quoted together with DIN 933 bolts, ISO 4017 bolts, ISO 4032 nuts, DIN 127 spring washers, and other fasteners. Please provide the size ratio and packing method for each set.
What information is needed for an ISO 7089 washer quotation?
Please provide standard, nominal size, material, hardness, finish, quantity, packaging method, destination, and inspection requirements. For custom washers, send a drawing with inner diameter, outer diameter, thickness, and tolerance.
Send Your ISO 7089 Flat Washer Inquiry
For a faster and more accurate offer, send your size list, finish, quantity, packaging method, and inspection requirements. XZ Fastener can quote ISO 7089 flat washers together with matching bolts, nuts, spring washers, threaded rods, and related fastener products according to your purchasing plan.
Send Size List and Requirements