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Русский stainless steel flat washers manufacturer
XZ Fastener manufactures stainless steel flat washers for bolt and nut assemblies used in machinery, marine equipment, construction hardware, electrical cabinets, food equipment, and OEM fastening kits. Washers can be supplied according to DIN 125, ISO 7089, ISO 7090, ANSI, or customer drawings, with A2/304, A4/316, 316L, and special stainless grades available upon request. Inner diameter, outer diameter, thickness, burr control, surface finish, packaging, and inspection requirements can be confirmed before production for stable assembly fit.
Metric and inch stainless flat washers can be supplied loose, packed by size, or included in bolt-nut-washer sets.
Quick Specs
What Buyers Should Know Before Sourcing Stainless Steel Flat Washers
Washer Size Must Match the Bolt Assembly
Flat washers are simple parts, but incorrect inner diameter, outer diameter, or thickness can affect load distribution, clearance, and assembly appearance. Buyers should match the washer to the bolt diameter, nut size, hole clearance, and surface material. XZ Fastener’s guide on how to match washer size with bolt and nut size is useful before preparing bulk orders.
Choose the Stainless Grade by Environment
A2/304 stainless steel flat washers are widely used in general industrial assemblies, while A4/316 washers are often preferred for marine, coastal, chemical, or higher humidity environments. If washers will be assembled with stainless bolts and nuts, the material grade and finish should be consistent across the set.
Common Purchasing Descriptions
Flat washer inquiries should include standard, size, stainless grade, thickness, finish, quantity, and packaging. The following descriptions are commonly used by distributors, OEM buyers, and project purchasers.
- DIN 125 stainless steel flat washers, A2/304, plain finish
- ISO 7089 flat washers, A4/316 stainless steel, deburred edges
- ISO 7090 large series stainless flat washers for wider bearing surface
- Metric stainless steel flat washers packed with hex bolts and hex nuts
- Stainless flat washers for DIN 933 full thread hex bolts and metric hex head bolts
- Washer kits for Grade 8.8 carbon steel hex bolts, zinc plated DIN 933 bolts, black oxide DIN 933 bolts, and hot dip galvanized DIN 933 bolts when mixed project packages are required
For general washer selection, buyers can review XZ Fastener’s flat washers guide for sizes, materials, and industrial applications.
Detailed Specifications Table
| عنصر | Common Options | Purchasing Notes |
|---|---|---|
| Product Name | Stainless steel flat washers | Also called stainless plain washers or stainless round washers |
| المعايير | DIN 125, ISO 7089, ISO 7090, ANSI, JIS, GB, custom drawing | Confirm the standard because inner diameter, outer diameter, and thickness may differ |
| نطاق الحجم | M2 to M64, inch sizes available upon request | Washer size should match bolt diameter, hole clearance, and bearing surface requirement |
| نوع الغسالة | Standard flat washer, large OD washer, thick washer, custom washer | Large or thick washers may be used when surface pressure or hole clearance needs control |
| مادة | 304/A2, 316/A4, 316L, 321, 310S, 410 stainless steel | Material should match corrosion exposure and the bolts or nuts used in the assembly |
| صلابة | Standard stainless hardness; hardened or special requirement upon request | Hardness should be specified for high-load or engineering-controlled assemblies |
| Finish | Plain, passivated, polished, cleaned, deburred, custom finish | Burr control and surface cleanliness should be confirmed for visible or sensitive assemblies |
| Inspection | ID, OD, thickness, flatness, burrs, material grade, visual surface, packing check | Inspection reports are available upon request when specified before order confirmation |
| Packaging | Bulk cartons, small boxes, bags, pallets, mixed kits, private labels | Washers can be packed separately or with matching bolts and nuts according to order requirement |
Material and Grade Explanation
Stainless steel flat washers are often chosen for corrosion resistance, clean appearance, and compatibility with stainless bolts and nuts. A2/304 is suitable for many indoor, outdoor, and general machinery applications. A4/316 provides improved resistance in marine, coastal, chloride, and chemical environments. For special applications, 316L, 321, 310S, or 410 stainless steel may be discussed according to drawing or service condition.
When washers are ordered as part of a stainless assembly, the grade should be matched with the bolt and nut material. XZ Fastener’s guide to matching stainless steel bolts, nuts, and washers can help reduce mixed-material mistakes in purchasing.
Surface Finish Selection Guide
Plain Stainless
Common for general washer supply where natural stainless appearance is acceptable and no additional finishing is required.
Passivated
Used to improve surface cleanliness and corrosion resistance after production, handling, or machining. Available upon request.
Polished
Selected for visible assemblies, architectural hardware, machinery covers, or equipment where appearance is important.
Deburred
Important when washers contact soft surfaces, painted parts, plastic housings, or finished panels where sharp edges are not acceptable.
Cleaned or Degreased
Used for equipment, electrical, or clean assembly applications where oil residue and surface contamination should be reduced.
Custom Surface
Special polishing, blackened stainless, marking, or packaging protection can be discussed when drawings or samples are provided.
For broader material selection, buyers can also compare A2 vs A4 fasteners for corrosion resistance.
Manufacturing and Quality Control
Stainless steel flat washer production may include strip or coil inspection, blanking, punching, forming, deburring, cleaning, passivation or polishing where required, sorting, inspection, and packing. Key inspection points include inner diameter, outer diameter, thickness, flatness, burr condition, material grade, surface finish, and package label accuracy.
For inspection planning, XZ Fastener’s guide to fastener quality control during manufacturing explains practical checkpoints from raw material to packing.
تطبيقات
- Stainless bolt and nut assemblies for machinery and equipment frames
- Marine hardware, coastal construction, outdoor brackets, and rail systems
- Food machinery, packaging equipment, pumps, valves, and clean assemblies
- Electrical cabinets, solar mounting hardware, furniture, and architectural parts
- Distributor stock programs for DIN 125, ISO 7089, and ISO 7090 washers
- OEM kits packed with stainless bolts, nuts, spring washers, and flat washers
- Replacement projects requiring exact washer ID, OD, and thickness control
- Custom washer drawings where standard washer sizes cannot meet assembly needs
For assembly behavior, the article on flat washers and load distribution explains why washer selection still matters in practical fastening.
How to Get a Faster Quotation
To help XZ Fastener prepare an accurate quotation, please send the standard or drawing, size list, inner diameter, outer diameter, thickness, stainless grade, finish, quantity, packaging method, and inspection requirements. If washers need to be supplied with bolts, nuts, or spring washers, include the matching fastener details and packing method in the same inquiry.
For a structured inquiry, use the request a quote page with drawings, photos, samples, or current supplier part numbers.
أسئلة متكررة
What stainless grades are common for flat washers?
A2/304 and A4/316 are the most common stainless grades for flat washers. 316L, 321, 310S, and 410 can be discussed when special service conditions or drawings require them.
What is the difference between DIN 125 and ISO 7089 flat washers?
Both are widely used washer standards, but exact dimensions and project acceptance requirements should be confirmed before substitution. Buyers should provide the standard shown on the drawing or purchase list.
Can stainless steel flat washers be passivated?
Yes. Passivation can be supplied upon request for suitable stainless washer materials when surface cleanliness and corrosion resistance are important.
Can washers be packed with bolts and nuts?
Yes. Stainless flat washers can be packed with matching bolts, nuts, and spring washers as assembly kits, small bags, cartons, or palletized shipments according to order requirement.
How should washer size be specified in an RFQ?
Please provide the standard, nominal size, inner diameter, outer diameter, thickness, material grade, finish, quantity, packaging method, and inspection requirements.
Can XZ Fastener manufacture custom stainless washers?
Yes. Custom washer ID, OD, thickness, material, finish, and packaging can be discussed when drawings, samples, or application details are provided.
Send Your Stainless Steel Flat Washer Inquiry
For a faster quotation, please send your size list, finish, quantity, packaging method, and inspection requirements. Drawings, stainless grade, ID, OD, thickness, deburring requirement, and matching bolt or nut details help confirm the correct stainless steel flat washers before production.
Request a Quote from XZ Fastener