Product Description
DIN 125-B round flat washer (form B), 28 x 50 x 4 mm, Article number 125BA4280. Made in stainless steel a4. Round Flat Washer manufactured to DIN 125. Standard parts to the same standard, property class, dimensions and surface finish are interchangeable between manufacturers; confirm the controlling standard revision, any class-society or application approval, and the mating thread before substitution. Applications: load distribution and locking under bolt heads and nuts in machine building, structural steel, plant maintenance and marine outfitting.
Technical Specifications
- Standard
- DIN 125
- Standard description
- B
- Property class / grade
- A4
- Class (detailed)
- A4
- Material hardness
- HV140
- Surface treatment
- Plain (no plating)
- Surface treatment code
- PLAIN
- Diameter
- 27 mm
- Inner diameter
- 28 mm
- Outer diameter
- 50 mm
- Thickness
- 4 mm
- Article number
- 125BA4280
- Category
- Washers / Plain Washers
Standards & Compliance
- Standard
- DIN 125
- Size / Series
- 28 x 50 x 4 mm
- Material
- Stainless A4
- HS Code
- 731822
Product Documentation
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Technical guides
Catalogue entry last verified: 2026-09-30. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy 125BA4280?
- 125BA4280 can be ordered from cballast.com as a Bufab catalogue item: request a quotation on this page or email sales@cballast.com, and the order ships worldwide.
- What is the manufacturer part number for this Bufab product?
- The manufacturer part number is 125BA4280.
- What is the HS code for 125BA4280?
- The customs tariff (HS) code for 125BA4280 is 731822.
- Who manufactures 125BA4280?
- 125BA4280 is a Bufab product in the C-Parts range.
- Is a datasheet available for 125BA4280?
- Yes — the 125BA4280 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 125BA4280?
- The minimum order quantity is 1.
- Is 125BA4280 available?
- Yes — 125BA4280 is available to order: fulfilment is from supplier stock in cBallast's European network, dispatched directly from the warehouse to the customer, with the exact lead time stated in the quotation (reply within 24 hours).