
Product Description
DIN 125-A round flat washer (form A), 28 x 50 x 4 mm, Article number 125P280. Surface finish: plain. 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
- A
- Property class / grade
- -
- Class (detailed)
- -
- Material hardness
- -
- 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
- 125P280
- Category
- Washers / Plain Washers
Standards & Compliance
- Standard
- DIN 125
- Size / Series
- 28 x 50 x 4 mm
- HS Code
- 731822
Product Documentation
More from Bufab

Bufab
DIN 125-A Round Flat Washer, 31 x 56 x 4 mm, Plain
125P310

Bufab
DIN 125-A Round Flat Washer, 34 x 60 x 5 mm, Plain
125P340

Bufab
DIN 125-A Round Flat Washer, 37 x 66 x 5 mm, Plain
125P370

Bufab
DIN 125-A Round Flat Washer, 40 x 72 x 6 mm, Plain
125P400

Bufab
DIN 125-A Round Flat Washer, 4.3 x 9 x 0.8 mm, Plain (125PB043)

Bufab
DIN 125-A Round Flat Washer, 6.4 x 12 x 1.6 mm, Plain (125PB064)

Bufab
DIN 125-B Round Flat Washer, 8.4 x 16 x 1.6 mm, Plain (125PB084)

Bufab
DIN 125-B Round Flat Washer, 10.5 x 20 x 2 mm, Plain (125PB105)
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 125P280?
- 125P280 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 125P280.
- What is the HS code for 125P280?
- The customs tariff (HS) code for 125P280 is 731822.
- Who manufactures 125P280?
- 125P280 is a Bufab product in the C-Parts range.
- Is a datasheet available for 125P280?
- Yes — the 125P280 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 125P280?
- The minimum order quantity is 1.
- Is 125P280 available?
- Yes — 125P280 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).
