M2.5 Large Flat Washer (Fender Washer), DIN 9021

Made for M2.5 screws, this large flat washer (DIN 9021) has a 2.7 mm hole and is 8 mm across, 0.8 mm thick. Download it as simplified STEP files.

How these parts are made, and what the levels mean: read the method

• Also searched as: M2.5 washer
• Model id: din9021-m2-5
• Standard: DIN 9021:1990 · size M2.5

Files

Part key	Simplified
din9021-m2-5	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d1	Inside diameter		2.7	2.84	2.7	nominal	L1
d2	Outside diameter	7.64	8		8	nominal	L1
h	Thickness	0.7	0.8	0.9	0.8	nominal	L1

Drawing

As a PDF: CC-DIN9021-SZ-M2.5.pdf.

Goes with the M2.5 large flat washer

• ISO 4762 socket head cap screw in 9 lengths from 4 to 25 mm, the same size as this M2.5 large flat washer: M2.5 Socket Head Cap Screw (Allen Bolt), ISO 4762 / DIN 912
• ISO 4017 hex head screw in 8 lengths from 5 to 25 mm, the same size as this M2.5 large flat washer: M2.5 Hex Head Screw (Hex Bolt), ISO 4017
• ISO 4032 hex nut, the same size as this M2.5 large flat washer: M2.5 Hex Nut (Hexagon Nut), ISO 4032 / DIN 934

The M2.5 large flat washer beside the M3

The M2.5 is the smallest of the 6 DIN 9021 large flat washers published here, from M2.5 to M8.

• Inside diameter (d1): 2.7 mm on the M2.5 large flat washer, against 3.2 mm on the M3.
• Outside diameter (d2): 8 mm on the M2.5 large flat washer, against 9 mm on the M3.
• Thickness (h): 0.8 mm on the M2.5 large flat washer, the same on the M3.

Other sizes

• One size larger: M3 Large Flat Washer (Fender Washer), DIN 9021, 3.2 mm hole, 9 mm OD.

Documents

• CC-DIN9021-DS-M2.5.pdf: M2.5 datasheet: values with levels, sources
• CC-DIN9021-SZ-M2.5.pdf: M2.5 drawing: this size's values on the views
• parts.json: the part record of this size (the platform contract)

Sources

fasten-it-din9021, fasteners-eu-din9021, jcfasteners-din9021. Full citations: the method page and this size's datasheet.

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