M8 Large Flat Washer (Fender Washer), DIN 9021

The M8 large flat washer (DIN 9021) is 2 mm thick, with an 8.4 mm hole and an outside diameter of 24 mm. It sits under M8 screw heads and nuts; here as simplified STEP files.

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

• Also searched as: M8 washer
• Model id: din9021-m8
• Standard: DIN 9021:1990 · size M8

Files

Part key	Simplified
din9021-m8	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d1	Inside diameter		8.4	8.62	8.4	nominal	L1
d2	Outside diameter	23.48	24		24	nominal	L1
h	Thickness	1.8	2	2.2	2	nominal	L1

Drawing

As a PDF: CC-DIN9021-SZ-M8.pdf.

Goes with the M8 large flat washer

• ISO 4762 socket head cap screw in 14 lengths from 12 to 80 mm, the same size as this M8 large flat washer: M8 Socket Head Cap Screw (Allen Bolt), ISO 4762 / DIN 912
• ISO 4017 hex head screw in 13 lengths from 16 to 80 mm, the same size as this M8 large flat washer: M8 Hex Head Screw (Hex Bolt), ISO 4017
• ISO 4032 hex nut, the same size as this M8 large flat washer: M8 Hex Nut (Hexagon Nut), ISO 4032 / DIN 934

The M8 large flat washer beside the M6

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

• Inside diameter (d1): 8.4 mm on the M8 large flat washer, against 6.4 mm on the M6.
• Outside diameter (d2): 24 mm on the M8 large flat washer, against 18 mm on the M6.
• Thickness (h): 2 mm on the M8 large flat washer, against 1.6 mm on the M6.

Other sizes

• One size smaller: M6 Large Flat Washer (Fender Washer), DIN 9021, 6.4 mm hole, 18 mm OD.

Documents

• CC-DIN9021-DS-M8.pdf: M8 datasheet: values with levels, sources
• CC-DIN9021-SZ-M8.pdf: M8 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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