M6 Flat Washer (Plain Washer), ISO 7089

The M6 flat washer (ISO 7089) is 1.6 mm thick, with a 6.4 mm hole and an outside diameter of 12 mm. It sits under M6 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: M6 washer
• Model id: iso7089-m6
• Standard: ISO 7089:2000 · size M6

Files

Part key	Simplified
iso7089-m6	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d1	Inside diameter	6.4	6.4	6.62	6.4	nominal	L1
d2	Outside diameter	11.57	12	12	12	nominal	L1
h	Thickness	1.4	1.6	1.8	1.6	nominal	L1

Drawing

As a PDF: CC-ISO7089-SZ-M6.pdf.

Goes with the M6 flat washer

• ISO 4762 socket head cap screw in 12 lengths from 10 to 60 mm, the same size as this M6 flat washer: M6 Socket Head Cap Screw (Allen Bolt), ISO 4762 / DIN 912
• ISO 4017 hex head screw in 11 lengths from 12 to 60 mm, the same size as this M6 flat washer: M6 Hex Head Screw (Hex Bolt), ISO 4017
• ISO 4032 hex nut, the same size as this M6 flat washer: M6 Hex Nut (Hexagon Nut), ISO 4032 / DIN 934

Approximate mass

Approximate mass of 1000 washers, from fasten.it's DIN EN ISO 7089 table (fasten-it-iso7089), column “weight in Kg x 1000 pcs (ρ=7,85 kg/dm3)”.

• mass per 1000: 1.02 kg

The M6 flat washer beside the M5 and the M8

The M6 is number 6, counting from the smallest, of the 7 ISO 7089 flat washers published here, from M2 to M8.

• Inside diameter (d1): 6.4 mm on the M6 flat washer, against 5.3 mm on the M5 and 8.4 mm on the M8.
• Outside diameter (d2): 12 mm on the M6 flat washer, against 10 mm on the M5 and 16 mm on the M8.
• Thickness (h): 1.6 mm on the M6 flat washer, against 1 mm on the M5 and 1.6 mm on the M8.

Other sizes

• One size smaller: M5 Flat Washer (Plain Washer), ISO 7089, 5.3 mm hole, 10 mm OD.
• One size larger: M8 Flat Washer (Plain Washer), ISO 7089, 8.4 mm hole, 16 mm OD.

Documents

• CC-ISO7089-DS-M6.pdf: M6 datasheet: values with levels, sources
• CC-ISO7089-SZ-M6.pdf: M6 drawing: this size's values on the views
• parts.json: the part record of this size (the platform contract)

Sources

amesweb-iso7089, fasten-it-iso7089, westfield-iso7089. Full citations: the method page and this size's datasheet.

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