M2 Thin Square Nut (Square Thin Nut), DIN 562

Across the flats an M2 thin square nut (DIN 562) measures 4 mm, and it stands 1.2 mm tall on the M2 × 0.4 thread. It comes as simplified and threaded STEP files.

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

• Also searched as: M2 thin square nut
• Model id: din562-m2
• Standard: DIN 562:2013 · thread M2 × 0.4, ISO metric coarse, right hand

Files

Part key	Simplified	Threaded
din562-m2	STEP	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
s	Width across flats	3.7	4	4	3.85	midpoint of min–max	L1
m	Nut height	0.8	1.2	1.2	1	midpoint of min–max	L1
e	Width across corners	5			5	single limit (min), modeled at the limit	L1
P	Coarse thread pitch		0.4		0.4	nominal	L1
tap_drill	Tap drill diameter		1.6		1.6	nominal	L1
d1	Basic minor diameter		1.5669872		1.5669872	nominal	L1
ch_angle	Chamfered end angle			50	50	single limit (max), modeled at the limit	L2
dh_fine	Clearance hole, fine series		2.2		2.2	nominal	L1
dh_medium	Clearance hole, medium series		2.4		2.4	nominal	L1
dh_coarse	Clearance hole, coarse series		2.6		2.6	nominal	L1

Thread and holes

• Tap drill: 1.6 mm (method: d − P), L1, sources amesweb-tap-drill, rule-tap-drill.
• Clearance hole (ISO 273): close 2.2, normal 2.4, loose 2.6 mm (L1: fine, medium and coarse series (albany-clearance, wikipedia-de-clearance)).

Drawing

As a PDF: CC-DIN562-SZ-M2.pdf.

Goes with the M2 thin square nut

• Spanner: 4 mm, the hexagon's nominal width across flats (s) in the table above.
• ISO 4762 socket head cap screw in 9 lengths from 3 to 20 mm, the same size as this M2 thin square nut: M2 Socket Head Cap Screw (Allen Bolt), ISO 4762 / DIN 912
• ISO 4017 hex head screw in 8 lengths from 4 to 20 mm, the same size as this M2 thin square nut: M2 Hex Head Screw (Hex Bolt), ISO 4017
• ISO 7089 flat washer, the same size as this M2 thin square nut: M2 Flat Washer (Plain Washer), ISO 7089

The M2 thin square nut beside the M2.5

The M2 is the smallest of the 7 DIN 562 thin square nuts published here, from M2 to M8.

• Width across flats (s): 4 mm on the M2 thin square nut, against 5 mm on the M2.5.
• Nut height (m): 1.2 mm on the M2 thin square nut, against 1.6 mm on the M2.5.
• Width across corners (e): at least 5 mm on the M2 thin square nut, against at least 6.3 mm on the M2.5.
• Coarse thread pitch (P): 0.4 mm on the M2 thin square nut, against 0.45 mm on the M2.5.
• Tap drill diameter (tap_drill): 1.6 mm on the M2 thin square nut, against 2.05 mm on the M2.5.
• Basic minor diameter (d1): 1.5669872 mm on the M2 thin square nut, against 2.0128606 mm on the M2.5.
• Chamfered end angle (ch_angle): up to 50° on the M2 thin square nut, the same on the M2.5.
• Clearance hole, fine series (dh_fine): 2.2 mm on the M2 thin square nut, against 2.7 mm on the M2.5.

Other sizes

• One size larger: M2.5 Thin Square Nut (Square Thin Nut), DIN 562, 5 mm across flats.

Documents

• CC-DIN562-DS-M2.pdf: M2 datasheet: values with levels, sources
• CC-DIN562-SZ-M2.pdf: M2 drawing: this size's values on the views
• parts.json: the part record of this size (the platform contract)

Sources

albany-clearance, amesweb-tap-drill, cde-din562, fasten-it-din562, fasteners-eu-din562, iso4753-2011-sample, rule-basic-minor, rule-iso4759-1-nut-height-din562, rule-iso4759-1-nut-width-din562, rule-tap-drill, wegertseder-din562, wikipedia-de-clearance, wikipedia-iso261. Full citations: the method page and this size's datasheet.

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