M5 Thin Square Nut (Square Thin Nut), DIN 562

The M5 thin square nut (DIN 562) is 8 mm across the flats and 2.7 mm high. The thread is M5 × 0.8; the files are simplified and threaded STEP files.

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

• Also searched as: M5 thin square nut
• Model id: din562-m5
• Standard: DIN 562:2013 · thread M5 × 0.8, ISO metric coarse, right hand

Files

Part key	Simplified	Threaded
din562-m5	STEP	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
s	Width across flats	7.64	8	8	7.82	midpoint of min–max	L1
m	Nut height	2.3	2.7	2.7	2.5	midpoint of min–max	L1
e	Width across corners	10.2			10.2	single limit (min), modeled at the limit	L1
P	Coarse thread pitch		0.8		0.8	nominal	L1
tap_drill	Tap drill diameter		4.2		4.2	nominal	L1
d1	Basic minor diameter		4.1339744		4.1339744	nominal	L1
ch_angle	Chamfered end angle			50	50	single limit (max), modeled at the limit	L2
dh_fine	Clearance hole, fine series		5.3		5.3	nominal	L1
dh_medium	Clearance hole, medium series		5.5		5.5	nominal	L1
dh_coarse	Clearance hole, coarse series		5.8		5.8	nominal	L1

Thread and holes

• Tap drill: 4.2 mm (method: d − P), L1, sources amesweb-tap-drill, rule-tap-drill.
• Clearance hole (ISO 273): close 5.3, normal 5.5, loose 5.8 mm (L1: fine, medium and coarse series (albany-clearance, wikipedia-de-clearance)).

Drawing

As a PDF: CC-DIN562-SZ-M5.pdf.

Goes with the M5 thin square nut

• Spanner: 8 mm, the hexagon's nominal width across flats (s) in the table above.
• ISO 4762 socket head cap screw in 11 lengths from 8 to 50 mm, the same size as this M5 thin square nut: M5 Socket Head Cap Screw (Allen Bolt), ISO 4762 / DIN 912
• ISO 4017 hex head screw in 10 lengths from 10 to 50 mm, the same size as this M5 thin square nut: M5 Hex Head Screw (Hex Bolt), ISO 4017
• ISO 7089 flat washer, the same size as this M5 thin square nut: M5 Flat Washer (Plain Washer), ISO 7089

The M5 thin square nut beside the M4 and the M6

The M5 is number 5, counting from the smallest, of the 7 DIN 562 thin square nuts published here, from M2 to M8.

• Width across flats (s): 8 mm on the M5 thin square nut, against 7 mm on the M4 and 10 mm on the M6.
• Nut height (m): 2.7 mm on the M5 thin square nut, against 2.2 mm on the M4 and 3.2 mm on the M6.
• Width across corners (e): at least 10.2 mm on the M5 thin square nut, against at least 8.9 mm on the M4 and at least 12.7 mm on the M6.
• Coarse thread pitch (P): 0.8 mm on the M5 thin square nut, against 0.7 mm on the M4 and 1 mm on the M6.
• Tap drill diameter (tap_drill): 4.2 mm on the M5 thin square nut, against 3.3 mm on the M4 and 5 mm on the M6.
• Basic minor diameter (d1): 4.1339744 mm on the M5 thin square nut, against 3.2422276 mm on the M4 and 4.917468 mm on the M6.
• Chamfered end angle (ch_angle): up to 50° on the M5 thin square nut, the same on the M4 and the M6.
• Clearance hole, fine series (dh_fine): 5.3 mm on the M5 thin square nut, against 4.3 mm on the M4 and 6.4 mm on the M6.

Other sizes

• One size smaller: M4 Thin Square Nut (Square Thin Nut), DIN 562, 7 mm across flats.
• One size larger: M6 Thin Square Nut (Square Thin Nut), DIN 562, 10 mm across flats.

Documents

• CC-DIN562-DS-M5.pdf: M5 datasheet: values with levels, sources
• CC-DIN562-SZ-M5.pdf: M5 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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