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DIN EN ISO 8674 vs UNI 5587

DIN EN ISO 8674 (DIN) and UNI 5587 (UNI) are equivalent fastener standards that specify the same or very similar products. Both standards cover 9 fastener types in our database.

Are DIN EN ISO 8674 and UNI 5587 the same?

DIN EN ISO 8674 (DIN standard) and UNI 5587 (UNI standard) are equivalent standards that define the same fastener geometry and mechanical requirements. Minor differences may exist in tolerances, marking requirements, or referenced test methods, but the products are interchangeable in most applications. Always verify specific project requirements with your engineer.

Standard Overview

Property	DIN EN ISO 8674	UNI 5587
Standard Body	DIN	UNI
Product Types	9 fastener types
Interchangeable?	Yes — equivalent standard

Fastener Types Covered by Both Standards

Product	Category	Has Specs
Hexagon High Nuts, (Style 2) with Metric Fine Pitch Thread - Product Grade A and B	Hex Nuts > Hexagon Nuts, Style 2, Fine Thread	✓
Hexagon Nuts, Style 2, with Metric Fine Pitch Thread - Product Grades A and B	Hex Nuts > Hexagon Nuts, Style 2, Fine Thread	✓
Hexagon Nuts,Style 2-Fine Pitch Thread	Hex Nuts > Hexagon Nuts, Style 2, Fine Thread	✓
Thick Hexagon Nuts (Special Purpose) - ISO Metric Coarse and Fine Thread - Finish A	Hex Nuts > Nuts	✓
Hexagon High Nuts, Style 2, with Fine Pitch Thread - Product Grades A and B	Hex Nuts > Hexagon Nuts, Style 2, Fine Thread	✓
Hexagon Nuts, Style 2, with Fine Pitch Thread

Dimensional Specifications (mm)

From: Hexagon High Nuts, (Style 2) with Metric Fine Pitch Thread - Product Grade A and B — applies to both DIN EN ISO 8674 and UNI 5587

Size	P	e	r	k_max	k_min	s_max	s_min	ds_max	ds_min	k_nominal	ds_nominal
(M10)	1.5	19.64	14	21	20.67	23.36	14.1	0.15	15.1	13.4	0.6
M10	1.5	16.63	12

Surface Treatment for DIN EN ISO 8674 / UNI 5587 Fasteners

Both DIN EN ISO 8674 and UNI 5587 fasteners are available with various surface treatments. Common options for these standards include:

Zinc Plating

96–400 hours salt spray

Zinc-Nickel Plating

720–1500 hours salt spray

Hot-Dip Galvanizing

500–1000 hours salt spray

Technical Specifications & Availability

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