Uni5588 Hex Nuts
Standard: UNI5587
Raw material: Q195,SWRCH35K/45K,40CR,42CRMO,etc.
Surface: Plain,zinc plated,black oxide,H.D.G,etc.
Specification Range: M1.6-M64
Property Class:6,8,10,12
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produkt introduktion
Standard: UNI5587
Raw material: Q195,SWRCH35K/45K,40CR,42CRMO,etc.
Surface: Plain,zinc plated,black oxide,H.D.G,etc.
Specification Range: M1.6-M64
Property Class:6,8,10,12




UNI 5588 Hexagon Nuts – Standard, Application, Performance
UNI 5588 is an Italian standard for Style 1 hexagon nuts, equivalent to DIN 934 and ISO 4032. It is a general‑purpose medium‑thickness hexagon nut widely used in industry.
• Standard number: UNI 5588 (1968 edition, currently equivalent to DIN EN 24032)
• Type: Style 1 hexagon nuts
• Thread: Metric coarse/fine pitch, tolerance 6H
• Size range: M1.6 ~ M64
◦ Grade A: d <= 16 mm, for high precision and surface finish requirements
◦ Grade B: d > 16 mm, for general mechanical structures
• Equivalent standards: DIN 934, ISO 4032, GB 6172, CSN 021401, PN 8214
Main Applications Used with bolts, studs and screws to achieve fastening connections.
Medium‑thickness type (m≈0.8d), good vibration and loosening resistance
Full range from M1.6 to M64, various materials and grades for different working conditions
Direct interchangeable with DIN 934 and ISO 4032
Main packaging materials include: small bags, small boxes, cartons, pallets and iron drums.
Customized packaging is available according to customer requirements.
Flexible bulk ordering plans are provided, and both transportation terms and delivery schedules are negotiable.
We are certified by ISO9001:2015, IATF16949:2016, and other international quality standard certifications.
Long-term quality warranty and comprehensive after-sales service are provided.
Established in 2005, our company has evolved over two decades of continuous development into a leading regional enterprise in the fastener industry with fully automated end-to-end production. With an annual output value exceeding RMB 130 million, our product range covers diverse market segments from mid-range to high-end and is distributed worldwide





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