Carbon steel screws and bolts

Production of carbon steel screws and bolts class 8.8, class 10.9 and class 12.9

Bontempi VIBO’s production includes screws and bolts made from carbon steel to guarantee high strength in classes 8.8, 10.9 and 12.9.

A wide range of plain products, white zinc plated or with customised surface treatment ensure excellent fastening strength on different types of installation.

For us, quality and punctuality are paramount, which is why we offer certified fasteners, guaranteed on time and ready for use.

Produzione viteria acciaio carbonio

35
THOUSAND

tonnes of screws produced each year

Available types

DIN 931 UNI 5737 ISO 4014

ISO 4014 DIN 931 UNI 5737 

DIN 931 UNI 5737 ISO 4014
Class 8.8
Diameter available from 5 to 64
Surface finish plain or galvanized white
Extra other surface finishings available upon request
DIN 960 UNI 5738 ISO 8765

ISO 8765 DIN 960 UNI 5738 

DIN 960 UNI 5738 ISO 8765
Class 8.8
Diameter available from 10 to 30
Surface finish plain
Extra other surface finishings available upon request
DIN 933 UNI 5739 ISO 4017

ISO 4017 DIN 933 UNI 5739 

DIN 933 UNI 5739 ISO 4017
Class 8.8
Diameter available from 5 to 48
Surface finish plain or galvanized white
Extra
other surface finishings available upon request
DIN 961 UNI 5740 ISO 8676

ISO 8676 DIN 961 UNI 5740 

DIN 961 UNI 5740 ISO 8676
Class 8.8
Diameter available from 10 to 24
Surface finish plain
Extra
other surface finishings available upon request
DIN 912 UNI 5931 ISO 4762

ISO 4762 DIN 912 UNI 5931 

DIN 912 UNI 5931 ISO 4762
Class 8.8
Diameter available from 5 to 48
Surface finish plain or galvanized white
Extra
other surface finishings available upon request
DIN 6921

DIN 6921

DIN 6921
Class 8.8
Diameter available from 5
Surface finish other surface finishings available upon request
DIN 7984 UNI 9327 ISO 7984

ISO 7984 DIN 7984 UNI 9327 

DIN 7984 UNI 9327 ISO 7984
Class 8.8
Diameter available from 6 to 10
Surface finish plain or galvanized white
Extra
other surface finishings available upon request
ISO14579

ISO 14579

VITE UNI 14579
Class 8.8
Diameter available from 6 to 10
Surface finish galvanized white
Extra
other surface finishings available upon request
ISO 14580

ISO 14580

ISO 14580
Class 8.8
Diameter available from 5 to 8
Surface finish plain or galvanized white
Extra
other surface finishings available upon request
zzap-8.8

ZZAP 8.8 – DIN960 8.8

ZZAP 8.8 – DIN960 8.8
Class 8.8
Diameter available from 10 to 14
Surface finish other surface finishings available upon request

DIN 34800

DIN 34800
Class 10.9
Diameter available from 6 to 8
Surface finish galvanized white
Extra other surface finishings available upon request
DIN 931 UNI 5737 ISO 4014 - 109

ISO 4014 DIN 931 UNI 5737 

DIN 931 UNI 5737 ISO 4014
Class 10.9
Diameter available from 5 to 64
Surface finish plain
Extra other surface finishings available upon request
DIN 960 UNI 5738 ISO 8765 - 109

ISO 8765 DIN 960 UNI 5738 

DIN 960 UNI 5738 ISO 8765
Class 10.9
Diameter available from 10 to 30
Surface finish plain
Extra
other surface finishings available upon request
DIN 933 UNI 5739 ISO 4017 - 109

ISO 4017 DIN 933 UNI 5739 

DIN 933 UNI 5739 ISO 4017
Class 10.9
Diameter available from 5 to 48
Surface finish plain
Extra
other surface finishings available upon request
DIN 961 UNI 5740 ISO 8676 - 109

ISO 8676 DIN 961 UNI 5740 

DIN 961 UNI 5740 ISO 8676
Class 10.9
Diameter available from 10 to 24
Surface finish plain
Extra
other surface finishings available upon request
DIN 912 UNI 5931 ISO 4762 - 109

ISO 4762 DIN 912 UNI 5931 

DIN 912 UNI 5931 ISO 4762
Class 10.9
Diameter available from 5 to 48
Surface finish plain
Extra
other surface finishings available upon request
DIN 7380 UNI 7380 ISO 7380 - 109

ISO 7380-1

ISO 7380-1
Class 10.9
Diameter available from 6 to 12
Surface finish plain or galvanized white
Extra
other surface finishings available upon request
ISO 7380-2 - 109

ISO 7380-2

ISO 7380-2
Class 10.9
Diameter available from 6 to 8
Surface finish plain or galvanized white
Extra
other surface finishings available upon request
Din 34805 1

DIN 34805-1

DIN 34805-1
Class 10.9
Diameter available from 6 to 10
Surface finish galvanized white
Extra
other surface finishings available upon request
DIN 7991 UNI 5933 ISO 10642 - 109

ISO 10642 DIN 7991 UNI 5933 

DIN 7991 UNI 5933 ISO 10642
Class 10.9
Diameter available from 6 to 8
Surface finish plain or galvanized white
Extra
other surface finishings available upon request
ZZAP 10.9 - DIN960 10.9

ZZAP 10.9 – DIN960 10.9

ZZAP 10.9 – DIN960 10.9
Class 10.9
Diameter available from 10 to 14
Surface finish other surface finishings available upon request
DIN 912 UNI 5931 ISO 4762 - 129

ISO 4762 DIN 912 UNI 5931 

DIN 912 UNI 5931 ISO 4762
Class 12.9
Diameter available from 5 to 48
Surface finish plain
Extra
other surface finishings available upon request

Other types of screws

Bulloneria strutturale

STRUCTURAL
BOLTS

Classes: 10.9
Diameters: M12 / M36

viti-standard-acciaio-inox

STANDARD STAINLESS
STEEL SCREWS

Classes: A2-70 / A4-70
Diameters: M5 / M30

Viti speciali a disegno

SPECIAL SCREWS
BY PROJECT

Diameters: M5 / M64
For every screw and bolt requirement

Viti per automotive Memeaf

AUTOMOTIVE
SCREWS

Bontempi Vibo S.p.A. has acquired Mi.Me.Af. S.p.A., a leading manufacturer of screws and bolts for the automotive sector

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