COLOMBO SPECIAL FASTENERS S.R.L

Italian company specialized in the manufacture of special fasteners on customers drawing. Co-design, cold forming, threading, machining, heat and surface treatments, as well as inspection and sorting of the finished parts. Production range: Ø 2.5mm – 30mm / L. max 240mm. With over 60 years of expertise #yourfastenersspecialist

Via F.lli Rosselli,
1 Cisano Bergamasco,
24034 (BG),
Italy

Tel:

+39 035 78 21 05

E-Mail

Web

Products

Bolts

Hexagon head bolts

Hexagon bolts with flange (DIN: 6921/ISO: EN 1665)Hexagon head bolts with hexagon nut for steel structures (DIN: 7990)Hexagon head bolts with shank - metric fine pitch thread (DIN: 960/ISO: 8765)Hexagon head bolts with shank - Product grade C (DIN: 601/ISO: 4016)Hexagon head bolts with shank (DIN: 931/ISO: 4014)Hexagon head screw with full metric fine pitch thread (DIN: 961/ISO: 8676)Hexagon head screws with full thread (DIN: 933/ISO: 4017)Hexagon head screws with thread up to the head - Product grade C (DIN: 558/ISO: 4018)

Other bolt types

Bolt for T-slots (DIN: 787)Carriage bolt (DIN: 603)Flat countersunk head nib bolts (DIN: 604)Flat countersunk head square neck bolts with long square (DIN: 605)Flat countersunk head square neck bolts with short square (DIN: 608)Hexagon fit bolt with long thread (DIN: 609)Hexagon head fit bolt with short thread (DIN: 610)T-head bolt (DIN: 261)T-head bolt with square neck (DIN: 186)Triangle head bolt (DIN: 22424)

Construction fixings

Concrete screwsStructural steel fasteners

Other products

Non-ferrous fasteners (brass, titanium, aluminium, copper)Non-metric fastenersStainless steel fasteners Turned/machined parts

Screws

Other screw types

Thread rolling screws (DIN: 7500)

Small slotted or cross recessed screws

Cross recessed raised countersunk head wood screw (DIN: 7995)Cross recessed round head wood screw (DIN: 7996)

Wood screws

Hexagon head woods screws (DIN: 571)

Self drilling/tapping screws

Hexalobular raised countersunk head (ISO: 14587 C)Hexalobular socket pan head tapping screw (DIN: 7981 C/ISO: 14585 C)Self drilling screw (DIN: 7504 N/ISO: 15481)Self drilling screw with hexagonal head (DIN: 7504 K/ISO: 15480)

Self-tapping/thread forming screws

Tapping screws

Cross recessed pan head tapping screw (DIN: 7981/ISO: 7049)Cross recessed raised countersunk head tapping screw (DIN: 7983/ISO: 7051)Hexagon head tapping screw (DIN: 7976/ISO: 1379)Slotted pan head tapping screw (DIN: 7971/ISO: 1481)

Thread forming screws

Self-drilling screw (DIN: 7504)Thread cutting screws - cross recessed head screws (DIN: 7516)Thread cutting screws - hexagon screws and slotted head screws (DIN: 7513)

Socket head products

Screws with normal cylindrical head

Hexagon socket head cap screws (DIN: 912/ISO: 4762)Hexagon socket head cap screws with metric fine pitch thread (DIN: 912/ISO: 12474)Hexalobular socket head cap screws (ISO: 14579)

Small hexagon or hexalobular screws

Hexagon socket button head screws with collar (ISO: 7380)Hexagon socket head cap screw fully threaded (DIN: 7984)Hexagon socket head cap screws with low head (DIN: 7984)