ANG
WHAT WOULD THE WORLD LOOK LIKE WITHOUT BOLTS?

BOLT TYPES BY FUNCTION

Combining the wisdom of tradition and the freshness of innovation, we deliver solutions to engineering challenges through the production of special, high-end bolts of the highest quality.  We cooperate with the most reputable companies in the world, including Andritz, Siemens, Dana Group, Thyssen Krupp, Knorr Bremse, Geislinger, Schottel, Oerlikon Barmag, Renk, Alfing Kessler, who all integrate Blaj bolts in their products. Our bolts are designed according to customers’ requirements or standards.

  • HOT FORGED, SPECIAL AND STANDARD BOLTS

    HOT FORGED, SPECIAL AND STANDARD BOLTS

    Different bolt head shapes: square, hexagonal, 8-point, 12-point, cylinder, countersunk, internal and external TORX.
  • FASTENERS MANUFACTURED BY CUTTING

    FASTENERS MANUFACTURED BY CUTTING

    Fasteners with deep sockets, flexible ground shanks or smooth rolled surfaces.
  • MACHINE BOLTS AND THREADED RODS

    MACHINE BOLTS AND THREADED RODS

    Various machine bolts and threaded rods.
  • NUTS (SIZES FROM M6 TO M120)

    NUTS (SIZES FROM M6 TO M120)

    We manufacture nuts by pressure forging or machining processes without forming.
  • FASTENERS WITH VARIOUS THREAD TYPES

    FASTENERS WITH VARIOUS THREAD TYPES

    Metric threads, metric fine threads, Whitworth threads, UN threads, UNC threads, UNF threads.

SURFACE PROTECTION IS KEY TO SUSTAINABILITY

Additional surface treatment increases the corrosion resistance of our products and allows for a lower friction coefficient, greater surface hardness or resistance to abrasion and protection against unscrewing, all of which extends the lifespan of our products.


blackening

galvanised zinc coating according to ISO 4042

non-electrolytically applied zinc flake coatings according to ISO 10683

hot-dip zinc coating according to ISO 10684

phosphate conversion coating according to EN 12476


electroless nickel plating

descaling and passivation of stainless steels

induction hardening

plasma nitriding

gas nitriding

cementing"TUFLOK” thread treatment

black oxide coating according to DIN 50938


CERTIFIED AND EXOTIC MATERIALS

We are constantly improving our machining technologies for new and exotic light materials (inconel, titanium, Ni alloys) which are used in high-temperature environments. Substantial investments in analyses, education and training of our staff is reflected in our dynamic development, high product quality and extremely low complaint rate over the last decade, which could be measured in promille. 
Property classes compliant with ISO 898-1: Property classes compliant with ISO 898-2:

4.6 6
5.6 8
8.8 10
10.9 12
12.9
(14.9)

Steel for fasteners with specified elevated and/or low temperature properties compliant with EN 10269, DIN 267/13 (DIN 17240, DIN 17280)

Stainless steels compliant with EN 10088-3 (DIN 17440)