Fasteners for the manufacturing industry

Zilken supplies screws, nuts, washers, bolts, pins, and rivets for industrial applications. All products are delivered in compliance with standards, are traceable, and, if needed, are backed by appropriate inventory levels.

Hex head screws and flange connections in an industrial plant – fasteners from the Zilken product range
TÜV certificate logo - ISO 9001

Why Choose Zilken for Fasteners

Width and Depth in Fasteners

Screws, nuts, washers, bolts, pins, and rivets across all common standards and materials.

Materials ranging from steel to special alloys

Galvanized steel, A2/A4 stainless steel grades, and hot-rolled and high-strength steels for demanding environments.

Compliant with Standards & Traceable

Fasteners conforming to DIN, DIN-EN, and DIN-EN-ISO standards, available upon request with a 3.1 or 3.2 test certificate in accordance with DIN EN 10204.

For demanding joining applications

Pre-stressed high-tensile connections in steel construction, expansion joint connections in plant engineering, and applications requiring documentation with a certificate.

Select specifications, submit a request

Here you'll find an overview of the materials, standards, and product types that Zilken sources and supplies in the fastener sector. If something isn't listed here, we'll source it for you.

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Product Types & Designs

Hexagon head screw Cylinder screw (hex socket) Hex nut Countersunk screw Stud bolt / Bolt stud Threaded pin Wood screw Threaded bolt Spring ring Threaded rod Expansion screw Pan-head screw Retaining ring Washer Self-tapping screw Eye bolt / Ring bolt Cap nut sprin pin Clamping sleeve Flat-head screw / slotted screw Flat-head screw Cylindrical pin Tooth washer Self-tapping screw Lock washer (wedge/locking tooth) Blind rivet Slotted pin Wing nut Ring nut Body washer All-metal nut Cover cap / Protective cap Taper pin Retaining plate Slotted nut Knurled screw / nut Self-locking nut Hammer-head screw Set screw / plug Shaft screw Screw-in sleeve (Rampa) Flange screw / flange nut Threaded insert Crown nut Welded nut Welded stud Press-fit nut Cage nut Drive-in nut

Materials

A2 stainless steel (1.4301) Stainless steel A4 (1.4401 / 1.4404 / 1.4571) Tempered steel (25CrMo4 / 1.7218) heat-resistant (21CrMoV5-7 / 1.7709) Brass (CuZn) Quenched and tempered steel (C35 / 1.1181) High-temperature-resistant, austenitic (1.4980) Spring steel (1.4310) Stainless steel A1 (1.4305, free-cutting steel) Superaustenitic (1.4529) Aluminum Polyamide (PA 6.6) Steel (42CrMo4 / 1.7225) Copper (Cu) Duplex (1.4462) Super Duplex (1.4410) Nickel-based alloy (Inconel/Hastelloy) Titanium (Grade 5) PEEK (high-performance plastic)

Drives, Head Shapes & Designs

External hexagon Internal hex Slotted Cross-recess (Phillips / Pozidriv) hexalobular (internal six-lobe) Torx TX) Countersunk head Flat head Square Full-threaded Fine thread Dome head Disc head Half-round head Partially threaded

Strength classes

8.8 5.6 10.9 4.8 4.6 12.9 5.8 6.6 A2-70 A4-70 A4-80 A2-50 A4-50 A2-80

Anti-loosening/Screw Locking Agent

self-locking / with clamping piece with locking teeth Fine-threaded/clamping nut Wedge lock (locking tooth principle)

Material Numbers

1.7218 (25CrMo4) 1.7225 (42CrMo4) 1.1181 (C35E) 1.7258 (24CrMo5) 1.7709 (21CrMoV5-7) 1.4980 (X5NiCrTi26-15) 1.4923 (X22CrMoV12-1) 1.4301 (X5CrNi18-10, A2) 1.4305 (X8CrNiS18-9) 1.4401 (X5CrNiMo17-12-2, A4) 1.4404 (X2CrNiMo17-12-2, A4) 1.4571 (X6CrNiMoTi17-12-2, A5) 1.4529 (X1NiCrMoCuN25-20-7) 1.4310 (X10CrNi18-8, spring steel) 1.4122 (X39CrMo17-1) 1.4000 (X6Cr13) 1.1141 (C15E, cold-heading steel) 1.4034 (X46Cr13) 1.0503 (C45, quenched and tempered steel)

Hardness specifications

heat-treated (heat-treatable steel 25CrMo4/42CrMo4) hardened / case-hardened Washer hardness class 200 HV / 300 HV (ISO 7089/7090) Threaded pin hardness class 14 H – 45 H (DIN 913/553) spring-hard (spring steel 1.4310)

Surfaces & Coatings

electrogalvanized thick-film passivated hot-dip galvanized uncoated Zinc-lamella system (Delta/Geomet/Dacromet) nickel-plated chrome-plated burnished phosphated

Threads & Dimensions

M2 M2.5 M3 M4 M5 M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 M33 M36 M39 M42 M45 Metric fine thread Left-hand thread (LH) UNC (Unified Coarse, inch) Whitworth thread (BSW) G pipe thread, cylindrical (BSP) R / Rp / Rc (tapered pipe thread)

DIN standards

DIN 933 DIN 912 DIN 931 DIN 2510 DIN 125 DIN 934 DIN 2510-5 DIN 84 DIN 267-13 DIN 125-1 DIN 267 DIN 976-1 DIN 963 DIN 571 DIN 975 DIN 127 DIN 6912 DIN 7984 DIN 985 DIN 938 DIN 939 DIN 267-10 DIN 965 DIN 603 DIN 7981 DIN 1587 DIN 471 DIN 914 DIN 444 DIN 9021 DIN 7985 DIN 472 DIN 7980 DIN 7504 DIN 6797 DIN 916 DIN 94 DIN 913 DIN 7990 DIN 601 DIN 2510-3 DIN 976 DIN 7337 DIN 315 DIN 580 DIN 910 DIN 17440 DIN 582 DIN 128 DIN 7

DIN-EN / DIN-ISO / DIN-EN-ISO & International Standards

DIN EN 10204 DIN EN ISO 4014 DIN EN ISO 4017 DIN EN 10269 AD 2000 DIN EN ISO 4762 DIN EN ISO 4032 DIN EN 1515-1 DIN EN ISO 3506-1 DIN EN ISO 10642 DIN EN ISO 7089 DIN EN 14399 DIN EN ISO 10684 DIN EN ISO 898-1 EN 26157-3 DIN EN 14399-4 DIN EN ISO 7090 DIN EN ISO 8752 DIN EN ISO 7093-1 DIN EN 1515-4 DIN EN ISO 16426 DIN EN ISO 3269 DIN EN ISO 7380 DIN EN ISO 148-1 DIN EN ISO 1207 DIN EN 14399-6 DIN EN 10272 DIN EN 10088-3 DIN EN ISO 14583 DIN EN ISO 4759-1

Certifications & Regulations

DIN EN 10204 (Test Certificates, Certificate Levels 3.1 / 3.2) DIN EN 14399 / DIN EN 15048 (Steel Construction Sets HV / HR / SB) AD 2000 (Pressure Vessel Regulations)

Brands in Our Product Line

SPAX FLAKO KORREX Nord-Lock Helicoil Schnorr Ensat Teckentrup Lindapter

ECLASS Classification

Fasteners entirely within ECLASS Segment 23 (Machine Elements, Fasteners, Mounting Hardware, Fittings). The core product groups are 23-11 (screws, nuts), 23-09 (washers, rings), 23-10 (bolts, split pins, wedges), and 23-12 (pins, nails, hooks, rivets).
Name ECLASS 16.0 ECLASS 12.0 ECLASS 7.1
Spring Washer23-09-03-0723-09-03-0723-09-03-07
Spring ring23-09-03-0523-09-03-0523-09-03-05
Conical spring washer23-09-03-0823-09-03-0823-09-03-08
Wedge lock washer23-09-03-1323-09-03-13
Plain washer round23-09-05-0123-09-05-01
Product Line: Disc, Ring, Spacer (unspecified)23-09-07-9023-09-07-90
Washer, ring, supporting element (other, unspecified)23-09-90-9023-09-90-9023-09-90-90
Cylinder Pin23-10-01-0923-10-01-09
Grooved pin23-10-01-1223-10-01-12
Clamping Sleeve23-10-03-0223-10-03-02
Split pin (cotter pin)23-10-04-0123-10-04-0123-10-04-01
Sleeve, bushing (unspecified)23-10-06-9023-10-06-9023-10-06-90
Machine screw, flat washer face, external drive23-11-01-0123-11-01-0123-11-01-01
Machine screw, flat washer face, internal drive23-11-01-0223-11-01-0223-11-01-02
Machine screw, non flat washer face23-11-01-0323-11-01-0323-11-01-03
Machine screw with a head without a drive23-11-01-1923-11-01-1923-11-01-19
Machine screw with head (unspecified)23-11-01-9023-11-01-9023-11-01-90
Locking Tooth/Ribbed Screw23-11-01-0523-11-01-05
Fit bolt with head23-11-01-1423-11-01-1423-11-01-14
Lock screw23-11-01-0723-11-01-07
Tapping screw, flat washer face, internal drive23-11-02-0223-11-02-02
Tapping screw, non flat washer face23-11-02-0323-11-02-03
Self-tapping screw, flat-head, external drive23-11-02-0123-11-02-01
Self-tapping screw (unspecified)23-11-02-9023-11-02-90
Stud metal end, stud bolt (without drive)23-11-03-0323-11-03-0323-11-03-03
Socket set screw, shank screw (with drive)23-11-03-0523-11-03-05
Threaded rod, threaded piece23-11-03-0123-11-03-0123-11-03-01
Headless expansion screw23-11-03-0423-11-03-04
Machine screw without head (unspecified) not specified)23-11-03-9023-11-03-9023-11-03-90
Screw for wood, non-flush-mounted23-11-04-0323-11-04-03
Wood screw, flat-head, external drive23-11-04-0123-11-04-01
Wood screw, flat-head, internal drive23-11-04-0223-11-04-02
Screw for plastic, flat-head, internal drive23-11-05-0223-11-05-02
Screw for plastic, non-flush-mounted23-11-05-0323-11-05-03
Screw for plastic, flat-head, external drive23-11-05-0123-11-05-01
Screw (special shape, unspecified)23-11-06-9023-11-06-9023-11-06-90
Screw with anchor end23-11-06-0623-11-06-0623-11-06-06
Screw hand tighten23-11-06-0123-11-06-0123-11-06-01
Shaft screw23-11-06-1323-11-06-1323-11-06-13
Hollow screw23-11-06-0223-11-06-02
Window Construction Screw23-11-06-1923-11-06-1923-11-06-19
Scaffolding bolt, scaffolding anchor23-11-06-2223-11-06-2223-11-06-22
Nut, flat washer face with drive23-11-07-0223-11-07-02
Flange, flat-seated, with clamping piece, with drive23-11-07-0323-11-07-03
Nut hand tighten11/23/07-1011/23/07-1023-11-07-10
Mother (unspecified)11/23/07/9023-11-07-9023-11-07-90
Turnbuckles and coupling nut23-11-07-1723-11-07-17
Mother Without Motivation11/23/07-1611/23/07-16
Mother, not lying flat11/23/07-1523-11-07-15
Grooved screw, flat-head, internal drive23-11-10-0223-11-10-02
Sealing screw, flat-seating plug with thread23-11-11-0123-11-11-01
Threaded plug, stopper, or cap (not specified)23-11-11-9023-11-11-9023-11-11-90
Sealing screw, non-contacting plug with thread23-11-11-0223-11-11-02
Machine screw, flat washer face, external drive, with nut23-11-12-0223-11-12-02
Machine screw with nut (unspecified)23-11-12-9023-11-12-9023-11-12-90
Weld-on fitting with nut23-11-12-0123-11-12-0123-11-12-01
Machine screw, non flat washer face, with nut23-11-12-0423-11-12-04
Cap without thread23-11-13-0123-11-13-01
Screw, Nut, and Washer Product Line23-11-14-0623-11-14-06
Screw Mounting Kit23-11-14-07
Screw and Nut Assortment (unspecified)23-11-14-9023-11-14-90
Assortment of Nuts23-11-14-0423-11-14-04
Threaded Insert for Metal23-11-15-0123-11-15-01
Threaded insert (not specified)23-11-15-9023-11-15-90
Threaded Insert for Plastic23-11-15-0323-11-15-03
Threaded Insert for Wood23-11-15-0223-11-15-02
Screw, nut (other, unspecified)23-11-90-9023-11-90-9023-11-90-90
Pipe Rivet23-12-04-0723-12-04-07
Full rivet23-12-04-0123-12-04-0123-12-04-01

Can't find what you're looking for?

With a network of over 400 specialized suppliers and decades of procurement expertise, Zilken ensures that customers always receive the right fastener—whether it’s a standard part compliant with DIN and ISO standards or a custom-made item that is difficult to source.

C-Part Management at INFICON: From 108 Suppliers to a Single System

Zilken is taking over INFICON’s entire C-part management: 1,246 items, one point of contact, one system.

This is how Zilken streamlines the supplier landscape in the Fasteners a cohesive whole.

Case Structured industrial supply chain with consolidated manufacturer structure

Packaging & Sets

Whether it’s assembly kits based on a bill of materials or custom screw sets, Zilken handles picking, packing, and labeling directly in accordance with the production logic. The parts arrive where they’re needed, ready for assembly. This way, kitting with the right sets becomes an integral part of a more efficient procurement and assembly process.

One-stop procurement

Zilken not only handles the delivery of individual items, but also coordinates bill of materials, suppliers, and logistics for complex procurement requirements—from individual parts to assembled kits. This makes Fasteners of an integrated C-parts and MRO portfolio.

FAQ

Can you supply high-strength, heat-resistant bolted joints for power plant and industrial plant construction?

Yes. We supply bolted connections with expansion shanks in accordance with DIN 2510, as well as fasteners made of hot-rolled and high-strength steels in accordance with DIN EN 10269—such as 21CrMoV5-7 (1.7709)—for elevated temperatures in turbine, boiler, and plant engineering. We tailor the material, strength, and matching nuts in accordance with DIN 2510-5 to your design, and provide a material certificate upon request.

Do you provide prestressed connections for steel construction?

Yes. For load-bearing connections that are designed to be preloaded, we supply complete sets in accordance with DIN EN 14399 (HV and HR systems), consisting of a bolt, nut, and washer; for connections not designed to be preloaded, we comply with DIN EN 15048 (SB).

Do I also receive a material certificate for pressure vessels with the fasteners?

Yes. We supply fasteners with test certificates in accordance with DIN EN 10204, specifically inspection certificate 3.1 3.2, and meet the requirements of the AD 2000 pressure vessel regulations. This ensures that the traceability of materials and mechanical properties is documented throughout the entire supply chain.

Do you offer corrosion- and acid-resistant fasteners?

Yes. In addition to A2 (1.4301) stainless steel fasteners, we supply the more corrosion-resistant A4 grades (1.4401, 1.4404, 1.4571) for chemical, marine, and hygienically demanding environments. We source higher-alloy specialty materials specifically according to specifications for special media requirements.

Do you also carry wall plugs and anchors?

Yes, we’re also a leader in this area. In addition to screws, nuts, and washers, we also supply dowels, expansion anchors, and anchors. We’d be happy to source the right fastening solutions for your specific application. This way, you get fastening and joining technology all from one source—drawn from our own experience and through our network of suppliers.

Can you source special screws and special threads according to our specifications?

Yes, that is our core expertise. In addition to standard sizes, we source specialty screws, fine-pitch threads, and custom designs specifically according to your specifications or drawings. As a systems and process partner, we tailor our procurement—and, if desired, our inventory management with safety buffers—to your needs, drawing on our experience and our established network of suppliers.

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