Metal Spring & Locking Fasteners
Metal Spring & Lock Washers
Sucatec supplies precision-engineered metal spring and lock washers for demanding bolted assemblies across automotive, rail, electrical and industrial engineering applications.
The range covers teethed, toothed, conical, wave, grower, sperrkant and Twin-Lock® systems in carbon steel, stainless steel AISI 304/316, bronze, aluminium and specialist alloys — to DIN, ASME, UIC and other international standards.
Fan & Tooth Washers
Teethed & Toothed Washers
Teethed Washers
Fan-type external, internal, countersunk, narrow-band and internal-external teethed spring washers. Carbon steel, stainless steel AISI 304/316, and bronze. M2–M30.
DIN 6797 A / J / VToothed Washers
External and internal toothed spring washers to DIN 6797 and ASME B18.21.1. Carbon steel and stainless steel AISI 304. Metric and inch sizes.
Conical Spring Systems
Conical Washers
Conical Elastic Washers
Disc spring washers providing high clamping force for vibration-resistant bolted joints. Carbon steel, stainless steel AISI 304/316 and bronze CuSn8. M2–M36.
CS N FE 25-511 MConical Contact Washers
Knurled conical washers delivering both spring load and electrical or mechanical contact on both bolt and workpiece faces. Nine material options. M3–M20.
Sperrkant MConical Sperrkant Washers
Conical spring washers with radial serrations on both outer and inner faces for maximum anti-loosening friction. Ten material variants. M4–M24.
Wave & Split Spring Washers
Wave & Grower Spring Washers
Convexed Washers
Domed elastic spring washers providing uniform resilient clamping force under bolt heads. Carbon steel and stainless steel AISI 304/316. M2–M16.
DIN 137 BCorrugated Washers
Wave-form spring washers for axial spring force and vibration resistance. Carbon steel, stainless steel and bronze. M3–M24.
DIN 127 B / DIN 7980 / ASMEGrower (Spring) Washers
Single-coil split spring washers to DIN 127 B, DIN 7980, ASME B18.21.1 and NF E 25-515. Carbon steel, stainless steel, bronze, monel, aluminium and silicon bronze. M2–M52.
DIN 6905Curved Coiled Washers
Curved split spring washers in carbon steel for low-profile spring clamping in standard bolt assemblies. M2.5–M8.
Specialist Systems
Specialist Washers & Caps
Railway Spring Washers
Heavy-duty single, double and triple coiled spring washers for railway track fastening per UIC 864, AREA 1967 and NF F 50-001 standards. Metric and inch sizes.
DIN 46288 A / BElectric Terminal Washers
Rectangular spring clamp washers for securing electrical wire terminals under bolt heads. Carbon steel, hardened 400–490 Hv. M3–M6.
DIN 6319 C / D / GSpherical & Conical Seat Washers
Spherical washers (C) and conical seat washers (D/G) for compensating angular misalignment in structural and precision bolted joints. M6–M48.
Grower Twin-Lock®Grower Twin-Lock® Washers
Two-piece wedge-locking washer system with camber angle exceeding the thread pitch angle. Standard and large series in carbon steel 27CrMnB5 and stainless steel AISI 316L. M6–M20.
DIN 443 A / BSealing Push-In Caps
Conical (Type A) and cylindrical (Type B) steel sealing caps for closing holes, tube ends and panel openings. Ø 8–63 mm. Steel DC 03.
Materials Available
| Material | Standard | Typical Hardness | Typical Application |
|---|---|---|---|
| Carbon Steel C 60 | EN 10132 / EN 10016-2 | 350–490 Hv | General engineering — teethed, toothed, conical, grower and sperrkant washers. |
| Stainless Steel AISI 304 (A2) | EN 10088-2 / EN 10088-3 | — | Corrosion-resistant applications in food, marine and outdoor environments. |
| Stainless Steel AISI 316 (A4) | EN 10088-2 / EN 10088-3 | — | Elevated corrosion resistance for chemical and coastal environments. |
| Bronze CuSn8 | EN 1652 / EN 12166 | — | Non-magnetic, electrically conductive applications; fine-pitch and instrument assemblies. |
| Spring Steel 38 Si 7 | EN 10089 | 43–49 HRc | Railway track fastening per UIC 864 — high-load, high-vibration applications. |
| Carbon Steel 27CrMnB5 | EN 683-2 | min. 485 Hv | Grower Twin-Lock® wedge-locking systems demanding very high hardness. |
| Monel K-500 | DIN 17744 | — | Marine, subsea and chemical plant assemblies requiring high corrosion and strength. |
| Aluminium AW-7075 | EN 573-3 | — | Lightweight aerospace and high-performance structural assemblies. |
| Silicon Bronze CDA 65100 | ASTM B96 / B98 | — | Marine hardware, architectural and electrical grounding applications. |
Applications
Vibration-Critical Assemblies
Teethed, sperrkant and Twin-Lock® washers for engine, chassis and drivetrain bolted joints subject to continuous vibration and dynamic loading.
Railway Track Fastening
Heavy-duty UIC 864 single, double and triple coiled spring washers for railway track and infrastructure bolted connections.
Electrical Contact & Terminal
Conical contact, knurled and electric terminal washers for reliable electrical contact, grounding and wire terminal retention.
Structural & Precision Joints
Spherical and conical seat washers for compensating angular misalignment in structural steel and precision machinery bolted joints.
Corrosion-Resistant Fastening
Stainless steel AISI 304/316, bronze, monel and silicon bronze washers for marine, chemical plant and offshore applications.
Anti-Loosening Systems
Grower, corrugated, convexed and toothed spring washers for general anti-loosening in industrial machinery and equipment assemblies.
Need metal spring or lock washers?
Contact Sucatec for teethed, conical, grower, Twin-Lock® and specialist metal washers across all standard materials and sizes. Technical data available on request.