Short answer: stamped washers and shims are flat, thin bagian dicitak used for spacing, load distribution, tolerance compensation, and preload adjustment in mechanical assemblies. They are typically made from low-carbon steel, stainless steel, spring steel, brass, or plastic, in thicknesses from 0.05 mm to 6 mm.
This guide is for design engineers and sourcing professionals who need flat stamped washers, shims, spacers, or feeler gages for precision assemblies, bearing preload, or structural alignment.
Submit your washer or shim drawing with ID, OD, thickness, flatness, and material requirements through the RFQ form. For flatness specifications, see stamped part flatness and warpage control.
nyitak vs other washer production methods
| Method | Thickness range | Tolerance | Tooling cost | Economic volume |
|---|---|---|---|---|
| nyitak (paeh progresif) | 0.1-6 mm | plusmn0.05-0.15 mm | USD 3,000-12,000 | 10,000+ |
| nyitak (paeh gabungan) | 0.1-3 mm | plusmn0.03-0.08 mm | USD 2,000-8,000 | 1,000-50,000 |
| Laser cutting | 0.5-10 mm | plusmn0.10-0.20 mm | None (per-part) | 1-500 |
| Waterjet cutting | 1-25 mm | plusmn0.15-0.30 mm | None (per-part) | 1-200 |
| Fine blanking | 0.5-6 mm | plusmn0.01-0.03 mm | USD 8,000-25,000 | 50,000+ |
Biasa washer and shim types made by nyitak
- Flat washers (plain): DIN 125, DIN 9021, SAE, USS standard sizes. paeh progresif with automatic sorting.
- Spring washers (curved, wave, Belleville): curved or conical profile stamped and heat-treated for spring properties. ASTM B637 or similar.
- Shims (laminated, solid): precision-thickness shims for bearing alignment, motor mounting, gear preload. Laminated shims use peelable layers of 0.05-0.10 mm.
- Lock washers (split, tooth): split ring or internal/external tooth lock washers, case-hardened.
- Sealing washers: stamped metal with bonded rubber or PTFE insert.
- Custom shim plates: contoured or stepped shims for structural alignment in machinery, otomotif, or aerospace.
Tolerances and flatness
Stamped washer flatness depends on material thickness, temper, and nyitak method:
- Standard nyitak: flatness 0.10-0.30 mm per 25 mm diameter
- With coining or flattening station: flatness 0.03-0.08 mm per 25 mm
- Fine blanked: flatness 0.01-0.03 mm for thin materials
- ID/OD concentricity: typically plusmn0.10 mm, can be plusmn0.03 mm with paeh gabungan
- Thickness tolerance: plusmn0.03-0.10 mm for most stamped shims
Bahan and finish selection
Washer and shim material depends on the load, corrosion environment, spring requirement, and whether the part is used as an electrical kontak or a mechanical spacer. Low-carbon steel is economical for general use. Stainless steel is common when corrosion resistance matters. Spring steel, 301 stainless, phosphor bronze, or beryllium copper may be used when the washer must provide preload or kontak force.
- Low-carbon steel: economical, easy to plate, good for general spacers and load-distribution washers.
- Stainless steel: 304 and 316 resist corrosion; 301 can be specified for spring washer behavior.
- Brass and copper: used for conductivity, grounding, and softer bearing surfaces.
- Spring steel: heat treatment may be needed after nyitak, followed by black oxide, zinc, or phosphate finish.
- Plastic or fiber shims: useful for electrical isolation or low-load spacing, but not a substitute for high-load metal shims.
RFQ checklist for custom washers and shims
For standard washers, send the DIN, ISO, SAE, or customer standard number. For custom shims, send a drawing with ID, OD, slot geometry, thickness, material, flatness, burr direction, hardness, finish, and quantity by release. If washers are packed for automated feeding, include orientation, cleanliness, and packaging requirements.
Related pages that help define the print include the nyitak logam tolerances guide, fine blanking guide, burr control guide, and first article inspection checklist.
FAQ
What is the most economical way to produce 50,000 flat washers?
How tight can stamped shim thickness tolerance be?
Can you stamp washers with a bonded rubber seal?
Kirim your washer or shim RFQ
Submit your drawing or specification with ID, OD, thickness, flatness, material grade, quantity, and any standard (DIN, SAE, ISO) through the RFQ form.