Description
ISO 7089 Washer 6 x 12 — BOLTON SKU 53222.
About the ISO 7089 Washer 6 x 12
Held under the catalogue reference iso_7089_washer_6x12, this is a plain Form A washer made to ISO 7089 in the nominal size 6 / 12 mm combination the name describes. The standard fixes the geometry: for nominal size 6 the inside diameter is 6.4 mm, the outside diameter is 12 mm and the thickness is 1.6 mm, so the washer clears an M6 fastener and presents a 12 mm bearing face against the joint. ISO 7089 is listed as the equivalent of DIN 125-1 and DIN 125-2, which is why the two callouts are used interchangeably on drawings and BOMs. The standard admits several material and hardness options — steel at 140 HV, 200 HV or 300 HV, A2 and A4 stainless, brass, aluminium and plastic — and the material for this line is confirmed against your specification at quotation.
Key specifications
| Attribute | Value |
|---|---|
| Standard | ISO 7089 (plain washer, Form A) |
| Equivalent standard | DIN 125-1 / DIN 125-2 |
| Nominal size | 6 (for M6 fasteners) |
| Inside diameter (d1) | 6.4 mm |
| Outside diameter (d2) | 12 mm |
| Thickness (h) | 1.6 mm |
Typical applications
M6 is the workhorse size for equipment frames, bracketry, panel and door hardware, cable-tray fixings and machine guarding, and the 12 mm outside diameter is the standard-series face used where the hole is a normal clearance hole rather than an oversize or slotted one. The 1.6 mm thickness makes it noticeably stiffer than the small-size washers, so it resists dishing when the fastener is torqued against sheet or extrusion. Where a larger bearing area is needed over slots or soft materials, an oversize washer to ISO 7093 is the usual alternative to this reference.
Supplied by BOLTON Technical Equipment Supplies against request for quotation. Add this item to your RFQ basket to request pricing, lead time and documentation requirements (e.g. CoC, datasheets or test reports where applicable).
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