Description
Flat Washer M6, ID 6.4 x OD 12 x 1.6 Thk, Stainless Steel A2, DIN 125 A / ISO 7089 — BOLTON SKU 53333.
About the Flat Washer M6 ID 6.4
Ordered as washer flat M6 ID 6.4 x OD 12 mm, this is a plain washer from the normal series covered by ISO 7089 and its DIN 125 A equivalent. The bore measures 6.4 mm, the outside diameter 12 mm and the nominal thickness 1.6 mm, which is the standard ISO 7089 size row for nominal size 6.4 — the row that pairs with an M6 thread. ISO 7089 covers plain washers of product grade A with a flat bearing face, no chamfer and no internal or external teeth. The material is A2 austenitic chromium-nickel stainless steel, so the washer is supplied bright and uncoated rather than zinc plated. Its function in a bolted joint is to spread the clamping load of the nut or screw head across a wider bearing area and to protect the joint face from scoring as the fastener is turned down.
Key specifications
| Standard | DIN 125 A / ISO 7089, plain washers, normal series |
|---|---|
| Nominal size | 6.4 (for M6 thread) |
| Inside diameter (d1) | 6.4 mm |
| Outside diameter (d2) | 12 mm |
| Thickness (h) | 1.6 mm nominal |
| Product grade | A |
| Material | A2 austenitic stainless steel |
| Form | Flat, plain, unchamfered |
Typical applications
Used under M6 nuts and screw heads on stainless bolted assemblies where the bearing face must be protected and the clamp load spread. Because the washer is A2 stainless rather than plated carbon steel, it can be matched to A2 M6 screws and nuts so the whole joint stays within one austenitic stainless family. The 12 mm outside diameter suits normal-series clearance holes rather than the wider bearing area of a large-series washer.
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).
Browse more in MIL-Spec & Coded Fasteners.
Reviews
There are no reviews yet.