Description
Plain Washer 4×9, ISO 7089 M4-A4 — BOLTON SKU 72447.
Supplied by BOLTON Technical Equipment Supplies against request for quotation. BOLTON sources technical equipment and components for defence, aerospace, UAV/UAS, MRO and industrial programmes across the UAE, Saudi Arabia and Australia.
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The smallest size in this ISO 7089 group, with a 4 mm bore and 9 mm outside diameter, sized to sit under M4 screw and nut faces. Plain washers at this scale are used to protect finished panel surfaces from being scored as the fastener is run down.
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