CAIRO - Egypt's state grains buyer, the General Authority for Supply Commodities (GASC), said on Tuesday it bought 235,000 metric tons of Russian wheat in an international tender.

The purchase comprised 175,000 metric tons for Sept. 15-30 shipment, as well as 60,000 metric tons for Oct. 1-15 shipment, GASC said.

Traders gave the following breakdown of the purchase in dollars per ton:

Supplier QTY/KM Origin Shipment FOB Freight C&F T Grain 60 Russian Sept. $262 $14.50 $276.50 Flower 15-30 Grain 60 Russian Sept. $262 $16.25 $278.25 Flower 15-30 Grain 55 Russian Sept. $262 $17.69 $279.69 Flower 15-30 Grain 60 Russian Oct. $265 $14.50 $279.50 Flower 1-15

Only four trading houses presented offers to the GASC in the tender, an unusually low number of participants for tenders from one of the world's most important customers for wheat sellers.

The main reason was believed to be the delayed payment terms offered by the GASC, as well as concern that ocean shipping from Russia may face disruption after a Ukrainian attack on a Russian tanker over the weekend.

(Reporting by Sarah El Safty and Michael Hogan; editing by David Evans)