198 EACH - 4340 ALLOY STEEL ROUND BAR PER SAE AMS6409 OR 6414, PREHARDENED TO HRC 38-41, 3.0 INCH DIAMETER, 5.0 + .125 INCH LENGTH. Merchant Quality and Free Machining Grades are Not Allowed. - Contra... 198 EACH - 4340 ALLOY STEEL ROUND BAR PER SAE AMS6409 OR 6414, PREHARDENED TO HRC 38-41, 3.0 INCH DIAMETER, 5.0 + .125 INCH LENGTH. Merchant Quality and Free Machining Grades are Not Allowed. - Contractor must mark specific Heat numbers on each article if material lot contains multiple Heat numbers To include contract data prepared and delivered in accordance with CONTRACT DATA REQUIREMENTS LIST (DD Form 1423) which is attached hereto as Exhibit A (CN 2) *INSPECTION REQUIRED*