Specification Brand : WIDIA-GTD BulletPoint1 : Price For: Each Tap Dimension Type: Inch Tap Material: High Speed Steel Tap Style: Straight Flute (Hand) Number of Pieces: 1 Thread Direction: Right Hand Tap Finish: Uncoated Tap Chamfer: Taper Item: Tap Standards: ANSI, Unified and American National Threads Shank Dia.: 0.318" Tap Size: 5/16" Thread Length: 1-1/8" Pitch: 18 Overall Length: 2-23/32" BulletPoint2 : Number of Flutes: 4 Tap Thread Type: UNC Pitch Diameter Limit: H3 List Number: 5303 Country of Origin (subject to change): United States BulletPoint3 : Bottoming Taps have 1-2 threads of lead, for threading close to the bottom of a blind hole. BulletPoint4 : High Speed Steel. Ground Thread. BulletPoint5 : Please note that not all bottoming taps are flattened at the end. ExternallyAssignedProductIdentifier1 : 662355140925 ExternallyAssignedProductIdentifier2 : 0662355140925 ItemName : Hand Tap, Taper, 5/16-18, Uncoated, 4 Flt ItemPackageQuantity : 1 ItemTypeKeyword : hand-threading-taps Manufacturer : WIDIA GTD Material : High Speed Steel MeasurementSystem : Metric ModelNumber : 14092 NationalStockNumber : 3040-01-414-4036 NumberOfItems : 1 PartNumber : 14092 ProductDescription : ' Tap, Tap Style Straight Flute (Hand), Tap Dimension Type Inch, Tap Size 5/16 In., Pitch 18, Tap Chamfer Taper, Number of Flutes 4, Pitch Diameter Limit H3, Tap Material High Speed Steel, Tap Finish Uncoated, Number of Pieces 1, Thread Length 1-1/8 In., Right Hand, Tap Thread Type UNC, Shank Dia. 0.318 In., Overall Length 2-23/32 In. ' ProductSiteLaunchDate : 2004-11-09T05:00:01-00:00 UnspscCode : 27110000