E5155/16NO1
Straight flute hand tap NO1 with a 6-8xP taper lead, for Unified National Coarse thread UNC 5/16" with 18 TPI and 2B class of fit, dimensions according to ISO 529 standard with 8.0mm shank and 6.3mm square drive, HSS with bright finish for 1.5xD through or blind hole threading in free machining and plain carbon steel and copper or copper alloys
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Material: HSS
Lenxth x Diameter Ratio: 1.5
Overall Length (OAL): 2.8346
Connetion Diameter: 0.315
Tool Direction: Right
Diameter Size: 5/16
Thread Diameter - in: 0.3125
Thread Diameter - mm: 7.938
TPI: 18.0
Thread Form: UNC - Unified Coarse
Shank: Cylindrical shank with Square
Usable Length: 1.1417
Grade: Bright
EDP: 154014
EAN: 7320760154014
MFG Part Number: 5976981