CE WH PHG 250 1108 Copyright 2008 by Wurth 14 0060 Metric Studs Prefix 250 Grade 88 DIN 939 Unplated steel threaded at both ends Exhaust Hardware Specialty Studs Step Studs Prefix 251 Grade 5 Unplated Steel Standard Studs Prefix 252 Grade 5 Unplated Steel UNC x UNF and UNC x UNC Flange Nut Prefix 315 Grade 10 Steel ZincPlated R e d u c e d Wren ch Size JI SB Standard Meets Japanese OEM exhaust specifications Slotted Locking Hex Nut Prefix 365 Grade 5 Steel DIN 14 440 Copper Plated Standard Wrench Size Heat resistant from 70 to 400 C Slotted Locking Hex Nut Prefix 366 Grade 5 Steel DIN 14 440 Copper Plated Reduced Wrench Size Heat resistant from 70 to 400 C