F STENERS Two metals that be joined to gether M e th ode : 1. Welding 2. Riveting 3. Inte rf er ence fi t / press fit 4. Thr eaded fas teners ( screw, hex bol t & nut ) + accessories
FASTENERSTwo metals that be joined togetherMethode
:WeldingRivetingInterference fit / press fitThreaded fasteners (
screw, hex bolt & nut ) + accessories
Imperial size fasteners often use a number of slash marks on the
head to identify the grade. To determine the grade of a fastener,
you can usually count the number of slash marks and add two. For
example, Figure below shows a grade 5 bolt.
The tensile strenght of bolt is graded by the numbering system
1, 2, 4, 5, 7 and 8.Grade 5, 7, dan 8 are identified on the head of
boltNOTE : Grades 1, 2, and 4 have no identification marking
because of their low tensile strength
Metric size bolts use a numbering system that identifies the
class of the bolt.
Tensile strength increases as the number stamped on the bolt
head increases.
There are four designations for Unified Screw Thread: Unified
National Coarse (UNC) Unified National Fine (UNF) Unified National
Extra Fine (UNEF) Unified National Special (UNS).
Unified Screw Thread has a 60 angle, with a rounded root and a
rounded or flat crest. UNC and UNF threads are the most used
Beam membaca defleksi jarum penunjuk (pointer) yang dipasang
kepala torque wrenchDial menunjukkan pada suatu dial bila torsi
yang diinginkan sudah dicapai.Click bila wrench mengeluarkan bunyi
klik, itu berarti torsi yang ditetapkan sudah tercapai.
