fastener sk-kd 5
DESCRIPTION
oTRANSCRIPT
FASTENERS
Teknik Kendaraan RinganSemester 1st Class X
Dasar Kompetensi KejuruanSK-KD 5TH
DIAGRAM ALUR PENCAPAIAN KOMPETENSI
The Nuts and bolts we all use
Teknologi dan Rekayasa
SYSTEMS OF THREAD MEASUREMENT
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ENGLISH SYSTEMSystem of thread measurement uses a fractional system to determine thread diameter when 1/4” or larger.Each diameter increases by 1/16” up to about 1/2” Thread diameters of 1/4”, 5/16”, 3/8”, 7/16” 1/2” are most commonly used
1/4 5/16 3/8 7/16 1/2
ENGLISH SYSTEMThese diameters are the most commonly used.
SYSTEMS OF THREAD MEASUREMENT
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METRIC FASTENERS SIMILAR TO ENGLISH SYSTEM THREAD DIAMETER IS
EXPRESSED IN MILLIMETERS (mm)
THREAD TYPE IS DIFFERENT THREAD SIZE IS DETERMINED BY
MEASURING THE DISTANCE IN MILLIMETERS FROM CREST OF ONE THREAD TO CREST OF NEXT ONE.
Example 1.00, 1.25, AND 1.50
Thread Designations for Metric
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To write out Thread designations for Metric bolts first you give the Diameter then the Thread Pitch then the Length. Only this time it should be in millimeters
D X TPI X L M12 X 1.50 X 60 You can always
add the Class (grade) of the bolt. Such as 4.8, 8.8, 10.8
Metric Recommended Bolt Torque
DiameterRecommended Torque (N*m)
Class 8.8 Class 10.9
5 7 96 12 168 30 40
10 55 7512 100 13514 160 21516 245 33520 480 650
STUD STRENGTH
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STUD REMOVAL
One way is to jam two nuts together and then put the Wrench on the inside one and turn it out.
How to measure a bolt
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A. Pitch C. Diameter D. Thread length E. Screw lengthF. Threads per inch G. Head size
THREAD PITCH
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From 0-1 shows that you have 7 TPI Threads per inch. (US standard)
Metric you measure the pitch, from top of thread to top of thread like # A
Thread pitch gauge
Used to find how many threads in an inch
come in metric and standard Screw pitch gauge common name
of this
Thread Designations
Teknologi dan Rekayasa
To write out Thread designations for US bolts first you give the Diameter then the Thread Pitch then the Length
D X TPI X L ½ X 13 X 2 ½ Take a bolt and give me
the Thread designations for it.
You can always add the grade of the bolt. Such as grade 5
Thread Designations
Teknologi dan Rekayasa
Next we measure the Thread Pitch.
D X TPI ½ X 13
Then we measure the Length. D X TPI X L ½ X 13 X 2 ½
Thread Designations for Metric
Teknologi dan Rekayasa
To write out Thread designations for Metric bolts first you give the Diameter then the Thread Pitch then the Length. Only this time it should be in millimeters
D X TPI X L M12 X 1.50 X 60 You can always add the Class
(grade) of the bolt. Such as 4.8, 8.8, 10.8
SPECIAL FASTENERS
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This is a normalHex Head Cap Screwwith a flat washer andhex nut.
Bolts
Eye Bolts
Eye Nuts
WASHERS
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Washer is ………………………………………..
LOCK WASHERS
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Internal Tooth lock washerExternal Tooth
lock washerCountersunkSplitLock washer
SAEFlatwasher
USSFlatwasher
Fender Washer
Nuts
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Socket Head fasteners
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Machine Screws
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Tips
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Drywall
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Rivets, Pins & Clips
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Name the different clips
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Internal snap ring
Pal nutExternal snap ring
Grease Zerk
Blind RivetsWing Nut E-ClipSplit or Roll
PinHitch pin clip
CotterPin
Set Screw
Stud
Thin or Jam nut
Speed nuts Lock
nut
Thread lockers
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Anaerobic cures after the components are put together
Locks Bolts & Studs against Vibration loosening
Four colors Use on screws up to ¼ - Purple # 242 Able to Remove ¼ to 3/4" Bolts -
Blue # 271 High Strength Hard to Remove
3/8 to 1" - Red # 290 Wicking Grade for Preassembled
Parts - Green # could be different due to size of bottle
Clean and dry all parts removing dirt, oil, grease and/or any foreign material
BOLT PAINTING
Teknologi dan Rekayasa
Many cars left the factory with painted bolts, nuts and other assorted fasteners.
The problem for the garage restorer is that these freshly repainted pieces chip and mar easily.
So do what the factory did: Bake the paint on. An old toaster oven is perfect for this task--just set the oven to 325 degrees and let the parts bake for a half-hour.
This process sometimes changes the color of paints
Teknologi dan Rekayasa
BIBLIOGRAPHY:
PHS AUTO
Thanks very much
Presented by Aloysius SudibyoSMK Negeri 1 Magelang