#ThreadedRods4Beginners

Legenda:

Pitch: coarse thread #UNC
fine thread #UNF
8pitch #8UN
#AcmeThread

Lenght:
Overall length
1st thread to 1st thread
It can be
metric: 20mm - 2m
SAE: 1/2inch - 56inch

Diameter
metric: m6 - m48 (in mm)

/1

#ThreadedRods4Beginners

metals:
grade #B7 #steel 4 high temperature
Low carbon steel #ASTM #A307 #1008s #1018s #1022s
#F15554 for anchoring structural support in concrete
#grade36 (yield #36ksi) #grade55 yield #55ksi #grade105 (yield #105ksi)
#ASTM #A193_B7 #ChromeMolybdenium
/2

#ThreadedRods4Beginners

#ASTM #A193_B7 is one of the strongest materials and preferred where high temperatures and pressures are achieved

#SAE #J429 #Grade2 #Grade5 #Grade8
#Grade8 is the strongest in its class has the highest tensile strength (> #A193_B7)

/3

#ThreadedRods4Beginners

#ASTM #A449
Medium strenght typical in engineering. Anchor bolts are common fastners made with this.

/4

#ThreadedRods4Beginners

Grades 4 #Stainless #Steel #THreadedRods

#304SS 18% #chromium 8% #nickel max 0.08% carbon

#316SS highly corrosion resistant. This is one of the highest grades of `normal` stainless steel

/5

#ThreadedRods4Beginners

Grades 4 #Stainless #Steel #THreadedRods

#18_8grade 18% chromium 8% nickel
Used where there is constant moisture

#ASTM #A193_B8 #B8 bolts made from #304SS
#Class1 #75k #PSI
#Class2 #125k #PSI

/6

#ThreadedRods4Beginners

#Tensile #Strength
The Maximum sustainable load before failing is #TensileStrength also called #Ultimate #TensileStrength Usually about 85% of a materials strenght is used for non destructive testing

/7

Standards

#DIN975 for threaded rods

Some examples:
#M18 rods 2.5mm / thread mass 1650kg / 1000 (rods)
#M20 rods 2.5mm / thread mass 2080kg / 1000
#M24 rods 3.0mm / thread mass 3000kg / 1000

#DIN934 for nuts

/8

#ThreadedRods4Beginners
#RoHS

Good manufacturers follow #RoHS compliance
RoHS => Restriction of Hazardous Substances has been implemented protect humans & environment from hazardous chemicals. The #EU adopted the standards in 2003

/9

#ThreadedRods4Beginners
#RoHS
Banned substances include lead, mercury (kwik NL), cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers, 4 types of phthalates

/10

#ThreadedRods4Beginners

#BreakerBars

You always need 2 use a breakerbar to dislodge a faster, never your #torqueWrench a precision instrument. This vid shows the strength of small #BreakerBars



/11

#ThreadedRods4Beginners

#BreakerBars

Convert the #pound #feet values to #metric #NewtonMeter using (torque * 1.356) formula

/12

#ThreadedRods4Beginners

I hashtag this thread also in the cycling section, because I think its vital you know how to work with these rods, esp in sizes much larger than what your bike has at max.
The skills will enable you to work with more insight on delicate bike fastners