DIN571 Carbon Steel Wzp Hexagonal & Bugle Head Wood Self
TappingScrew Coil Ring NailLegend:b - length of the thread (at
least)l - length of boltk - head heighte - the
diameter of the circumscribed circle (not less than)s - size
hex head turnkeySelf Drilling Screw ( Please Click the Following
Picture)Anchor Screw ( Please Click the Following
Picture)Makings:QBHSteel: steelStainless: A2,
A4Plastic: -Non Ferrous: -Thread: as DIN 7998Table
according to DIN 571:Thread456-7810121620dsnominalsize
max.4567810121620min.3,524,525,526,427,429,4211,315,319,3damax.567,28,210,212,215,219,224,4knominalsize2,83,5455,5781013max.3,13,884,385,385,887,458,4510,4513,9min.2,53,133,634,635,136,557,559,5512,1snominalsize7810121317192430max.7810121317192430min.6,647,649,6411,5712,5716,5718,4823,1629,16emin.7,58,6310,8913,0714,218,7220,8826,1732,95l weight
kg/1000pcsnominalsizemin.max.1615,116,91,71292 2018,9521,052,013,425,02 2523,9526,052,414,025,82 11,5 3028,9531,052,814,626,62 12,923,6 3533,7536,253,115,127,42 14,225,836,2 4038,7541,253,515,828,22 15,62839,2 4543,7546,25 8,94 16,93042,1 5048,7551,25 9,64 18,232,145,484,1 5553,556,5 10,5 19,634,348,689,7 6058,561,5 11,2 20,936,551,894,91656563,566,5 22,238,554,799,51747068,571,5 23,640,757,81071827573,576,5 2542,9611121928078,581,5 26,545,264,51182019088,2591,75 29,449,97113022010098,25101,75 325477,1141238110108,25111,75 83,4152253120118,25121,75 89,5163275130128132 175293140138142 187317150148152 198328160158162 209348170168172 366180178182 385190187,7192,3 404200197,7202,3 421
Process flowCold forgingAnnealing treatment(if
need) -> wiredrawing -> clod forging -> thread
rolling -> make heat treatment(if
need) -> Finish Packing Hot
forgingCutting material -> hot
forging -> turning -> shrink
diameter(half thread) -> thread
rolling -> make heat treatment(if
need) -> Finish -> Packing Product
GradeClass4.8 Class5.8 Class6.8 Class8.8 Class10.9
Class12.9NO.Mechanical orphysical propertyProperty
class4.64.85.65.86.88.89.810.912.9/12.9D≤16mmad>16mmbd≤16mm1Tensile
strengthRm,Mpanom.c40050060080090010001200max.400420500520600800830900104012202Lower
yield
strengthReL,Mpanom.c240--300--------------max.240--300--------------3Stress
at 0,2 % nonproportional
elongationRp0.2,Mpanom.c----------6406407209001080max.----------64066072094011004Stress
at 0,0048 d non-proportional elongation forfull-size
fastenersRpf,Mpanom.c--320--400480----------max.--340e--420e480e----------5Stress
under proof loadSpf,Mpanom.225310280380440580600650830970Proof
Sp,nom/ReL min Orstrength Sp,nom/Rp0.2min Orrati
Sp,nom/Rpf
min 0.940.910.930.90.920.910.910.90.880.886Percentage
elongationafter fracture formachined test
pieces,A,%min.22--20----121210987Percentage reduction of area
afterfracture for machined test pieces,Z,%min.--524848448Elongation
after fracture for
full-sizefasteners,Afmin.--0.24--0.220.2----------9Head soundnessNo
fracture10Vickers hardness,
HV,F≥98Nmin.120130155160190250255290320385max.220g25032033536038043511Brinell
hardness,
HBW,F=30D²min.114124147152181238242276304366max.209g23830431834236141412Rockwell
hardness,HRB ,HRBmin.6771798289 max.95g99.5 Rockwell
hardness,HRCmin.--2223283239max.--323437394413Surface hardnessHV
0.3max.--hh,jh,j14Height of non-decarburized thread
zone,E,mmmin.--1/2H12/3H13/4H1Depth of complete decarburization in
thethread,G,mmmax.--0.01515Reduction of hardness after
retempering,HVmax.--2016Breaking torque,MB,N·mmin.--in accordance
with ISO 898-717Impact strength,KVK,I,Jmin.--27--27272727m18Surface
integrity in accordance withISO 6157-1nISO 6157-3a Values do not
apply for structural bolting.b For structural bolting d W M12.c
Nominal values are specified only for the purpose of the
designation system for property classes.See Clause 5.d In cases
where the lower yield strength ReL cannot be determined, it is
permissible to measure the stress at 0,2 % non-proportional
elongation Rp0,2.e For the property classes 4.8, 5.8 and 6.8 the
values for Rpf min are under investigation. The present values are
given for calculation of the proof stress ratio only. They are not
test values.f Proof loads are specified in Tables 5 and 7.g
Hardness determined at the end of a fastener shall be 250 HV, 238
HB or 99,5 HRB maximum.h Surface hardness shall not be more than 30
Vickers points above the measured core hardness of the fastener
when determination of both surface hardness and core hardness are
carried out with HV 0,3.i Any increase in hardness at the surface
which indicates that the surface hardness exceeds 390 HV is not
acceptable.j Any increase in hardness at the surface which
indicates that the surface hardness exceeds 435 HV is not
acceptable.k Values are determined at a test temperature of −20 °C,
see 9.14.l Applies to d W 16 mm. m Value for KV is under
investigation.n Instead of ISO 6157-1, ISO 6157-3 may apply by
agreement between the manufacturer and the
purchaser. Materials an
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