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II
:,
IIIl
IIIIIIIItfIItItI
Standard SPeclf icatlotl
Materlal
Mechanical ProPerties
Strength Grade
Screw Threads
Class of Threads
Surface Treatment
SIffi=TfTtrN"ffitrHmffi HEXAGSH$T
ANSI/ ASME 818.2.1 1981
Medium Carbon Steel
ASTM
A 325 rypeJANSI / ASME 81.1 1982 UI'{C
Class 2A
Black Oxlde
tg5rfr
Unh : mqr FACEEN
lwAsllTIiICI(NESS OF
II Nom Slze dI
'nIt----I d < r,'a.
Nom. Slze
dlnln.
d, tt
Basic
7 s.1
Max. Mlrr. Max. Min. Mar. Nth.
uzx ts r3.0s 22.22 2 1.59 25.65 24 61
5/8Xll t6.30 15.36 26.99 26. l9 31.16 25.94
94Xr0 r9.50 18.5 1
21.6.1
31 .75 30.78 36.65 35.13 l 1.90
7t8X I 22.73 36 51 35.41 42.t6 d0.36 r3 89
l x8 25.96 24.75 41.27 40.0 4't 65 45 62 15.rq
t 1t8X 7 29.1 8 27.89 46.03 44.60 53.1 6 50.85 17 46
I r/4X 7 32.43 31 06 50.8 49.22 58.65 56.1 I t 9.84
1?8x I 35.66 34 I l_r 55.56 53.82 64 t6 61 36 2t.4i
23 BI1 1t2x 6 38.89 60.32 54.42 6S.6d 66 60
ll c xR
[{ax.
820
t,l in. B asic Mar.
761 ' zs.q 4.82 0.23 lo 0.79
10 23 c60 3 1.75 5.59
0.53 lo 1.57
12 ?7 I 1.56 35.05 6.35
r ,1.30
lB 2d
11,1Q 38.1 711 0.79 lo 1.57
l5 01 \44.45 7.87
1,57 lo 2.36
16 7l 50.8 8.63
20.65
?,2.3
1A 02 508 s65
20 51 57 15 rr.17
?4.7 4 22.91 57.1 5 11.17
TOLEPANCE ON E
T
tItItIIrr
lIIII
| . Tolal Thlcknsss ol mate.ial, including v/ashors, to be connocled by boll
tr,,,rrmum Grip Gmin - LG + 0.67 p' whste G -Grip
LG - GriP gaging lenglh' max.
P - Thrsad Pilch
MECHANICAL PROPERTIES OF FULL SIZE BOLTS
Slross AfeaSq: nrm. i
I
r 4 5.81
215.48
298.1
lula:irnum Grip Grnax
whsre Gc
Q ,o,H
wtol
. q-a .-H-2vJlot lot- crip- Boll Length. nominal
- Boh Longth Tolsranc€. minus
- Nul Thicknsss
= Wshet Thicknoss T016ranc€
{max. - min.}
Mln. YleldLoadksl
l.lin, l'rool' Loadkst
0.606
0.763
0.969
1.405
Sl.ess AIe, = 0.7854 I d - (0,9743in) lr
625.16
7d5 16
391 .0
492.26
906.4 5
n = Tlrrerds Dcr in.ll
51620
!lin. Prool Strosspsi {kgl/rilr')
BrinBll Hardnsss.HBnln. mi
?18
GRIF NANGES FOR IIIG}J STRETIG1II STRUCTURAL BOLTS
Nom, giz?
dxn In.r/a x r3 6/SXlt 94xlo 7t8 x9 I x8 I t/6 X7 I tt.t X7 r3/sx6 I t/ex8
Nom. Lenglhln. . Q mm.
GRIP RANGE LG mm
Min, Max. Mln. Max Mln, Max. Mln. Ma(. Mln. Mil. Mln. Max. Mln. Ma, Mln. Mar. Min. Mar.
I lt,3t.75
11t2 '.' 38.113.9 20.o
1 7t4,
" 41.520.3 26.4
2.050.8
26.6 32.7 20.5 289 t7.5 23.8
21t467.1 6
33.0 39. I 26.5 353 23.8 30.2 20.8
2 ll263.5
39.3 45.4 41 6 30.2 Jb_5 27,1 3{,0
231469.S5
45.7 5 t.8 39.6 48.0 36.5 42.9 33,5 40..3 27.4) .:p3.0
78-2 52.0 58.1 45.9 543 n29 A9.2 39.8 46.7 33.1, d3 Er 27.9 38.8 27.9 360
311288.9
u.7 70,8 58.6 67 0 s5.6 61.9 52.5 59.4 464 563 40 6 51 5 40.6 48.1 3.5 45.4 3.r.5 42.t
4101.6
7-t 4 83.5 713 79 7 68.3 65.2 72 5sl 69.0 5r I 53 3 61 .4 47.2 58 1 47 .2 5.1.B
4112' 114.990. I s62 440 92 4 B r.0 87.3 71 I 84 .8 71 .8 8t 7 660 769 66.O 708 59.9 67.5
r27r 02.8 108.9 s67 r05 I 937 100.o 90.6 s 7.5 845 9n .l 7B u96 7A7 868 72.6 83.5 72.6 80.2
51t2rs9.7
I 15.5 121 6 r09..1 r!7 B 106.4 112 7 r03.3 ilo 2 91.?- 107 914 102.3 91.d 99.5F
853 96.2 853 92.9
6152.4
129.2 I 34.3 122.1 r 30.5 l lg 1 125 4 I 16.0 1?2.9 r 09.9 r r9.B rclt. I r 15 0 10.1 I 12.2 98.0 ro8 s 105.6
LOADS TABULATED ABOVE ARE BASED OT.J
Min. Yisld Slresspsl (kgl/mm')
l'lln. Tensil€ Slresspsi (kgfrnm?)
l/2lo I | 1200m
t 1/8 lo I l/2 I l050c0
RANGE OF BOLTS
I
(52.0:D