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Bolt Length w/

Single Nut & Single Washer Calculator

Bolt Grip

Dia. Inches Inches

1/2 1 1/ 4 2.! 2.2"

"/#

$/4

%/#

1

1 1/#

1 1/4

1 $/#

1 1/2

Bolt Length

Speci' threa( length when using Dou)le Nuts

No*inal Single Nut Dou)le NutBolt To determine required Bolt To determine required Bolt

Si+e Length Add to Grip Length Add to Grip

Inches *illi*eters Inches *illi*eters

11/1,- 1% 1$/1,- $

%/#- 22 11/2- $#

1- 2" 1$/4- 44

11/#- 2! 2- "1

11/4- $2 21/4- "%

11/2- $# 2"/#- ,%

1"/#- 41 2%/#- %$

1$/4- 44 $1/#- %!

1%/#- 4# $$/#- #,

Bolted Parts (ASTM A325 & A490 BOLTS)

The slope of surfaces of bolted parts in contact with the bolt head and nut sh

axis Bolted steel parts shall not be separated b! gas"ets and shall #t solidl! t

the nominal olt diameter!

A490 olts and gal"ani#ed A325 olts shall not e re$sed! %etightening re"io$s tighte

shall not e onsidered as re$se!

nter Grip Inches

1Lg. 2Lg.

*+,ith -!,!

2+,ith Be"el ,asher

.n order to determine the re/$ired olt length the "al$e in the tale elo1 sho$ld e adde

material el$si"e o' 1ashers)or enter the ri in the al$lator ao"e 'or single n$t 1it

'or man$'at$ring toleranes to ro"ide 'or '$ll thread engagement o' hea" he n$t 1he

add 5632+inh and 'or eah e"el 1asher add 56*7+inh! The length is determined $se o

Inches 0**

1/2- 01$

"/#- 01,

$/4- 01!

%/#- 022

1- 02"

11/#- 02!

11/4- 0$2

1$/#- 0$"

11/2- 0$#

sub&punched and reamed% or drilled% as required b! applicable code or speci#

O"ersi#ed 8olesmay have nominal diameters up to: $/1,-larger than bolts %/#-and less in

and "/1,-larger than bolts 11/#-and greater in diameter $aredened washers

ASTM A325 & A490 BOLTS &

(3ustBolt

Lengthto theNet1/4-

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No*inal 56ersi+e Short Long

Bolt 7oles Slotte( Slotte(

Si+e 7oles 7oles1/2- "/#- !/1,-11/1,- !/1,-11/4-

"/#- 1$/1,- 11/1,-%/#- 11/1,-1!/1,-

$/4- 1"/1,- 1$/1,-1- 1$/1,-1%/#-

%/#- 11/1,- 1"/1,-11/#- 1"/1,-2$/1,-

1- 11/4- 11/1,-1"/1,- 11/1,-21/2-

11/#- 1%/1,- 1$/1,-11/2- 1$/1,-21$/1,-

11/4- 1!/1,- 1"/1,-1"/#- 1"/1,-$1/#-

1$/#- 111/1,- 1%/1,-1$/4- 1%/1,-$%/1,-

11/2- 11$/1,- 1!/1,-1%/#- 1!/1,-$$/4-

811/2- (9"/1,- 0(91/1,-0(9$/#- 0(91/1,-02."(

Minim$m Bolt Saing

0Center o Stan(ar( 7ole to (ge o Connecte( :art

No*inal ; Shapes or Bars

Si+e (ges or Gas Cut (ges

1/2- %/#- $/4-

"/#- 11/#- %/#-

$/4- 11/4- 1-

%/#- 11/#-

1- 11/4-

11/#- 2- 11/2-

11/4- 21/4- 1"/#-

811/4- 1.%" Dia. 1.2" Dia.

These may be 1-1/4" @ the ends of beam connection angles

?a. 7oles Si+e 0No*inalInches

The distance between centers of standard% o'ersi(ed% or slotted fasteners sha

diameter of the fastener% inches (istance o $( is preerre(.

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Bolt

Si+e

B C

Bolt Di*ensions. Inches Nut Di*ension

No*inal 7ea6' 7e Structural Bolts 7ea6' 7e

Bolt Si+e Wi(th across 7eight Ahrea( Wi(th across

D 7 Length

Inches 0**

Inches 0**

1/4- 0, $/4- 01! 1/2- 01$ 1/2- 01$ 1- 02"

$/#- 01 11/#- 02! $/4- 01! $/4- 01! 1$/#- 0$"

1/2- 01$ 1$/#- 0$" %/#- 022 %/#- 022 1$/4- 044

"/#- 01, 1"/#- 041 1- 02" 1- 02" 21/#- 0"4$/4- 01! 1%/#- 04# 11/#- 02! 11/#- 02! 2"/#- 0,%

%/#- 022 21/#- 0"4 11/4- 0$2 11/4- 0$2 $- 0%,

1- 02" 2$/#- 0, 1$/#- 0$" 1$/#- 0$" $1/4- 0#$

11/#- 02! 2"/#- 0,% 11/2- 0$# 11/2- 0$# $$/#- 0#,

11/4- 0$2 2%/#- 0%$ 1"/#- 041 1"/#- 041 $%/#- 0!#

1$/#- 0$" $1/#- 0%! 1$/4- 044 1$/4- 044 4$/#- 0111

11/2- 0$# $$/#- 0#, 1%/#- 04# 1%/#- 04# 4%/#- 0124

lats lats W

1/2- 01$ %/#- 022 "/1,- 0# 1- 02" %/#- 022

"/#- 01, 11/1,- 02% 2"/,4- 01 11/4- 0$2 11/1,- 02%

$/4- 01! 11/4- 0$2 1"/$2- 012 1$/#- 0$" 11/4- 0$2

%/#- 022 1%/1,- 0$% $"/,4- 014 11/2- 0$# 1%/1,- 0$%

1- 02" 1"/#- 041 $!/,4- 01" 1$/4- 044 1"/#- 041

11/#- 02! 11$/1,- 04, 11/1,- 01% 2- 0"1 11$/1,- 04,

11/4- 0$2 2- 0"1 2"/$2- 02 2- 0"1 2- 0"1

1$/#- 0$" 2$/1,- 0", 2%/$2- 021 21/4- 0"% 2$/1,- 0",

11/2- 0$# 2$/#- 0, 1"/1,- 024 21/4- 0"% 2$/#- 0,

ASTM A325 & A490 BOLTS & :TS

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No*inal No*inal No*inal Ahicness

Bolt Si+e 5utsi(e Dia*eter

D Dia*eter ?in. ?a.

Length ,eight o' ASTM A325 or A490

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7ea(

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Circular Washers

o 7ole

1/2- 01$ 11/1,- 02% 1%/$2- 01$ .!% 02 .1%% 04"/#- 01, 1"/1,- 0$$ 11/1,- 01% .122 0$ .1%% 04

$/4- 01! 11"/$2- 0$% 1$/1,- 021 .122 0$ .1%% 04

%/#- 022 1$/4- 044 1"/1,- 024 .1$, 0$ .1%% 04

1- 02" 2- 0"1 11/#- 02! .1$, 0$ .1%% 04

11/#- 02! 21/4- 0"% 11/4- 0$2 .1$, 0$ .1%% 04

11/4- 0$2 21/2- 0,4 1$/#- 0$" .1$, 0$ .1%% 04

1$/#- 0$" 2$/4- 0% 11/2- 0$# .1$, 0$ .1%% 04

11/2- 0$# $- 0%, 1"/#- 041 .1$, 0$ .1%% 04

7ea6' 7e Structural Bolts wit

Inches 0** 1/2- 01$ "/#- 01, $/4- 01! %/#- 022

1- 02" 1,." 0%.4# 2!.4 01$.$4 4% 021.$2

11/4- 0$2 1%.# 0#.% $1.1 014.11 4!., 022." %4.4 0$$.%"

11/2- 0$# 1!.2 0#.%1 $$.1 01".1 "2.2 02$.,# %# 0$".$#

1$/4- 044 2." 0!.2! $".$ 01,.1 "".$ 02".# #1.! 0$%.1"

2- 0"1 21.! 0!.!$ $%.4 01,.!, "#.4 02,." #,.1 0$!."

21/4- 0"% 2$.$ 01."% $!.# 01#." ,1., 02%.!4 !.$ 04.!,

21/2- 0,4 24.% 011.2 41.% 01#.!1 ,4.% 02!.$" !4., 042.!1

2$/4- 0% 2,.1 011.#4 4$.! 01!.!1 ,%.# 0$.%" !#.# 044.#1

$- 0%, 2%.4 012.4$ 4,.1 02.!1 %.! 0$2.1, 1$ 04,.%2

$1/4- 0#$ 2#.# 01$., 4#.2 021.#, %4 0$$."% 1% 04#."$

$1/2- 0#! $.2 01$.% ".4 022.#, %%.1 0$4.!% 111 0".$"

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41/4- 01# $4.$ 01".", ",.! 02".#1 #,.4 0$!.1! 124 0",.2"

41/2- 0114 $".% 01,.1! "! 02,.%, #!." 04., 12# 0"#.,

4$/4- 0121 $%.1 01,.#$ ,1.2 02%.%, !2.% 042." 1$$ 0,.$$

"- 012% $#." 01%.4, ,$.$ 02#.%1 !".# 04$.4" 1$% 0,2.14

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1 .W.

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2.1 0.!" $., 01.,$ 4.# 02.1# % 0$.1#

2$.1 01.4# 22.4 01.1, 21 0!."$ 2.2 0!.1,

8/10/2019 Bolts-1

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Bolt Length w/

Single Nut & Single Washer Calculator

Bolt Grip

Dia. ** **

1$ $2 "$.4$ "%.4

1,

1!

22

2"

$

$2

$"

$#

8/10/2019 Bolts-1

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No*inal 56ersi+e Short Long

Bolt 7oles Slotte( Slotte(

Si+e 7oles 7oles1$ 1, 141% 14$2

1, 21 1%22 1%4

1! 24 212" 214#

22 2% 242! 24",

2" $2 2%$$ 2%,4

2! $% $$# $%1

$2 4 $$41 $$%!

$" 4$ $%44 $%#%

$# 4, 4"# 4!"

8$# 84, 0(920(9! 0(9202."(

0Center o Stan(ar( 7ole to (ge o Connecte( :art

No*inal ; Shapes or Bars

Si+e (ges or Gas Cut (ges

1$ 22 1!

1, 2! 22

1! $2 2"

22 $# 2!

2" 44 $2

2! "1 $#

$2 "% 41

8$2 1.%" Dia. 1.2" Dia.

These may be 32 @ the ends of beam connection angles

?a. 7oles Si+e 0No*inal *illi*eters

ll be not less than 2 2/$(where -(-is the nominal

Minim$m ;dge

8/10/2019 Bolts-1

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B C

s> Inches

uts

7eight

7

Inches 0**

%/#- 022 "/#- 01,

11/#- 02! $/4- 01!

1$/#- 0$" %/#- 022

11/2- 0$# 11/#- 02!1"/#-041 11/4- 0$2

1%/#- 04# 1"/#-041

21/#- 0"4 1%/#- 04#

21/4- 0"% 1%/#- 04#

21/2- 0,4 2- 0"1

2$/4- 0% 21/4- 0"%

2%/#- 0%$ 21/2- 0,4

$1/,4- 012

$!/,4- 01"

4%/,4- 01!

""/,4- 022

,$/,4- 02"

1%/,4- 0$%

1%/$2- 0$1

111/$2- 0$4

11"/$2- 0$%

en n( Wrench

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SE. or =ect. Be6el Washers

?ini*u* Slope or

Si(e ?ean Aaper in

Di*ension Ahicness Ahicness

1F,