Grade
Identification
Size Inches
Recommended A563 Nut
Washer
Plain Finish
Hot-Dip or Mechanical Zinc Coated
Grade
Style
Grade
Style
36
1⁄2 – 11⁄2
A
Hex
A
Hex
F436
15⁄8 – 4
A
Heavy Hex
A
Heavy Hex
55
1⁄2 – 11⁄2
A
Hex
A
Heavy Hex
F436
15⁄8 – 4
A
Heavy Hex
A
Heavy Hex
105
1⁄2 – 11⁄2
D1
Heavy Hex
DH2
Heavy Hex
F436
15⁄8 – 3
DH2
Heavy Hex
DH2
Heavy Hex
Nuts
A563 Heavy Hex Nuts and Hex Nuts
The required nut specification for all F1554 anchor bolts is ASTM A563, which is the general nut specification for structural and mechanical applications. Depending on the diameter and finish of the anchor bolt, ASTM requires an A563 hex or heavy hex pattern nut. Heavy hex pattern nuts are slightly thicker and wider than hex nuts. The most common ASTM A563 grades found in the marketplace that are used with F1554 anchor bolts are A563 Grade A and A563 Grade DH. Low strength ASTM A563 Grade A nuts are found commonly in both hex and heavy hex patterns and are the recommend nut for both F1554 Grade 36 and F1554 Grade 55. A563 Grade DH high strength heavy hex nuts are required for use with F1554 Grade 105 high strength anchor bolts, however, A563 Grade DH nuts are often not available in certain diameters, finishes, or domestically manufactured. In these cases an A194 Grade 2H heavy hex nut can be substituted at any time to reduce cost. This substitution is specifically allowed at any time per ASTM A563 and is stated in the notes under Table 3 Mechanical Requirements in ASTM A563. A563 Grade DH nuts and A194 Grade 2H nuts can always be used with all three grades of F1554.
A563 Grades
A
Carbon steel, hex or heavy hex
B
Carbon steel, hex or heavy hex
C
Carbon steel, quenched and tempered, heavy hex
D
Carbon steel, quenched and tempered, heavy hex
DH
Carbon steel, quenched and tempered, heavy hex
C3
Weathering steel, quenched and tempered, heavy hex
DH3
Weathering steel, quenched and tempered, heavy hex
A563 Mechanical Properties
Grade
Style
Size, in.
Proof Load, ksi
Hardness, HBN
Plain
Galvanized
A
Hex
1/4 - 1-1/2
90
68
116 - 302
Heavy Hex
1/4 - 4
100
75
116 - 302
B
Heavy Hex
1/4 - 1
133
100
121 - 302
Heavy Hex
1-1/8 - 1-1/2
116
87
121 - 302
C / C3
Heavy Hex
1/4 - 4
144
144
143 - 352
D
Heavy Hex
1/4 - 4
150
150
248 - 352
DH / DH3
Heavy Hex
1/4 - 4
175
150
248 - 352
For UNC, 8UN, 6UN, and Coarse Pitch Threads
A563 Chemical Properties
Element
Grades O, A, B, C
D**
DH**
Carbon
0.55% max
0.55% max
0.20 - 0.55%
Manganese, min
0.30%
0.60%
Phosphorus, max
0.12%
0.04%
0.04%
Sulfur, max
0.15%*
0.05%
0.05%
* For grades O, A and B a sulfur content of 0.23% max is acceptable with the purchasers approval
** For grades D and DH a sulfur content of 0.05 - 0.15% is acceptable provided the manganese is 1.35% min
Element
Classes for Grade C3*
DH3
A
B
C
D
E
F
N
Carbon
0.33 - 0.40%
0.38 - 0.48%
0.15 - 0.25%
0.15 - 0.25%
0.20 - 0.25%
0.20 - 0.25%
0.20 - 0.53%
Manganese
0.90 - 1.20%
0.70 - 0.90%
0.80 - 1.35%
0.40 - 1.20%
0.60 - 1.00%
0.90 - 1.20%
0.40% min
Phosphorus
0.040% max
0.06 - 0.12%
0.035% max
0.040% max
0.040% max
0.040% max
0.07 - 0.15%
0.046% max
Sulfur, max
0.050%
0.050%
0.040%
0.050%
0.040%
0.040%
0.050%
0.050%
Silicon
0.15 - 0.35%
0.30 - 0.50%
0.15 - 0.35%
0.25 - 0.50%
0.15 - 0.35%
0.15 - 0.35%
0.20 - 0.90%
Copper
0.25 - 0.45%
0.20 - 0.40%
0.20 - 0.50%
0.30 - 0.50%
0.30 - 0.60%
0.20 - 0.40%
0.25 - 0.55%
0.20% min
Nickel
0.25 - 0.45%
0.50 - 0.80%
0.25 - 0.50%
0.50 - 0.80%
0.30 - 0.60%
0.20 - 0.40%
1.00% max
0.20% min**
Chromium
0.45 - 0.65%
0.50 - 0.75%
0.30 - 0.50%
0.50 - 1.00%
0.60 - 0.90%
0.45 - 0.65%
0.30 - 1.25%
0.45% min
Vanadium
0.020% min
Molybdenum
0.06% max
0.10% max
0.15% min**
Titanium
0.05% max
* Selection of a class shall be at the option of the manufacturer
** Nickel or Molybdenum may be used.
A194 Grade 2H Heavy Hex Nuts
Like A563 Grade DH, ASTM A194 Grade 2H is a high-strength nut with virtually identical mechanical requirements, but with additional heat treating and testing performed. This added heat treating and testing are required to ensure the nut performs at high temperatures. ASTM A194 is a high temperature and/or pressure bolting specification that is often used in piping or mechanical applications. Due to the mass-production of these nuts for these applications, A194 Grade 2H nuts are often widely available and are economical in certain diameters and finishes making them an excellent substitution for any A563 nut. In particular, A194 Grade 2H nuts are substituted and commonly used in place of A563 Grade DH heavy hex nuts.
A194 Chemical Properties
Element
2, 2H, and 2HM
4
7 and 7M (AISI 4140)
8 (AISI 304)
8M (AISI 316)
Carbon
0.40% min
0.40 - 0.50%
0.37 - 0.49%
0.08% max
0.08% max
Manganese
1.00% max
0.70 - 0.90%
0.65 - 1.10%
2.00% max
2.00% max
Phosphorus, max
0.040%
0.035%
0.035%
0.045%
0.045%
Sulfur, max
0.050%
0.040%
0.040%
0.030%
0.030%
Silicon
0.40% max
0.15 - 0.35%
0.15 - 0.35%
1.00% max
1.00% max
Chromium
0.75 - 1.20%
18.0 - 20.0%
16.0 - 18.0%
Nickel
8.0 - 11.0%
10.0 - 14.0%
Molybdenum
0.20 - 0.30%
0.15 - 0.25%
2.00 - 3.00%
Heavy Hex Nut Dimensions
Click table to show drawing
Bolt Diam.
F
C
H
Weight
(lbs.)
Width Across Flats
Width Across Corners
Thickness
Basic
Max
Min
Max
Min
Basic
Max
Min
1⁄2
7⁄8
0.875
0.850
1.010
0.969
31⁄64
0.504
0.464
0.07
5⁄8
11⁄16
1.062
1.031
1.227
1.175
39⁄64
0.631
0.587
0.12
3⁄4
11⁄4
1.250
1.212
1.443
1.382
47⁄64
0.758
0.710
0.20
7⁄8
17⁄16
1.438
1.394
1.660
1.589
55⁄64
0.885
0.833
0.30
1
15⁄8
1.625
1.575
1.876
1.796
63⁄64
1.012
0.956
0.43
11⁄8
113⁄16
1.812
1.756
2.093
2.002
17⁄64
1.139
1.079
0.59
11⁄4
2
2.000
1.938
2.309
2.209
17⁄32
1.251
1.187
0.79
13⁄8
23⁄16
2.188
2.119
2.526
2.416
111⁄32
1.378
1.310
1.02
11⁄2
23⁄8
2.375
2.300
2.742
2.622
115⁄32
1.505
1.433
1.31
15⁄8
29⁄16
2.562
2.481
2.959
2.828
119⁄32
1.632
1.556
1.62
13⁄4
23⁄4
2.750
2.662
3.175
3.035
123⁄32
1.759
1.679
2.04
17⁄8
215⁄16
2.938
2.844
3.392
3.242
127⁄32
1.886
1.802
2.41
2
31⁄8
3.125
3.025
3.608
3.449
131⁄32
2.013
1.925
2.99
21⁄4
31⁄2
3.500
3.388
4.041
3.862
213⁄64
2.251
2.155
4.19
21⁄2
37⁄8
3.875
3.750
4.474
4.275
229⁄64
2.505
2.401
5.64
23⁄4
41⁄4
4.250
4.112
4.907
4.688
245⁄64
2.759
2.647
7.38
3
45⁄8
4.625
4.475
5.340
5.102
261⁄64
3.013
2.893
9.50
31⁄4
5
5.000
4.838
5.774
5.515
33⁄16
3.252
3.124
11.94
31⁄2
53⁄8
5.375
5.200
6.207
5.928
37⁄16
3.506
3.370
15.26
33⁄4
53⁄4
5.750
5.562
6.640
6.341
311⁄16
3.760
3.616
18.12
4
61⁄8
6.125
5.925
7.073
6.755
315⁄16
4.014
3.862
21.80
Dimensions per ASME B18.2.2 1987 (1999)
Hex Nut Dimensions
Click table to show drawing
Nominal Size
F
C
H
Part Numbers
Width Across Flats
Width Across Corners
Thickness
Domestic
Import
Basic
Max
Min
Max
Min
Basic
Max
Min
Plain
Galvanized
Plain
Galvanized
1⁄2
3⁄4
0.750
0.736
0.866
0.840
7⁄16
0.448
0.427
16270
16271
11701
11702
5⁄8
15⁄16
0.938
0.922
1.083
1.051
35⁄64
0.559
0.535
16272
16273
11703
11704
3⁄4
11⁄8
1.125
1.088
1.299
1.240
41⁄64
0.665
0.617
16274
16275
11705
11706
7⁄8
15⁄16
1.312
1.269
1.516
1.447
3⁄4
0.776
0.724
16276
16277
11707
11708
1
11⁄2
1.500
1.450
1.732
1.653
55⁄64
0.887
0.831
16278
16279
11709
11710
11⁄8
111⁄16
1.688
1.631
1.949
1.859
31⁄32
0.999
0.939
16280
16281
11711
11712
11⁄4
17⁄8
1.875
1.812
2.165
2.066
11⁄16
1.094
1.030
16282
16283
11713
11714
13⁄8
21⁄16
2.062
1.994
2.382
2.273
111⁄64
1.206
1.138
-
-
11715
11716
11⁄2
21⁄4
2.250
2.175
2.598
2.480
19⁄32
1.317
1.245
16286
16287
11717
11718
Dimensions per ASME B18.2.2 1987 (1999)
Washers
F436 Washers
Unless otherwise specified ASTM F1554 requires a F436 type 1 hardened washer. This washer is a common mass-produced washer typically used with structural bolts and high-strength bolts of many different specifications. Unlike the general purpose and low grade F844 washer, the F436 washer is heat treated to a required hardness range and is designed for mechanical and structural use. The dimensions below show the standard dimensions for stock F436 washers that are economical and readily available. Custom F436 washers that can be thicker, square, or much larger can be custom manufactured, but at much higher cost and longer lead time.
F436 Mechanical Properties
Plain Finish
Hot Dip Galvanized
Rockwell Hardness 38 to 45 HRC
Rockwell Hardness 26 to 45 HRC
F436 Chemical Requirements
Element
Type 1
Type 3
Phosphorous, max
0.040%
0.040%
Sulfur, max
0.050%
0.050%
Silicon
-
0.15 - 0.35%
Chromium
-
0.45 - 0.65%
Nickel
-
0.25 - 0.45%
Copper
-
0.25 - 0.45%
Weathering steel washer may also be made from any of the steels listed in Table 2 of A325.
Hardened Washer Dimensions
Click table to show drawing
Bolt Size
B
A
C
Weight (lbs.)
Per 1000 Pieces
Part Numbers
Outside Diameter
Inside Diameter
Thickness
Domestic
Min
Max
Plain
Galvanized
1⁄2
11⁄16
17⁄32
0.097
0.177
18
16440
16441
5⁄8
15⁄16
11⁄16
0.122
0.177
33
16442
16443
3⁄4
115⁄32
13⁄16
0.122
0.177
41
16444
16445
7⁄8
13⁄4
15⁄16
0.136
0.177
64
16446
16447
1
2
11⁄16
0.136
0.177
82
16448
16449
11⁄8
21⁄4
13⁄16
0.136
0.177
105
16450
16451
11⁄4
21⁄2
13⁄8
0.136
0.177
133
16452
16453
13⁄8
23⁄4
11⁄2
0.136
0.177
163
16454
16455
11⁄2
3
15⁄8
0.136
0.177
200
16456
16457
15⁄8
31⁄4
13⁄4
0.178
0.28
320
19481*
19482*
13⁄4
33⁄8
17⁄8
0.178
0.28
307
16458
16459
17⁄8
31⁄2
2
0.178
0.28
360
16471*
16472
2
33⁄4
21⁄8
0.178
0.28
380
16460
16461
21⁄4
4
23⁄8
0.24
0.34
560
16462
16463
21⁄2
41⁄2
25⁄8
0.24
0.34
720
16464
16465
23⁄4
5
27⁄8
0.24
0.34
920
16611
16612
3
51⁄2
31⁄8
0.24
0.34
1040
16613
16614
31⁄4
6
33⁄8
0.24
0.34
1350
-
-
31⁄2
61⁄2
35⁄8
0.24
0.34
1633
18490
18460
33⁄4
7
37⁄8
0.24
0.34
1880
-
-
4
71⁄2
41⁄8
0.24
0.34
2200
18461
18462
Dimensions per ASTM F436
*Usually domestic
Other Accessories
Anchor sleeves
The alignment of anchor bolts and setting them perfectly into concrete in the required location so that the structure or equipment can fit perfectly over the anchor bolts is a difficult task. Often anchor bolt sleeves are specified to make this process easier and more forgiving. Anchor sleeves create a cavity or void in the concrete where the anchor bolt can be minutely adjusted in the case that an anchor bolt is slightly out of alignment and needs to be adjusted to fit the structure. Later, the space that the sleeve creates for adjustment is filled in with grout after fit is assured. Portland Bolt carries both Wilson Anchor Bolt Sleeves and Contec Anchor Bolt Sleeves. At times an engineer may specify a custom sleeve that consists of a steel pipe that is welded to an anchor bolt or anchor bolt embed plate. These welded pipe sleeves are highly custom and are designed by an engineer.
Anchor Sleeve Dimensions
Click table to show drawing
Wilson Sleeves
Contec Sleeves
Bolt Size
Shell Size
W x L
Part Number
Color Code
Shell Size
W x L
Part Number
1⁄2"
2" x 5"
18255
yellow
2" x 5"
18296
3⁄4"
-
5⁄8"
2" x 7"
18256
white
2" x 7"
18297
3⁄4"
18257
7⁄8"
18258
1"
3" x 10"
18259
green
3" x 10"
18298
11⁄4"
18260
11⁄2"
4" x 15"
18261
red
4" x 15"
18299
13⁄4"
18262
2"
4" x 18"
18263
blue
4" x 18"
18300
21⁄4"
18264
21⁄2"
6" x 24"
18265
brown
6" x 24"
18301
3"
18482
4"
-
-
black
6" x 24"
18302
5"
Plates
Square plates, embedded plates, and templates are all commonly used with F1554 anchor bolts. It is very typical for square plates to be used in place of F436 washers on the projecting threaded end of the anchor bolt, but perhaps even more common is to weld or fix in place a square plate at the bottom of the anchor bolt for pull out resistance. Embed plates can be round or square and are custom manufactured per an engineer’s requirement for the specific foundation calculated loads. It is typical for these embed or top washer plates to be made from A36 or A572 Grade 50 steel.
Templates and assemblies
Anchor bolts are often grouped in sets of two, four, six, eight, or more and are set into concrete using templates that keep the formation of the foundation in the pattern required. Templates can be used at the top of the anchor bolts as a “throw-away” template or can be pre-assembled with templates at the top and bottom of the assembly to hold the anchor bolts perfectly in place during shipping and concrete placement. Sometimes the bottom template is also a structural embed plate that serves for pull-out resistance and also as a template to hold the designed pattern together. Anchor bolt assemblies can be shipped loose without any assembly to reduce shipping cost and then assembled onsite or can be pre-assembled and shipped in marked assemblies. Fully assembled anchor bolt assemblies are laborious and increase shipping volume, but often greatly reduce onsite labor and create a more seamless product that can be used right off the truck or easily stored without worry about parts going missing.
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