Page 1 of 3
REV-09
Fastenal Product Standard
Date: March 8, 2016
HHSB.A325.ASMBL.P
Heavy Hex Structural Bolt Assembly, A325, Type 1, Heavy Hex Nut, ASTM F436
Structural Washer, Plain
The information below lists the required dimensional, chemical and physical characteristics of the products in this purchase order. If
the order received does not meet these requirements, it may result in a supplier corrective action request, which could jeopardize your
status as an approved vendor. Unless otherwise specified, all referenced consensus standards must be adhered to in their entirety.
E
F
H
Full Size
Body Diameter
Width Across
Flats
Head
Height
Max.
Min.
Max.
1/2
0.515
0.482
0.875
0.85
0.323
0.302
0.031
0.009
1
5/8
0.642
0.605
1.063
1.031
0.403
0.378
0.062
0.021
1.25
3/4
0.768
0.729
1.25
1.212
0.483
0.455
0.062
0.021
1.38
Nominal
Size
(inch)
Min.
Max.
Min.
R
Lt
Fillet Radius
Thread
Length
Max.
Min.
Basic
7/8
0.895
0.852
1.438
1.394
0.563
0.531
0.062
0.031
1.5
1
1.022
0.976
1.625
1.575
0.627
0.591
0.093
0.062
1.75
1 1/8
1.149
1.098
1.813
1.756
0.718
0.658
0.093
0.062
2
1 1/4
1.277
1.223
2
1.938
0.813
0.749
0.093
0.062
2
1 3/8
1.404
1.345
2.188
2.119
0.878
0.81
0.093
0.062
2.25
1-1/2
1.531
1.47
2.375
2.3
0.974
0.902
0.093
0.062
2.25
Page 2 of 3
REV-09
Fastenal Product Standard
Date: March 8, 2016
HHSB.A325.ASMBL.P
Nominal
Size
1/2
5/8
3/4
7/8
1
1 1/8
1 1/4
1 3/8
1 1/2
Size
1/2
5/8
3/4
7/8
1
1 1/8
1 1/4
1 3/8
1 1/2
F
Width Across Flats
Max.
Min.
.875
.850
1.062
1.031
1.250
1.212
1.438
1.394
1.625
1.575
1.812
1.756
2.000
1.938
2.188
2.119
2.375
2.300
B
Nominal
1.063
1.313
1.468
1.750
2.000
2.250
2.500
2.750
3.000
A
Nominal
.531
.688
.813
.938
1.063
1.188
1.375
1.500
1.625
H
Thickness
Max.
Min.
.504
.464
.631
.587
.758
.710
.885
.833
1.012
.956
1.139
1.079
1.251
1.187
1.378
1.310
1.505
1.433
C
Min.
.097
.122
.122
.136
.136
.136
.136
.136
.136
Max.
.177
.177
.177
.177
.177
.177
.177
.177
.177
Specification Requirements:
•
Dimensions:
•
Material &
Mechanical Properties:
•
Thread Requirements:
Heavy Hex Structural Bolt: ASME B18.2.6
Heavy Hex Nut: ASME B18.2.2
Structural Washer: ASTM F436, Type 1
Heavy Hex Structural Bolt: ASTM F3125, Grade A325, Type 1
Heavy Hex Nut: ASTM A563 Grade C, C3, D, DH or DH3 (ASTM
A194 2H is also acceptable).
Structural Washer: ASTM F436, Type I; 38-45 HRC.
Heavy Hex Structural Bolt: ASME B1.1 UNC Class 2A
Heavy Hex Nut: ASME B1.1 UNC & UNF, or UN8 Class 2B
Page 3 of 3
Date: March 8, 2016
•
Marking:
•
•
Finish:
Material Test Reports:
Fastenal Product Standard
REV-09
HHSB.A325.ASMBL.P
Heavy Hex Structural Bolt: A325 and manufacturer ID.
Heavy Hex Nut: Manufacturer ID and Grade as appropriate to
mechanical properties noted above per ASTM A563 or ASTM A194.
Structural Washer: Manufacturer ID
Light Protective Oil
The MTR must have documented lot traceability, dimensional
results, full chemical test results and full mechanical test results
to the specification(s) above. In addition, the MTR shall be in full
compliance with Fastenal’s MTR Requirements.