Page 1 of 2
REV-05
Fastenal Product Standard
Date: December 10, 2015
HHN.2H.P
Heavy Hex Nuts, ASTM A194 / ASME SA194 2H, 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.
Nominal
Size
1/4
5/16
3/8
7/16
1/2
9/16
5/8
3/4
7/8
1
1 1/8
1 1/4
1 3/8
1 1/2
1 5/8
1 3/4
1 7/8
2
2 1/4
2 1/2
2 3/4
3
3 1/4
3 1/2
3 3/4
4
4 1/2
5
F
Width Across Flats
Max.
.500
.562
.688
.750
.875
.938
1.062
1.250
1.438
1.625
1.812
2.000
2.188
2.375
2.562
2.750
2.938
3.125
3.500
3.875
4.250
4.625
5.000
5.375
5.750
6.125
6.875
7.625
Min.
.488
.546
.669
.728
.850
.909
1.031
1.212
1.394
1.575
1.756
1.938
2.119
2.300
2.481
2.662
2.844
3.025
3.388
3.750
4.112
4.475
4.838
5.200
5.562
5.925
6.650
7.375
H
Thickness
Max.
.250
.314
.377
.441
.504
.568
.631
.758
.885
1.012
1.139
1.251
1.378
1.505
1.632
1.759
1.886
2.013
2.251
2.505
2.759
3.013
3.252
3.506
3.760
4.014
4.522
5.030
Min.
.218
.280
.341
.403
.464
.526
.587
.710
.833
.956
1.079
1.187
1.310
1.433
1.556
1.679
1.802
1.925
2.155
2.401
2.647
2.893
3.124
3.370
3.616
3.862
4.354
4.846
Page 2 of 2
Date: December 10, 2015
REV-05
Fastenal Product Standard
HHN.2H.P
Specification Requirements:
•
•
Dimensions:
Material &
Mechanical Properties:
•
•
•
Thread Requirements:
Finish:
Product Marking:
•
Material Test Reports:
ASME B18.2.2. (sizes larger than 4 inch are vendor supplied)
Grade 2H of ASTM A194/A194M and ASME SA194/SA194M
UNF shall have the same proof load as UNC.
Sizes larger than 1-1/2” nominal diameter shall be accepted if meeting
the hardness requirement of 35 HRC (max), using the prescribed test
method of ASTM A370.
ASME B1.1, UNC & UNF, or UN8, Class 2B
Light Protective Oil
Manufacturer ID and 2H (or 2HB when manufactured from bar
stock)
The MTR must have documented lot traceability, dimensional
results, full chemical test results and full mechanical test results
to the ASTM A194/A194M and ASME SA194/SA194M specifications
above. In addition, the MTR shall be in full compliance with
Fastenal’s MTR Requirements.