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REV-01
Fastenal Product Standard
Date: March 18, 2016
M.HHN.2H.P
Metric, Heavy Hex Nuts, ASTM A194M 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.
Diameter
and
Thread
Pitch
S
M
Width Across
Flats
Thickness
Max.
M12 X1.75 21.00
M14 X 2
24.00
M16 X 2
27.00
M18 X 2.5 30.00
M20 X 2.5 34.00
M22 X 2.5 36.00
M24 X 3
41.00
M27 X 3
46.00
M30 X 3.5 50.00
M33 X 3.5 55.00
M36 X 4
60.00
M39 X 4
65.00
M42 X 4.5 70.00
M45 X 4.5 75.00
M48 X 5
80.00
M52 X 5
85.00
M56 X 5.5 90.00
M64 X 6 100.00
Min.
20.16
23.16
26.16
29.16
33.00
35.00
40.00
45.00
49.00
53.80
58.80
63.80
67.90
72.80
77.60
82.40
87.20
96.80
Max.
12.3
14.3
17.1
18.9
20.7
23.6
24.2
27.5
30.7
33.6
36.6
39.0
42.0
45.0
48.0
52.0
56.0
64.0
Min.
11.9
13.6
16.4
18.1
19.4
22.3
22.9
26.3
29.1
32.0
35.0
37.5
40.4
43.4
46.4
50.3
54.1
62.1
Dw
Bearing
Face
Diameter
Min.
19.2
22.0
24.9
27.7
31.4
33.3
38.0
42.8
45.6
50.6
55.9
60.2
64.5
69.1
73.7
78.2
82.8
92.0
C
Washer Face
Thickness
Max.
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
1.0
1.0
1.0
1.0
1.0
1.0
Min.
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.5
0.5
0.5
0.5
0.5
0.5
Specification Requirements:
•
Dimensions:
•
•
Threads:
Material &
Mechanical Properties:
•
Product Marking:
ASME B18.2.4.6M
M18, M33, M39, M45, & M52: See Table Above
6H
ASTM A194M 2H except:
Sizes requiring a proof load in excess of 705kN. shall be accepted on
hardness requirements of 35 HRC (Max.) to 95 HRB (Min.), using the
prescribed test methods of ASTM A370
Manufacturer ID and 2H grade marking
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Date: March 18, 2016
•
•
Finish:
Material Test Reports:
Fastenal Product Standard
REV-01
M.HHN.2H.P
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.