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System of Measurement
Inch
Metric
Thread Size
2-56
4-40
6-32
8-32
10-24
10-32
1/4"
-20
1/4"
-28
5/16"
-18
5/16"
-24
3/8"
-16
3/8"
-24
7/16"
-14
7/16"
-20
1/2"
-13
1/2"
-20
5/8"
-18
3/4"
-16
7/8"
-14
1"-12
M3
M4
M5
M6
M8
M10
M12
Material
18-8 Stainless Steel
5052 Aluminum
Steel
Nut Type
Locknut
Press Fit
Rivet
Round
Weld
Retainer Material
18-8 Stainless Steel
1008-1010 Low-Carbon Steel
5052 Aluminum
Panel Thickness
0.038"
0.054"
0.97 mm
1.38 mm
Height
11/32"
7/16"
29/64"
33/64"
51/64"
8.6 mm
13 mm
13.7 mm
20.2 mm
Head Height
0.038"
0.054"
0.13"
0.17"
0.21"
0.97 mm
1.38 mm
3.31 mm
4.32 mm
5.34 mm
PEM® Part Number
AC-024-2
AC-032-1
AC-032-2
AC-0420-2
AC-0428-2
AC-440-1
AC-440-2
AC-632-1
AC-632-2
AC-832-2
AC-M3-1
AC-M3-2
AC-M4-1
AC-M4-2
AC-M5-2
AC-M6-2
AS-032-2
AS-0420-2
Finish
Cadmium Plated
Zinc Plated
For Use With
Aluminum
Steel
Length
0.498"
0.69"
0.784"
12.6 mm
17.5 mm
19.9 mm
Drill Bit Size
21/64"
25/64"
13/32"
7/16"
15/32"
33/64"
17/32"
37/64"
45/64"
53/64"
15/16"
7.4 mm
9.4 mm
10 mm
10.3 mm
10.4 mm
11 mm
13.1 mm
13.5 mm
1 Ga.
I
L
Q
U
Thread Type
Metric
UNC
UNF
Thread Fit
Metric Class 4H
Metric Class 4H5H
Metric Class 4H6H
Metric Class 6H
Unified Standard Class 2B
Unified Standard Class 3B
For Material Thickness
0.020" to 0.100"
0.027" to 0.130"
0.027" to 0.150"
3/16"
5/16"
3/8"
1/2"
5/8"
11/16"
3/4"
0.500 mm to 2.500 mm
0.700 mm to 3.300 mm
0.700 mm to 3.800 mm
Thread Pitch
0.5 mm
0.7 mm
0.8 mm
1 mm
1.25 mm
1.5 mm
1.75 mm
Head OD
0.36"
0.39"
0.44"
0.47"
0.6"
9.14 mm
11.18 mm
11.94 mm
15.24 mm
Thread Spacing
Coarse
Fine
U.S.–Mexico–Canada Agreement (USMCA) Qualifying
Yes
No
RoHS
Compliant
Export Control Classification Number (ECCN)
EAR99
REACH
Compliant
Not Compliant
DFARS Specialty Metals
Exempt
Not Compliant
Performance
Corrosion Resistant
High Strength
Self-Aligning
Vibration Resistant
Base Length
1
1/2"
1
3/4"
2"
2
1/4"
38.1 mm
50.8 mm
58.7 mm
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109 Products
Fastening and Joining
Press-Fit Nuts
Push into drilled or punched holes to add threads to thin panels
42 products
Weld Nuts
Weld to metal surfaces to add permanent threads
26 products
Rivet Nuts
Add threads to thin panels with access from only one side; also known as blind inserts
11 products
Threaded Inserts
Create new threads or repair stripped threads
25 products
The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)