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System of Measurement
Inch
Metric
Thread Size
2-56
4-40
4-48
6-32
6-40
8-32
8-36
10-24
10-32
1/4"
-20
1/4"
-28
1/4"
-32
5/16"
-18
5/16"
-24
5/16"
-32
3/8"
-16
3/8"
-24
3/8"
-32
7/16"
-14
7/16"
-20
1/2"
-13
1/2"
-20
1/2"
-28
5/8"
-11
5/8"
-18
3/4"
-10
3/4"
-16
7/8"
-9
1"-8
1
1/4"
-7
M2
M2.5
M3
M3.5
M4
M5
M6
M8
M10
M12
M16
Material
Aluminum
Brass
Stainless Steel
Steel
Gender
Female
Male
Hex Length
1/8"
3/16"
1/4"
5/16"
3/8"
7/16"
1/2"
9/16"
5/8"
11/16"
3/4"
7/8"
15/16"
1"
1
1/8"
1
1/4"
1
1/2"
1
3/4"
2"
2
1/4"
2
1/2"
3"
3.2 mm
4.8 mm
6.3 mm
6.35 mm
6.4 mm
9.5 mm
11 mm
12.7 mm
15 mm
18 mm
19.1 mm
25 mm
25.4 mm
37 mm
38 mm
38.1 mm
50 mm
54 mm
Thread Length
1
/
8
"
9
/
6
4
"
5
/
3
2
"
1
1
/
6
4
"
0
.
1
8
7
"
3
/
1
6
"
1
3
/
6
4
"
7
/
3
2
"
1
/
4
"
1
7
/
6
4
"
9
/
3
2
"
5
/
1
6
"
2
1
/
6
4
"
3
/
8
"
0
.
4
3
7
"
Hex Size
3/16"
13/64"
1/4"
5/16"
3/8"
7/16"
1/2"
9/16"
5/8"
11/16"
3/4"
13/16"
7/8"
15/16"
1"
1
1/16"
1
1/8"
1
1/4"
1
3/8"
1
5/8"
4.5 mm
6 mm
6.4 mm
7.9 mm
8 mm
9.5 mm
10 mm
11 mm
12.7 mm
13 mm
14 mm
16 mm
17 mm
17.4 mm
18 mm
19 mm
21 mm
22 mm
Pitch
0.35 mm
0.4 mm
0.45 mm
0.5 mm
0.6 mm
0.7 mm
0.75 mm
0.8 mm
1 mm
1.25 mm
1.5 mm
1.75 mm
2 mm
For Adapting
Gender
Thread Direction
Thread Size
Thread Type
Shape
Hex
Round
Length
1/8"
1/4"
1"
1
1/4"
1
1/2"
1
3/4"
2"
2
1/2"
2
3/4"
3"
3
1/8"
3
1/4"
3
1/2"
3
3/4"
4"
4
1/2"
5"
5
1/2"
5
7/8"
6"
7"
7
7/8"
8"
Drive Style
External Hex
Hex
Slotted
Thread Fit
Metric Class 6g
Metric Class 6H
Unified Standard Class 2A
Unified Standard Class 2B
Unified Standard Class 3A
Tensile Strength
45,000 psi
70,000 psi
73,000 psi
75,000 psi
78,000 psi
85,000 psi
150,000 psi
Not Rated
Hardness
Rockwell B55
Rockwell B56
Rockwell B65
Rockwell B67
Rockwell B70
Rockwell B80
Rockwell B83
Rockwell B85
Rockwell C39
Not Rated
RoHS
Compliant
Compliant with Exemptions
Not Compliant
Export Control Classification Number (ECCN)
2B999
EAR99
DFARS Specialty Metals
Compliant
Exempt
Not Compliant
REACH
Compliant
Not Compliant
Specifications Met
ASTM Standard
NAS
Thread Type
BSPP
BSPT
Metric
NPT
NPTF
UNC
UNF
Universal
Finish
Black Oxide
Passivated
Zinc Plated
Zinc Yellow-Chromate Plated
OD
1/4"
5/16"
27/32"
1
1/4"
1
1/2"
1
3/4"
2"
Pipe Size
1/8
1/4
3/8
1/2
3/4
Thread Spacing
Coarse
Fine
Shaft Diameter
1/2"
5/8"
3/4"
1"
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3,541 Products
Fastening and Joining
Thread Adapters
Join threads of a different type, size, and gender
3,527 products
Standoffs
Threaded to separate or connect parts as well as position components in assemblies
12 products
Power Transmission
Shaft Adapters
Increase or reduce your shaft's diameter to fit equipment, or replace damaged shaft ends
8 products
The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)