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Thread Type
Acme
Metric
Metric Rounded Trapezoidal
Metric Trapezoidal
Rounded Acme
Stub Acme
UN
UNF
UNS
Shaft Type
Acme Lead Screw
System of Measurement
Inch
Metric
Thread Size
4-40
6-32
8-32
10-32
1/8"
-20.8
1/8"
-41.7
9/64"
-20.8
9/64"
-41.7
5/32"
-21.3
3/16"
-42.7
7/32"
-20.8
1/4"
-8
1/4"
-12
1/4"
-16
1/4"
-20
1/4"
-28
1/4"
-40
5/16"
-24
Component
Collar
Lead Screw
Nut
Length
9/32"
5/16"
21/64"
25/64"
13/32"
15/32"
31/64"
1/2"
5/8"
11/16"
3/4"
25/32"
15/16"
63/64"
1"
1
1/8"
1
1/4"
1
17/64"
Thread Direction
Left Hand
Right Hand
Right Hand and Left Hand
Nut Type
Coupling
Externally Threaded
Flange
Handle
Hex
Platform
Round
Square
Thumb
Material
360 Brass
Bronze
Iron
Plastic
Stainless Steel
Steel
Diameter
0.209"
0.228"
0.295"
0.297"
0.315"
0.354"
0.4"
0.406"
1/2"
0.548"
5/8"
0.68"
0.688"
0.703"
0.709"
3/4"
25/32"
0.787"
Travel Distance per Turn
0.024"
0.025"
0.048"
0.05"
0.063"
0.083"
0.094"
0.096"
0.1"
0.125"
0.166"
0.167"
0.192"
0.2"
0.25"
0.333"
0.375"
0.5"
1"
2"
0.3 mm
0.375 mm
0.5 mm
0.75 mm
1 mm
1.5 mm
2 mm
3 mm
4 mm
5 mm
6 mm
7 mm
8 mm
10 mm
12 mm
20 mm
35 mm
60 mm
Threading
Fully Threaded
Partially Threaded
Thread Fit
Acme Class 2C
Acme Class 2G
Metric Trapezoidal Class 7e
Metric Trapezoidal Class 7H
Metric Trapezoidal Class 8e
Number of Thread Starts
1
2
3
4
5
6
7
8
10
12
16
Thread Pitch
0.3 mm
0.4 mm
0.5 mm
1 mm
1.25 mm
1.5 mm
2 mm
2.5 mm
3 mm
4 mm
5 mm
7 mm
7.5 mm
Fastener Strength Grade/Class
ASTM Grade B7
ASTM Grade B8M
SAE Grade 2
SAE Grade 5
Tensile Strength
8,000 psi
9,000 psi
9,700 psi
10,000 psi
16,000 psi
31,000 psi
35,000 psi
44,000 psi
50,000 psi
53,000 psi
60,000 psi
64,000 psi
68,000 psi
70,000 psi
72,000 psi
75,000 psi
85,000 psi
90,000 psi
95,000 psi
105,000 psi
125,000 psi
145,000 psi
Not Rated
Speed Ratio
1:1
2:1
3:1
4:1
5:1
6:1
7:1
8:1
10:1
12:1
16:1
Hardness
Brinell 65
Brinell 69
Brinell 70
Brinell 126
Brinell 130
Brinell 141
Brinell 150
Brinell 160
Brinell 163
Brinell 167
Brinell 170
Brinell 200
Brinell 217
Brinell 228
Brinell 271
Durometer 74D
Durometer 83D
Rockwell B55
Width
0.22"
9/32"
0.311"
11/32"
0.402"
13/32"
7/16"
1/2"
9/16"
5/8"
11/16"
3/4"
7/8"
1"
1
1/16"
1
1/4"
1
3/8"
1
7/16"
REACH
Compliant
Not Compliant
U.S.–Mexico–Canada Agreement (USMCA) Qualifying
Yes
No
RoHS
Compliant
Compliant with Exemptions
Not Compliant
DFARS Specialty Metals
Compliant
Exempt
Not Compliant
Export Control Classification Number (ECCN)
EAR99
Height
0.197"
15/64"
0.276"
0.354"
23/64"
3/8"
31/64"
1/2"
17/32"
39/64"
5/8"
47/64"
3/4"
55/64"
7/8"
29/32"
63/64"
1"
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