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Material
17-4 PH Stainless Steel
18-8 Stainless Steel
303 Stainless Steel
304 Stainless Steel
316 Stainless Steel
Stainless Steel
Thread Type
Acme
Metric Rounded Trapezoidal
Rounded Acme
Stub Acme
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
3/8"
-5
Nut Type
Coupling
Hex
Component
Collar
Lead Screw
Nut
Thread Direction
Left Hand
Right Hand
Length
6"
9"
12"
18"
3 ft.
6 ft.
12 ft.
50 mm
75 mm
100 mm
145 mm
150 mm
250 mm
500 mm
1,000 mm
Number of Thread Starts
1
2
3
4
5
6
7
8
12
16
Travel Distance per Turn
0.024"
0.025"
0.048"
0.05"
0.063"
0.083"
0.094"
0.096"
0.1"
0.125"
0.167"
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
3 mm
4 mm
5 mm
6 mm
8 mm
10 mm
12 mm
20 mm
35 mm
60 mm
Width
9/32"
11/32"
13/32"
7/16"
1/2"
5/8"
11/16"
7/8"
1"
1
1/16"
1
1/4"
1
3/8"
1
1/2"
1
5/8"
1
3/4"
2"
2
1/4"
3"
3
1/2"
Thread Fit
Acme Class 2C
Acme Class 2G
Threading
Fully Threaded
Hardness
Brinell 150
Brinell 160
Brinell 170
Brinell 228
Rockwell B96
Rockwell B97
Rockwell C35
Not Rated
Speed Ratio
1:1
2:1
3:1
4:1
5:1
6:1
7:1
8:1
12:1
16:1
Height
15/64"
23/64"
31/64"
39/64"
47/64"
55/64"
63/64"
1
7/64"
1
7/32"
1
1/4"
1
15/32"
1
1/2"
1
31/32"
2
1/8"
2
1/4"
2
1/2"
2
3/4"
3"
3
1/2"
4"
RoHS
Compliant
Not Compliant
Tensile Strength
20,000 psi to 39,999 psi
40,000 psi to 99,999 psi
100,000 psi or greater
Not Rated
REACH
Compliant
Not Compliant
U.S.–Mexico–Canada Agreement (USMCA) Qualifying
Yes
No
Thread Pitch
0.3 mm
0.4 mm
0.5 mm
1 mm
1.25 mm
2.5 mm
3 mm
5 mm
7.5 mm
DFARS Specialty Metals
Compliant
Exempt
Not Compliant
Export Control Classification Number (ECCN)
EAR99
Fastener Strength Grade/Class
ASTM Grade B8M
Shaft Type
Acme Lead Screw
Performance
Clamping
Fast Travel
Ultra Precision
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422 Products
Lead Screws and Nuts
Acme Lead Screws and Nuts
Broad, square threads for quick assembly, strong clamping, and heavy lifting
173 products
Other Products
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Pair with precision lead screw nuts for accurate starts and stops in your assembly
235 products
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Position components and limit travel along a lead screw
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The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)