Lead Screws By Size

KERK® brand lead screws utilize the latest in precision rolling technology. Lead screws are available in standard diameters from 5/64" to 15/16" and includes metric and left hand threads. Most standard lead screws are manufactured from 303 stainless steel and are produced using Haydon Kerk Motion Solutions exclusive precision rolling process. Other lead screw materials are available for application-specific requirements.
Dynamic Load by Nut Type
Diameter Lead Range Units ZBX ZBA ZBM KHD WDG NTB VHD BFW
5/64 inch
(2mm)
0.012-0.079 in
(0.3-2.00 mm)
lbs
kg
1
(.45)
10
(4.5)
1/8 inch
(3.2mm)
0.024-0.125 in
(0.61-3.18 mm)
lbs
kg
5
(2.3)
25
(11)
0.132 inch
(3.3mm)
0.020-0.315 in
(0.50-8.00 mm)
lbs
kg
5
(2.3)
25
(11)
9/64 inch
(3.6mm)
0.012-0.394 in
(0.30-10.00 mm)
lbs
kg
5
(2.3)
25
(11)
5/32 inch
(4mm)
0.033-0.500 in
(0.84-12.70 mm)
lbs
kg
5
(2.3)
25
(11)
3/16 inch
(5mm)
0.020-0.050 in
(0.50-12.70 mm)
lbs
kg
10
(4.5)
5
(2.3)
25
(11)
7/32 inch
(5.6mm)
0.024-0.384 in
(0.61-9.75 mm)
lbs
kg
10
(4.5)
5
(2.3)
25
(11)
1/4 inch
(6mm)
0.024-1.000 in
(0.61-25.4 mm)
lbs
kg
5
(2.3)
5
(2.3)
10
(4.5)
10
(4.6)
50
(20)
5/16 inch
(8mm)
0.039-0.800 in
(1.00-20.32 mm)
lbs
kg
10
(5)
10
(5)
20
(10)
25
(11.3)
20
(10)
75
(35)
3/8 inch
(10mm)
0.025-1.500 in
(0.64-38.10 mm)
lbs
kg
10
(5)
10
(5)
20
(10)
25
(11.3)
20
(10)
75
(35)
7/16 inch
(11mm)
0.050-0.615 in
(1.27-15.62 mm)
lbs
kg
15
(7)
15
(7)
75
(34)
30
(13)
90
(40)
1/2 inch
(13mm)
0.050-2.000 in
(1.27-50.80 mm)
lbs
kg
25
(11)
25
(11)
75
(34)
100
(45)
150
(68)
150
(68)
5/8 inch
(16mm)
0.100-2.000 in
(2.54-50.80 mm)
lbs
kg
35
(16)
35
(16)
125
(56)
250
(113)
225
(100)
3/4 inch
(19mm)
0.0625-3.622 in
(1.59-92.00 mm)
lbs
kg
55
(25)
150
(68)
350
(159)
350
(160)
7/8 inch
(22mm)
0.200-1.000 in
(5.08-25.4 mm)
lbs
kg
55
(25)
200
(90)
350
(159)
500
(227)
15/16 inch
(24mm)
0.050-3.000 in
(1.27-76.20 mm)
lbs
kg
55
(25)
200
(90)
500
(227)