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Clamping Knobs 4-Arm

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4-Arm Clamping Knobs provide a secure multilobed grip to position, tighten, and hold fixtures, equipment, and machinery. We offer a large selection of knob sizes, thread configurations and ergonomic grips to meet your design requirements. Our pronged knobs feature a plastic base design that provides excellent chemical resistance and a more economical choice opposed to all-steel versions.

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92 results
Product SKUs information
Item Code Price range Availability Stud Length Thread Size Insert Type Insert Material Nominal Diameter Knob Material View
$1.43 - $2.45 990 In stock
0.630 in
1/4-20
Stud
Steel
1.400 in
TPE Overlay PP
$0.99 - $1.71 414 In stock
0.500 in
5/16-18
Stud
Steel
1.730 in
PP
$1.26 - $2.16 390 In stock
1.000 in
5/16-18
Stud
Steel
2.500 in
PP
$1.41 - $2.42 785 In stock
1.500 in
3/8-16
Stud
Steel
2.500 in
PP
$1.36 - $2.34 800 In stock
0.370 in
1/4-20
Stud
Steel
1.400 in
TPE Overlay PP
$1.62 - $2.79 1208 In stock
0.500 in
5/16-18
Stud
Steel
1.730 in
TPE Overlay PP
$0.46 - $0.79 736 In stock
3.250 in
#10-24
Stud
Steel
1.150 in
PP
$1.76 - $3.02 1350 In stock
2.500 in
5/16-18
Stud
Steel
1.730 in
TPE Overlay PP
$0.67 - $1.16 1175 In stock
0.370 in
1/4-20
Stud
Steel
1.400 in
PP
$1.23 - $2.12 1275 In stock
#10-32
Blind Hole
Steel
1.400 in
TPE Overlay PP
$1.05 - $1.80 1997 In stock
5/16-18
Blind Hole
Steel
1.750 in
PP
$1.47 - $2.54 500 In stock
1/2-13
Blind Hole
Steel
2.500 in
PP
$1.10 - $1.88 950 In stock
1/4-20
Thru-Hole
Steel
2.500 in
PP
$1.00 - $1.72 814 In stock
0.750 in
5/16-18
Stud
Steel
1.750 in
PP
$1.15 - $1.98 Request the lead time here
0.500 in
1/4-20
Stud
Steel
2.500 in
PP
$1.29 - $2.23 889 In stock
0.750 in
3/8-16
Stud
Steel
2.500 in
PP
$1.45 - $2.48 877 In stock
2.500 in
3/8-16
Stud
Steel
2.500 in
PP
$1.22 - $2.10 1040 In stock
0.500 in
5/16-18
Stud
Steel
2.500 in
PP
$1.04 - $1.78 683 In stock
1.000 in
5/16-18
Stud
Steel
1.750 in
PP
$1.18 - $2.04 312 In stock
1.000 in
1/4-20
Stud
Steel
2.500 in
PP
  • of 5
4-Arm Knob 1.400 in 1/4-20 0.640 in Black Steel TPE Overlay PP

KN4C06254S2-S21

Price Range
$2.45 - $1.43

Stock Levels
990 In stock
Attributes
  • Nominal Diameter
    1.400 in
  • Thread Size
    1/4-20
  • Hub Diameter
    0.550 in
  • Knob Height
    0.640 in
  • Hub Height
    0.180 in
4-Arm Knob 1.730 in 5/16-18 0.820 in Black Steel PP

KN5C05004S4--21

Price Range
$1.71 - $0.99

Stock Levels
414 In stock
Attributes
  • Nominal Diameter
    1.730 in
  • Thread Size
    5/16-18
  • Hub Diameter
    0.750 in
  • Knob Height
    0.820 in
  • Hub Height
    0.250 in
4-Arm Knob 2.500 in 5/16-18 1.130 in Black Steel PP

KN5C10004P7--21

Price Range
$2.16 - $1.26

Stock Levels
390 In stock
Attributes
  • Nominal Diameter
    2.500 in
  • Thread Size
    5/16-18
  • Hub Diameter
    0.980 in
  • Knob Height
    1.130 in
  • Hub Height
    0.480 in
4-Arm Knob 2.500 in 3/8-16 1.130 in Black Steel PP

KN6C15004P7--21

Price Range
$2.42 - $1.41

Stock Levels
785 In stock
Attributes
  • Nominal Diameter
    2.500 in
  • Thread Size
    3/8-16
  • Hub Diameter
    0.980 in
  • Knob Height
    1.130 in
  • Hub Height
    0.480 in
4-Arm Knob 1.400 in 1/4-20 0.640 in Black Steel TPE Overlay PP

KN4C03754S2-S21

Price Range
$2.34 - $1.36

Stock Levels
800 In stock
Attributes
  • Nominal Diameter
    1.400 in
  • Thread Size
    1/4-20
  • Hub Diameter
    0.550 in
  • Knob Height
    0.640 in
  • Hub Height
    0.180 in
4-Arm Knob 1.730 in 5/16-18 0.820 in Black Steel TPE Overlay PP

KN5C05004S4-S21

Price Range
$2.79 - $1.62

Stock Levels
1208 In stock
Attributes
  • Nominal Diameter
    1.730 in
  • Thread Size
    5/16-18
  • Hub Diameter
    0.750 in
  • Knob Height
    0.820 in
  • Hub Height
    0.250 in
4-Arm Knob 1.150 in #10-24 0.650 in Black Steel PP

KN0432504S1--21

Price Range
$0.79 - $0.46

Stock Levels
736 In stock
Attributes
  • Nominal Diameter
    1.150 in
  • Thread Size
    #10-24
  • Hub Diameter
    0.500 in
  • Knob Height
    0.650 in
  • Hub Height
    0.250 in
4-Arm Knob 1.730 in 5/16-18 0.820 in Black Steel TPE Overlay PP

KN5C25004S4-S21

Price Range
$3.02 - $1.76

Stock Levels
1350 In stock
Attributes
  • Nominal Diameter
    1.730 in
  • Thread Size
    5/16-18
  • Hub Diameter
    0.750 in
  • Knob Height
    0.820 in
  • Hub Height
    0.250 in
4-Arm Knob 1.400 in 1/4-20 0.640 in Black Steel PP

KN4C03754S2--21

Price Range
$1.16 - $0.67

Stock Levels
1175 In stock
Attributes
  • Nominal Diameter
    1.400 in
  • Thread Size
    1/4-20
  • Hub Diameter
    0.550 in
  • Knob Height
    0.640 in
  • Hub Height
    0.180 in
4-Arm Knob 1.400 in #10-32 0.640 in Black Steel TPE Overlay PP

KN02----4S2BS21

Price Range
$2.12 - $1.23

Stock Levels
1275 In stock
Attributes
  • Nominal Diameter
    1.400 in
  • Thread Size
    #10-32
  • Hub Diameter
    0.550 in
  • Knob Height
    0.640 in
  • Hub Height
    0.180 in
4-Arm Knob 1.750 in 5/16-18 1.020 in Black Steel PP

KN5C----4P4B-22

Price Range
$1.80 - $1.05

Stock Levels
1997 In stock
Attributes
  • Nominal Diameter
    1.750 in
  • Thread Size
    5/16-18
  • Hub Diameter
    0.750 in
  • Knob Height
    1.020 in
  • Hub Height
    0.520 in
4-Arm Knob 2.500 in 1/2-13 1.130 in Black Steel PP

KN8C----4P7B-21

Price Range
$2.54 - $1.47

Stock Levels
500 In stock
Attributes
  • Nominal Diameter
    2.500 in
  • Thread Size
    1/2-13
  • Hub Diameter
    0.980 in
  • Knob Height
    1.130 in
  • Hub Height
    0.480 in
4-Arm Knob 2.500 in 1/4-20 1.130 in Black Steel PP

KN4C----4P7--21

Price Range
$1.88 - $1.10

Stock Levels
950 In stock
Attributes
  • Nominal Diameter
    2.500 in
  • Thread Size
    1/4-20
  • Hub Diameter
    0.980 in
  • Knob Height
    1.130 in
  • Hub Height
    0.480 in
4-Arm Knob 1.750 in 5/16-18 1.020 in Black Steel PP

KN5C07504P4--21

Price Range
$1.72 - $1.00

Stock Levels
814 In stock
Attributes
  • Nominal Diameter
    1.750 in
  • Thread Size
    5/16-18
  • Hub Diameter
    0.750 in
  • Knob Height
    1.020 in
  • Hub Height
    0.520 in
4-Arm Knob 2.500 in 1/4-20 1.130 in Black Steel PP

KN4C05004P7--21

Price Range
$1.98 - $1.15

Stock Levels
Request the lead time here
Attributes
  • Nominal Diameter
    2.500 in
  • Thread Size
    1/4-20
  • Hub Diameter
    0.980 in
  • Knob Height
    1.130 in
  • Hub Height
    0.480 in
4-Arm Knob 2.500 in 3/8-16 1.130 in Black Steel PP

KN6C07504P7--21

Price Range
$2.23 - $1.29

Stock Levels
889 In stock
Attributes
  • Nominal Diameter
    2.500 in
  • Thread Size
    3/8-16
  • Hub Diameter
    0.980 in
  • Knob Height
    1.130 in
  • Hub Height
    0.480 in
4-Arm Knob 2.500 in 3/8-16 1.130 in Black Steel PP

KN6C25004P7--21

Price Range
$2.48 - $1.45

Stock Levels
877 In stock
Attributes
  • Nominal Diameter
    2.500 in
  • Thread Size
    3/8-16
  • Hub Diameter
    0.980 in
  • Knob Height
    1.130 in
  • Hub Height
    0.480 in
4-Arm Knob 2.500 in 5/16-18 1.130 in Black Steel PP

KN5C05004P7--21

Price Range
$2.10 - $1.22

Stock Levels
1040 In stock
Attributes
  • Nominal Diameter
    2.500 in
  • Thread Size
    5/16-18
  • Hub Diameter
    0.980 in
  • Knob Height
    1.130 in
  • Hub Height
    0.480 in
4-Arm Knob 1.750 in 5/16-18 1.020 in Black Steel PP

KN5C10004P4--21

Price Range
$1.78 - $1.04

Stock Levels
683 In stock
Attributes
  • Nominal Diameter
    1.750 in
  • Thread Size
    5/16-18
  • Hub Diameter
    0.750 in
  • Knob Height
    1.020 in
  • Hub Height
    0.520 in
4-Arm Knob 2.500 in 1/4-20 1.130 in Black Steel PP

KN4C10004P7--21

Price Range
$2.04 - $1.18

Stock Levels
312 In stock
Attributes
  • Nominal Diameter
    2.500 in
  • Thread Size
    1/4-20
  • Hub Diameter
    0.980 in
  • Knob Height
    1.130 in
  • Hub Height
    0.480 in