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Clamping Knobs 4 Arm Male Stud Prominent Grip

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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Product SKUs information
Item Code Price range Availability Stud Length Thread Size Insert Type Insert Material Nominal Diameter Knob Material View
$1.29 - $2.23 889 In stock
0.750 in
3/8-16
Stud
Steel
2.500 in
PP
$1.08 - $1.84 426 In stock
2.500 in
5/16-18
Stud
Steel
1.750 in
PP
$1.22 - $2.10 1040 In stock
0.500 in
5/16-18
Stud
Steel
2.500 in
PP
$1.37 - $2.36 858 In stock
1.250 in
3/8-16
Stud
Steel
2.500 in
PP
$1.05 - $1.80 1997 In stock
5/16-18
Blind Hole
Steel
1.750 in
PP
$0.99 - $1.72 1490 In stock
5/16-18
Thru-Hole
Steel
1.750 in
PP
$1.14 - $1.97 490 In stock
1/4-20
Blind Hole
Steel
2.500 in
PP
$1.11 - $1.91 76 In stock
3.000 in
3/8-16
Stud
Steel
1.750 in
PP
$0.46 - $0.79 736 In stock
3.250 in
#10-24
Stud
Steel
1.150 in
PP
$1.62 - $2.80 1115 In stock
5/16-18
Blind Hole
Steel
1.730 in
TPE Overlay PP
$1.23 - $2.12 1015 In stock
5/16-18
Blind Hole
Steel
2.500 in
PP
$1.23 - $2.11 1568 In stock
0.500 in
#10-32
Stud
Steel
1.400 in
TPE Overlay PP
$1.49 - $2.57 1252 In stock
1.250 in
1/4-20
Stud
Steel
1.400 in
TPE Overlay PP
$1.76 - $3.02 1350 In stock
2.500 in
5/16-18
Stud
Steel
1.730 in
TPE Overlay PP
$1.56 - $2.68 1224 In stock
0.750 in
#10-32
Stud
Steel
1.730 in
TPE Overlay PP
$1.47 - $2.54 500 In stock
1/2-13
Blind Hole
Steel
2.500 in
PP
$1.90 - $2.24 1240 In stock
1/4-20
Blind Hole
Steel
1.400 in
TPE Overlay 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
$1.00 - $1.72 814 In stock
0.750 in
5/16-18
Stud
Steel
1.750 in
PP
    • of 5
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
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4-Arm Knob 1.750 in 5/16-18 1.020 in Black Steel PP

KN5C25004P4--21

Price Range
$1.84 - $1.08

Stock Levels
426 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
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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
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4-Arm Knob 2.500 in 3/8-16 1.130 in Black Steel PP

KN6C12504P7--21

Price Range
$2.36 - $1.37

Stock Levels
858 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
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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
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4-Arm Knob 1.750 in 5/16-18 1.020 in Black Steel PP

KN5C----4P4--21

Price Range
$1.72 - $0.99

Stock Levels
1490 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
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4-Arm Knob 2.500 in 1/4-20 1.130 in Black Steel PP

KN4C----4P7B-21

Price Range
$1.97 - $1.14

Stock Levels
490 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
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4-Arm Knob 1.750 in 3/8-16 1.020 in Black Steel PP

KN6C30004P4--21

Price Range
$1.91 - $1.11

Stock Levels
76 In stock
Attributes
  • Nominal Diameter
    1.750 in
  • Thread Size
    3/8-16
  • Hub Diameter
    0.750 in
  • Knob Height
    1.020 in
  • Hub Height
    0.520 in
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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
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4-Arm Knob 1.730 in 5/16-18 0.820 in Black Steel TPE Overlay PP

KN5C----4S4BS21

Price Range
$2.80 - $1.62

Stock Levels
1115 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
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4-Arm Knob 2.500 in 5/16-18 1.130 in Black Steel PP

KN5C----4P7B-22

Price Range
$2.12 - $1.23

Stock Levels
1015 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
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4-Arm Knob 1.400 in #10-32 0.640 in Black Steel TPE Overlay PP

KN0205004S2-S21

Price Range
$2.11 - $1.23

Stock Levels
1568 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
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4-Arm Knob 1.400 in 1/4-20 0.640 in Black Steel TPE Overlay PP

KN4C12504S2-S21

Price Range
$2.57 - $1.49

Stock Levels
1252 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
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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
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4-Arm Knob 1.730 in #10-32 0.820 in Black Steel TPE Overlay PP

KN0207504S4-S21

Price Range
$2.68 - $1.56

Stock Levels
1224 In stock
Attributes
  • Nominal Diameter
    1.730 in
  • Thread Size
    #10-32
  • Hub Diameter
    0.750 in
  • Knob Height
    0.820 in
  • Hub Height
    0.250 in
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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
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4-Arm Knob 1.400 in 1/4-20 0.640 in Black Steel TPE Overlay PP

KN4C----4S2BS21

Price Range
$2.24 - $1.90

Stock Levels
1240 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
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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
Quick View
View Product >
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
Quick View
View Product >
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
Quick View
View Product >