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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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55 results
Product SKUs information
Item Code Price range Availability Stud Length Knob Diameter Thread Size Insert Type Insert Material Knob Material View
KNS1200A $0.6403 - $1.9786 Request the lead time here
1.575 in
1/4-20
Blind Hole
Steel
PP
$1.8061 - $2.407 2297 In stock
1.969 in
5/16-18
Thru-Hole
Brass
Phenolic
KSP1300A $2.0086 - $2.6798 13700 In stock
2.362 in
3/8-16
Thru-Hole
Brass
Phenolic
KNS2200A $0.6096 - $1.8708 5172 In stock
0.750 in
1.575 in
1/4-20
Stud
Steel
PP
KSP2100A $1.9942 - $2.6556 3531 In stock
1.181 in
2.362 in
3/8-16
Stud
Steel
Phenolic
$0.6949 - $2.1353 2567 In stock
1.375 in
1.575 in
1/4-20
Stud
Steel
PP
$2.6075 - $3.4762 Request the lead time here
1.575 in
3.150 in
1/2-13
Stud
Steel
Phenolic
$1.5692 - $2.0956 444 In stock
0.984 in
1.969 in
5/16-18
Stud
Steel
Phenolic
$2.00 - $4.35 990 In stock
0.630 in
1.400 in
1/4-20
Stud
Steel
TPE
$1.16 - $2.52 490 In stock
2.500 in
3/8-16
Thru-Hole
Steel
PP
$0.81 - $1.76 2445 In stock
1.750 in
1/4-20
Blind Hole
Steel
PP
$0.89 - $1.94 1190 In stock
1.730 in
1/4-20
Stop Nut
Steel
PP
$0.81 - $1.77 1490 In stock
1.750 in
5/16-18
Thru-Hole
Steel
PP
$0.81 - $1.76 803 In stock
1.400 in
1/4-20
Blind Hole
Brass
PP
$0.81 - $1.77 1997 In stock
1.750 in
5/16-18
Blind Hole
Steel
PP
$1.14 - $2.49 950 In stock
2.500 in
1/4-20
Thru-Hole
Steel
PP
$0.98 - $2.14 1175 In stock
0.370 in
1.400 in
1/4-20
Stud
Steel
PP
$0.86 - $1.87 1580 In stock
0.620 in
1.150 in
1/4-20
Stud
Brass
PP
$1.49 - $3.25 1040 In stock
0.500 in
2.500 in
5/16-18
Stud
Steel
PP
$2.01 - $4.38 1000 In stock
0.750 in
1.400 in
10-32
Stud
Steel
TPE
  • of 3
4-Arm Knob - Knob Diameter 40 mm | 1.575 in; Thread Size 1/4-20

KNS1200A

Price Range
$1.9786 - $0.6403

Stock Levels
Request the lead time here
Attributes
  • Knob Diameter
    1.575 in
  • Thread Size
    1/4-20
  • Finish
  • Mounting Method
    Threaded Blind
  • Insert Material
    Steel
4-Arm Knob - Knob Diameter 50 mm | 1.969 in; Thread Size 5/16-18

KSP1100A

Price Range
$2.407 - $1.8061

Stock Levels
2297 In stock
Attributes
  • Knob Diameter
    1.969 in
  • Thread Size
    5/16-18
  • Finish
    High-Gloss
  • Mounting Method
    Threaded Through-Hole
  • Insert Material
    Brass
4-Arm Knob - Knob Diameter 60 mm | 2.362 in; Thread Size 3/8-16

KSP1300A

Price Range
$2.6798 - $2.0086

Stock Levels
13700 In stock
Attributes
  • Knob Diameter
    2.362 in
  • Thread Size
    3/8-16
  • Finish
    High-Gloss
  • Mounting Method
    Threaded Through-Hole
  • Insert Material
    Brass
4-Arm Knob - Knob Diameter 40 mm | 1.575 in; Thread Size 1/4-20; Stud Length 19.1 mm | 0.750 in

KNS2200A

Price Range
$1.8708 - $0.6096

Stock Levels
5172 In stock
Attributes
  • Knob Diameter
    1.575 in
  • Stud Length
    0.750 in
  • Thread Size
    1/4-20
  • Finish
  • Mounting Method
    Threaded Stud
4-Arm Knob - Knob Diameter 60 mm | 2.362 in; Thread Size 3/8-16; Stud Length 30 mm | 1.181 in

KSP2100A

Price Range
$2.6556 - $1.9942

Stock Levels
3531 In stock
Attributes
  • Knob Diameter
    2.362 in
  • Stud Length
    1.181 in
  • Thread Size
    3/8-16
  • Finish
  • Mounting Method
    Threaded Stud
4-Arm Knob - Knob Diameter 40 mm | 1.575 in; Thread Size 1/4-20; Stud Length 34.9 mm | 1.375 in

KNS2300A

Price Range
$2.1353 - $0.6949

Stock Levels
2567 In stock
Attributes
  • Knob Diameter
    1.575 in
  • Stud Length
    1.375 in
  • Thread Size
    1/4-20
  • Mounting Method
    Threaded Stud
  • Insert Material
    Steel
4-Arm Knob - Knob Diameter 80 mm | 3.150 in; Thread Size 1/2-13; Stud Length 40 mm | 1.575 in

KSP2200A

Price Range
$3.4762 - $2.6075

Stock Levels
Request the lead time here
Attributes
  • Knob Diameter
    3.150 in
  • Stud Length
    1.575 in
  • Thread Size
    1/2-13
  • Finish
  • Mounting Method
    Threaded Stud
4-Arm Knob - Knob Diameter 50 mm | 1.969 in; Thread Size 5/16-18; Stud Length 25 mm | 0.984 in

KSP2000A

Price Range
$2.0956 - $1.5692

Stock Levels
444 In stock
Attributes
  • Knob Diameter
    1.969 in
  • Stud Length
    0.984 in
  • Thread Size
    5/16-18
  • Finish
  • Mounting Method
    Threaded Stud
N/A - Knob Diameter 35.6 mm | 1.400 in; Thread Size 1/4-20; Stud Length 16 mm | 0.630 in

KN4C06254S2-S21

Price Range
$4.35 - $2.00

Stock Levels
990 In stock
Attributes
  • Knob Diameter
    1.400 in
  • Knob Height
    0.640 in
  • Hub Diameter
    0.550 in
  • Hub Height
    0.180 in
  • Stud Length
    0.630 in
N/A - Knob Diameter 63.5 mm | 2.500 in; Thread Size 3/8-16; Knob Height 28.7 mm | 1.130 in

KN6C----4P7--21

Price Range
$2.52 - $1.16

Stock Levels
490 In stock
Attributes
  • Knob Diameter
    2.500 in
  • Knob Height
    1.130 in
  • Hub Diameter
    0.980 in
  • Hub Height
    0.480 in
  • Thread Size
    3/8-16
N/A - Knob Diameter 44.5 mm | 1.750 in; Thread Size 1/4-20; Knob Height 25.9 mm | 1.020 in

KN4C----4P4B-21

Price Range
$1.76 - $0.81

Stock Levels
2445 In stock
Attributes
  • Knob Diameter
    1.750 in
  • Knob Height
    1.020 in
  • Hub Diameter
    0.750 in
  • Hub Height
    0.520 in
  • Thread Size
    1/4-20
N/A - Knob Diameter 43.9 mm | 1.730 in; Thread Size 1/4-20; Knob Height 20.8 mm | 0.820 in

KN4C----4S4BL22

Price Range
$1.94 - $0.89

Stock Levels
1190 In stock
Attributes
  • Knob Diameter
    1.730 in
  • Knob Height
    0.820 in
  • Hub Diameter
    0.750 in
  • Hub Height
    0.250 in
  • Thread Size
    1/4-20
N/A - Knob Diameter 44.5 mm | 1.750 in; Thread Size 5/16-18; Knob Height 25.9 mm | 1.020 in

KN5C----4P4--21

Price Range
$1.77 - $0.81

Stock Levels
1490 In stock
Attributes
  • Knob Diameter
    1.750 in
  • Knob Height
    1.020 in
  • Hub Diameter
    0.750 in
  • Hub Height
    0.520 in
  • Thread Size
    5/16-18
N/A - Knob Diameter 35.6 mm | 1.400 in; Thread Size 1/4-20; Knob Height 16.3 mm | 0.640 in

KN4C----4S2B-90

Price Range
$1.76 - $0.81

Stock Levels
803 In stock
Attributes
  • Knob Diameter
    1.400 in
  • Knob Height
    0.640 in
  • Hub Diameter
    0.550 in
  • Hub Height
    0.180 in
  • Thread Size
    1/4-20
4-Arm Knob - Knob Diameter 44.5 mm | 1.750 in; Thread Size 5/16-18; Knob Height 25.9 mm | 1.020 in

KN5C----4P4B-22

Price Range
$1.77 - $0.81

Stock Levels
1997 In stock
Attributes
  • Knob Diameter
    1.750 in
  • Knob Height
    1.020 in
  • Hub Diameter
    0.750 in
  • Hub Height
    0.520 in
  • Thread Size
    5/16-18
N/A - Knob Diameter 63.5 mm | 2.500 in; Thread Size 1/4-20; Knob Height 28.7 mm | 1.130 in

KN4C----4P7--21

Price Range
$2.49 - $1.14

Stock Levels
950 In stock
Attributes
  • Knob Diameter
    2.500 in
  • Knob Height
    1.130 in
  • Hub Diameter
    0.980 in
  • Hub Height
    0.480 in
  • Thread Size
    1/4-20
N/A - Knob Diameter 35.6 mm | 1.400 in; Thread Size 1/4-20; Stud Length 9.4 mm | 0.370 in

KN4C03754S2--21

Price Range
$2.14 - $0.98

Stock Levels
1175 In stock
Attributes
  • Knob Diameter
    1.400 in
  • Knob Height
    0.640 in
  • Hub Diameter
    0.550 in
  • Hub Height
    0.180 in
  • Stud Length
    0.370 in
N/A - Knob Diameter 29.2 mm | 1.150 in; Thread Size 1/4-20; Stud Length 15.7 mm | 0.620 in

KN4C06254S1--90

Price Range
$1.87 - $0.86

Stock Levels
1580 In stock
Attributes
  • Knob Diameter
    1.150 in
  • Knob Height
    0.650 in
  • Hub Diameter
    0.500 in
  • Hub Height
    0.250 in
  • Stud Length
    0.620 in
N/A - Knob Diameter 63.5 mm | 2.500 in; Thread Size 5/16-18; Stud Length 12.7 mm | 0.500 in

KN5C05004P7--21

Price Range
$3.25 - $1.49

Stock Levels
1040 In stock
Attributes
  • Knob Diameter
    2.500 in
  • Knob Height
    1.130 in
  • Hub Diameter
    0.980 in
  • Hub Height
    0.480 in
  • Stud Length
    0.500 in
N/A - Knob Diameter 35.6 mm | 1.400 in; Thread Size 10-32; Stud Length 19.1 mm | 0.750 in

KN0207504S2-S21

Price Range
$4.38 - $2.01

Stock Levels
1000 In stock
Attributes
  • Knob Diameter
    1.400 in
  • Knob Height
    0.640 in
  • Hub Diameter
    0.550 in
  • Hub Height
    0.180 in
  • Stud Length
    0.750 in