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Anu-Lok Cap Head Captive Screws

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Anu-Lok Cap Head Captive Screws are intended to offer a secure and vibration-resistant attachment, while remaining permanently connected. Features a cap head design that enables simple torque application with tools like hexagonal keys. Anu-Lok 180 (AnuLok) is a reusable nylon patch that works like to a nylon nut. During installation, the nylon patch contracts to fill the gap within the threads.

The specialised retention mechanism prevents complete detachment from the assembly, due to vibration or mechanical stress, while allowing for repeated fastening and unfastening. This feature is useful in applications requiring maintenance or regular access. Applications include electronic enclosures, machinery guards and structural components.

Please note: These screws have a reduced diameter shank and should not be tightened to the recommended torque for an equivalent machine screw of size d1.

  • The screws captive nature complies with the Machinery Directive 2006/42/EC (equivalent to ISO 4762) that guarantees compliance with safety and regulatory standards, especially in industries where loose hardware may represent a risk.
Material: 303 Stainless with thread lock Series Code: SRP0154

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Product SKUs information
Essentra Part Number Price range Availability d1 l2 025 A/F H1 max d3 max d2 a012 View
R 140,2801 - R 200,3089 Request the lead time here
M12
15.0
10.0
12.0
18.0
8.0
R 93,2362 - R 133,2554 Request the lead time here
M8
10.0
6.0
8.0
13.0
6.0
R 113,4587 - R 161,9926 Request the lead time here
M10
12.5
8.0
10.0
16.0
7.5
R 166,0371 - R 237,1351 Request the lead time here
M16
20.0
14.0
16.0
24.0
12.0
R 145,176 - R 207,3335 Request the lead time here
M12
15.0
10.0
12.0
18.0
8.0
R 174,5518 - R 249,4814 Request the lead time here
M16
20.0
14.0
16.0
24.0
12.0
R 183,4923 - R 262,0406 Request the lead time here
M16
20.0
14.0
16.0
24.0
12.0
R 304,1885 - R 434,4638 Request the lead time here
M20
25.0
19.0
20.0
30.0
16.0
R 393,1674 - R 561,546 Request the lead time here
M20
25.0
19.0
20.0
30.0
16.0
R 348,678 - R 498,1113 Request the lead time here
M20
25.0
19.0
20.0
30.0
16.0
R 259,9119 - R 371,242 Request the lead time here
M20
25.0
19.0
20.0
30.0
16.0
R 166,0371 - R 237,1351 Request the lead time here
M12
15.0
10.0
12.0
18.0
8.0
R 256,5061 - R 366,5589 Request the lead time here
M16
20.0
14.0
16.0
24.0
12.0
R 63,4347 - R 90,4689 Request the lead time here
M2.5
3.0
2.0
2.5
4.5
1.8
R 62,5832 - R 89,4046 Request the lead time here
M2.5
3.0
2.0
2.5
4.5
1.8
R 78,7612 - R 112,6072 Request the lead time here
M6
7.5
5.0
6.0
10.0
4.2
R 95,152 - R 135,8098 Request the lead time here
M6
7.5
5.0
6.0
10.0
4.2
R 82,1671 - R 117,2903 Request the lead time here
M8
10.0
6.0
8.0
13.0
6.0
R 75,1424 - R 107,2855 Request the lead time here
M4
6.0
3.0
4.0
7.0
2.8
R 68,7564 - R 98,3451 Request the lead time here
M5
7.5
4.0
5.0
8.5
3.7
    • of 4
Captive Screw M12 12.0 35.0 303 Stainless with thread lock

20758462

Price Range
R 200,3089 - R 140,2801

Stock Levels
Request the lead time here
Attributes
  • d1
    M12
  • l1 025
    35.0
  • d2 a012
    8.0
  • d3 max
    18.0
  • d4 min
    13.2
Quick View
View Product >
Captive Screw M8 8.0 45.0 303 Stainless with thread lock

20758318

Price Range
R 133,2554 - R 93,2362

Stock Levels
Request the lead time here
Attributes
  • d1
    M8
  • l1 025
    45.0
  • d2 a012
    6.0
  • d3 max
    13.0
  • d4 min
    8.5
Quick View
View Product >
Captive Screw M10 10.0 25.0 303 Stainless with thread lock

20758363

Price Range
R 161,9926 - R 113,4587

Stock Levels
Request the lead time here
Attributes
  • d1
    M10
  • l1 025
    25.0
  • d2 a012
    7.5
  • d3 max
    16.0
  • d4 min
    10.6
Quick View
View Product >
Captive Screw M16 16.0 30.0 303 Stainless with thread lock

20758523

Price Range
R 237,1351 - R 166,0371

Stock Levels
Request the lead time here
Attributes
  • d1
    M16
  • l1 025
    30.0
  • d2 a012
    12.0
  • d3 max
    24.0
  • d4 min
    17.5
Quick View
View Product >
Captive Screw M12 12.0 40.0 303 Stainless with thread lock

20758479

Price Range
R 207,3335 - R 145,176

Stock Levels
Request the lead time here
Attributes
  • d1
    M12
  • l1 025
    40.0
  • d2 a012
    8.0
  • d3 max
    18.0
  • d4 min
    13.2
Quick View
View Product >
Captive Screw M16 16.0 35.0 303 Stainless with thread lock

20758530

Price Range
R 249,4814 - R 174,5518

Stock Levels
Request the lead time here
Attributes
  • d1
    M16
  • l1 025
    35.0
  • d2 a012
    12.0
  • d3 max
    24.0
  • d4 min
    17.5
Quick View
View Product >
Captive Screw M16 16.0 40.0 303 Stainless with thread lock

20758547

Price Range
R 262,0406 - R 183,4923

Stock Levels
Request the lead time here
Attributes
  • d1
    M16
  • l1 025
    40.0
  • d2 a012
    12.0
  • d3 max
    24.0
  • d4 min
    17.5
Quick View
View Product >
Captive Screw M20 20.0 60.0 303 Stainless with thread lock

20758615

Price Range
R 434,4638 - R 304,1885

Stock Levels
Request the lead time here
Attributes
  • d1
    M20
  • l1 025
    60.0
  • d2 a012
    16.0
  • d3 max
    30.0
  • d4 min
    22.0
Quick View
View Product >
Captive Screw M20 20.0 100.0 303 Stainless with thread lock

20758639

Price Range
R 561,546 - R 393,1674

Stock Levels
Request the lead time here
Attributes
  • d1
    M20
  • l1 025
    100.0
  • d2 a012
    16.0
  • d3 max
    30.0
  • d4 min
    22.0
Quick View
View Product >
Captive Screw M20 20.0 80.0 303 Stainless with thread lock

20758622

Price Range
R 498,1113 - R 348,678

Stock Levels
Request the lead time here
Attributes
  • d1
    M20
  • l1 025
    80.0
  • d2 a012
    16.0
  • d3 max
    30.0
  • d4 min
    22.0
Quick View
View Product >
Captive Screw M20 20.0 40.0 303 Stainless with thread lock

20758608

Price Range
R 371,242 - R 259,9119

Stock Levels
Request the lead time here
Attributes
  • d1
    M20
  • l1 025
    40.0
  • d2 a012
    16.0
  • d3 max
    30.0
  • d4 min
    22.0
Quick View
View Product >
Captive Screw M12 12.0 60.0 303 Stainless with thread lock

20758509

Price Range
R 237,1351 - R 166,0371

Stock Levels
Request the lead time here
Attributes
  • d1
    M12
  • l1 025
    60.0
  • d2 a012
    8.0
  • d3 max
    18.0
  • d4 min
    13.2
Quick View
View Product >
Captive Screw M16 16.0 80.0 303 Stainless with thread lock

20758585

Price Range
R 366,5589 - R 256,5061

Stock Levels
Request the lead time here
Attributes
  • d1
    M16
  • l1 025
    80.0
  • d2 a012
    12.0
  • d3 max
    24.0
  • d4 min
    17.5
Quick View
View Product >
Captive Screw M2.5 2.5 10.0 303 Stainless with thread lock

20757892

Price Range
R 90,4689 - R 63,4347

Stock Levels
Request the lead time here
Attributes
  • d1
    M2.5
  • l1 025
    10.0
  • d2 a012
    1.8
  • d3 max
    4.5
  • d4 min
    2.8
Quick View
View Product >
Captive Screw M2.5 2.5 8.0 303 Stainless with thread lock

20757885

Price Range
R 89,4046 - R 62,5832

Stock Levels
Request the lead time here
Attributes
  • d1
    M2.5
  • l1 025
    8.0
  • d2 a012
    1.8
  • d3 max
    4.5
  • d4 min
    2.8
Quick View
View Product >
Captive Screw M6 6.0 40.0 303 Stainless with thread lock

20758219

Price Range
R 112,6072 - R 78,7612

Stock Levels
Request the lead time here
Attributes
  • d1
    M6
  • l1 025
    40.0
  • d2 a012
    4.2
  • d3 max
    10.0
  • d4 min
    6.5
Quick View
View Product >
Captive Screw M6 6.0 80.0 303 Stainless with thread lock

20758240

Price Range
R 135,8098 - R 95,152

Stock Levels
Request the lead time here
Attributes
  • d1
    M6
  • l1 025
    80.0
  • d2 a012
    4.2
  • d3 max
    10.0
  • d4 min
    6.5
Quick View
View Product >
Captive Screw M8 8.0 25.0 303 Stainless with thread lock

20758271

Price Range
R 117,2903 - R 82,1671

Stock Levels
Request the lead time here
Attributes
  • d1
    M8
  • l1 025
    25.0
  • d2 a012
    6.0
  • d3 max
    13.0
  • d4 min
    8.5
Quick View
View Product >
Captive Screw M4 4.0 40.0 303 Stainless with thread lock

20758059

Price Range
R 107,2855 - R 75,1424

Stock Levels
Request the lead time here
Attributes
  • d1
    M4
  • l1 025
    40.0
  • d2 a012
    2.8
  • d3 max
    7.0
  • d4 min
    4.5
Quick View
View Product >
Captive Screw M5 5.0 16.0 303 Stainless with thread lock

20758080

Price Range
R 98,3451 - R 68,7564

Stock Levels
Request the lead time here
Attributes
  • d1
    M5
  • l1 025
    16.0
  • d2 a012
    3.7
  • d3 max
    8.5
  • d4 min
    5.5
Quick View
View Product >