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Retaining Washers

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Retaining Washers, also known as Retention Washers or Anti-Loss Washers, are fasteners that are designed to lock in place after installation - creating a secure fastening assembly. The are designed so the inside diameter grips the outside of a screw shank. The washer easily slides on to screw, but is retained on the screw once assembled.

Our retainer washer range includes a selection of nylon washers, including; Metric Retaining Washers made from natural Nylon, and a wide selection of Retaining Flat Washers. Also included are Sealing and Retaining, that allow premlinary mounting of a bolt before securing with a nut. The tapered design retains the screw prior to assembly - it cold forms and fully enters the pitch of the screw to provide sealing. Both the Retaining Flat Washers, and the Sealing and Retaining Washers are made from UL94 V2 rated, natural Nylon 6/6. Our plastic retaining washer offering also features a Polyethylene (PE) option, with color options including; Red, Grey and Blue.

Self Retaining Washers are ideal for applications requiring pre-assembly of the screw and washer, helping to reduce final assembly cost and save time.

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Product SKUs information
Item Code Price range Availability Material Inside Diameter Compatible Screw Sizes (All) Outside Diameter Thickness Buy
$0.0583 - $0.0972 In production
LDPE
0.331 in
M7
0.669 in
0.079 in
$0.0583 - $0.0972 In production
LDPE
0.331 in
M7
0.669 in
0.079 in
$0.037 - $0.041 36400 In stock
LDPE
0.106 in
M2.5
0.256 in
0.043 in
$0.0419 - $0.0464 In production
LDPE
0.252 in
M6
0.472 in
0.063 in
RWM350A $0.1071 - $0.6536 In production
Nylon
0.209 in
M5
0.335 in
0.11 in
16FWRT437062 $0.0703 - $0.1695 9954 In stock
PA
0.571 in
1.031 in
0.063 in
RWM400A $0.1089 - $0.6645 In production
Nylon
0.252 in
M6
0.709 in
0.079 in
$0.0413 - $0.0687 3400 In stock
LDPE
0.252 in
M6
0.472 in
0.063 in
16FWRT010062 $0.0398 - $0.0526 In production
PA
0.276 in
0.453 in
0.063 in
RWM100A $0.0885 - $0.5403 5100 In stock
Nylon
0.126 in
M3
0.354 in
0.059 in
RWM200A $0.1043 - $0.6383 1300 In stock
Nylon
0.169 in
M4
0.276 in
0.091 in
$0.0583 - $0.0972 1500 In stock
LDPE
0.331 in
M7
0.669 in
0.079 in
16FWRT002062 $0.0227 - $0.0301 249000 In stock
PA
0.114 in
0.205 in
0.063 in
RWM550A $0.1546 - $0.949 In production
Nylon
0.413 in
M10
0.827 in
0.098 in
16FWRT004062 $0.0227 - $0.0301 34000 In stock
PA
0.157 in
0.268 in
0.063 in
RWM500A $0.136 - $0.8312 In production
Nylon
0.331 in
M8
0.512 in
0.11 in
16FWRT008045 $0.0429 - $0.0567 105000 In stock
PA
0.217 in
0.453 in
0.043 in
$0.1063 - $0.649 In production
Nylon
0.209 in
M5
0.453 in
0.055 in
$0.0373 - $0.0414 In production
LDPE
0.106 in
M2.3
0.256 in
0.043 in
RWM150A $0.0982 - $0.60 4950 In stock
Nylon
0.126 in
M3
0.217 in
0.087 in
  • of 4
Natural Nylon Anti-Loss Washer Retaining Washer - 4.3 mm | 0.169 in; 7.0 mm | 0.276 in; Thickness 2.3 mm | 0.091 in; Compatible Screw Sizes M4

RWM200A

Price Range
$0.6383 - $0.1043

Stock Levels
1300 In stock
Attributes
  • Inside Diameter
    0.169 in
  • Outside Diameter
    0.276 in
  • Thickness
    0.091 in
  • Color
    Natural
  • Compatible Screw Sizes (All)
    M4
Gray LDPE Anti-Loss Washer Retaining Washer - 8.4 mm | 0.331 in; 17.0 mm | 0.669 in; Thickness 2.0 mm | 0.079 in; Compatible Screw Sizes M7

015108000203

Price Range
$0.0972 - $0.0583

Stock Levels
In production
Attributes
  • Inside Diameter
    0.331 in
  • Outside Diameter
    0.669 in
  • Thickness
    0.079 in
  • Color
    Gray
  • Compatible Screw Sizes (All)
    M7
Natural PA Anti-Loss Washer Retaining Washer - 14.5 mm | 0.571 in; 26.2 mm | 1.031 in; Thickness 1.6 mm | 0.063 in; Compatible Screw Sizes 7/16

16FWRT437062

Price Range
$0.1695 - $0.0703

Stock Levels
9954 In stock
Attributes
  • Inside Diameter
    0.571 in
  • Outside Diameter
    1.031 in
  • Overall Height
    0.063 in
  • Thickness
    0.063 in
  • Color
    Natural
Natural PA Anti-Loss Washer Retaining Washer - 4 mm | 0.156 in; 6.8 mm | 0.266 in; Thickness 1.6 mm | 0.062 in; Compatible Screw Sizes 4

16FWRT004062

Price Range
$0.0301 - $0.0227

Stock Levels
34000 In stock
Attributes
  • Inside Diameter
    0.157 in
  • Outside Diameter
    0.268 in
  • Overall Height
    0.063 in
  • Thickness
    0.063 in
  • Color
    Natural
Natural Nylon Anti-Loss Washer Retaining Washer - 5.3 mm | 0.209 in; 11.5 mm | 0.453 in; Thickness 1.4 mm | 0.055 in; Compatible Screw Sizes M5

RWM300A

Price Range
$0.649 - $0.1063

Stock Levels
In production
Attributes
  • Inside Diameter
    0.209 in
  • Outside Diameter
    0.453 in
  • Thickness
    0.055 in
  • Color
    Natural
  • Compatible Screw Sizes (All)
    M5
Natural Nylon Anti-Loss Washer Retaining Washer - 5.3 mm | 0.209 in; 8.5 mm | 0.335 in; Thickness 2.8 mm | 0.11 in; Compatible Screw Sizes M5

RWM350A

Price Range
$0.6536 - $0.1071

Stock Levels
In production
Attributes
  • Inside Diameter
    0.209 in
  • Outside Diameter
    0.335 in
  • Thickness
    0.11 in
  • Color
    Natural
  • Compatible Screw Sizes (All)
    M5
Natural Nylon Anti-Loss Washer Retaining Washer - 6.4 mm | 0.252 in; 18.0 mm | 0.709 in; Thickness 2.0 mm | 0.079 in; Compatible Screw Sizes M6

RWM400A

Price Range
$0.6645 - $0.1089

Stock Levels
In production
Attributes
  • Inside Diameter
    0.252 in
  • Outside Diameter
    0.709 in
  • Thickness
    0.079 in
  • Color
    Natural
  • Compatible Screw Sizes (All)
    M6
Blue LDPE Anti-Loss Washer Retaining Washer - 6.4 mm | 0.252 in; 12.0 mm | 0.472 in; Thickness 1.6 mm | 0.063 in; Compatible Screw Sizes M6

015206008703

Price Range
$0.0464 - $0.0419

Stock Levels
In production
Attributes
  • Inside Diameter
    0.252 in
  • Outside Diameter
    0.472 in
  • Thickness
    0.063 in
  • Color
    Blue
  • Compatible Screw Sizes (All)
    M6
Natural Nylon Anti-Loss Washer Retaining Washer - 8.4 mm | 0.331 in; 13.0 mm | 0.512 in; Thickness 2.8 mm | 0.11 in; Compatible Screw Sizes M8

RWM500A

Price Range
$0.8312 - $0.136

Stock Levels
In production
Attributes
  • Inside Diameter
    0.331 in
  • Outside Diameter
    0.512 in
  • Thickness
    0.11 in
  • Color
    Natural
  • Compatible Screw Sizes (All)
    M8
Blue LDPE Anti-Loss Washer Retaining Washer - 8.4 mm | 0.331 in; 17.0 mm | 0.669 in; Thickness 2.0 mm | 0.079 in; Compatible Screw Sizes M7

015208008703

Price Range
$0.0972 - $0.0583

Stock Levels
1500 In stock
Attributes
  • Inside Diameter
    0.331 in
  • Outside Diameter
    0.669 in
  • Thickness
    0.079 in
  • Color
    Blue
  • Compatible Screw Sizes (All)
    M7
Natural PA Anti-Loss Washer Retaining Washer - 5.5 mm | 0.217 in; 11.5 mm | 0.453 in; Thickness 1.1 mm | 0.043 in; Compatible Screw Sizes 8

16FWRT008045

Price Range
$0.0567 - $0.0429

Stock Levels
105000 In stock
Attributes
  • Inside Diameter
    0.217 in
  • Outside Diameter
    0.453 in
  • Overall Height
    0.043 in
  • Thickness
    0.043 in
  • Color
    Natural
Natural Nylon Anti-Loss Washer Retaining Washer - 10.5 mm | 0.413 in; 21.0 mm | 0.827 in; Thickness 2.5 mm | 0.098 in; Compatible Screw Sizes M10

RWM550A

Price Range
$0.949 - $0.1546

Stock Levels
In production
Attributes
  • Inside Diameter
    0.413 in
  • Outside Diameter
    0.827 in
  • Thickness
    0.098 in
  • Color
    Natural
  • Compatible Screw Sizes (All)
    M10
Red LDPE Anti-Loss Washer Retaining Washer - 2.7 mm | 0.106 in; 6.5 mm | 0.256 in; Thickness 1.1 mm | 0.043 in; Compatible Screw Sizes M2.5

015002500503

Price Range
$0.041 - $0.037

Stock Levels
36400 In stock
Attributes
  • Inside Diameter
    0.106 in
  • Outside Diameter
    0.256 in
  • Thickness
    0.043 in
  • Color
    Red
  • Compatible Screw Sizes (All)
    M2.5
Natural PA Anti-Loss Washer Retaining Washer - 7 mm | 0.276 in; 11.5 mm | 0.453 in; Thickness 1.6 mm | 0.063 in; Compatible Screw Sizes 10

16FWRT010062

Price Range
$0.0526 - $0.0398

Stock Levels
In production
Attributes
  • Inside Diameter
    0.276 in
  • Outside Diameter
    0.453 in
  • Overall Height
    0.063 in
  • Thickness
    0.063 in
  • Color
    Natural
Red LDPE Anti-Loss Washer Retaining Washer - 6.4 mm | 0.252 in; 12.0 mm | 0.472 in; Thickness 1.6 mm | 0.063 in; Compatible Screw Sizes M6

015006000503

Price Range
$0.0687 - $0.0413

Stock Levels
3400 In stock
Attributes
  • Inside Diameter
    0.252 in
  • Outside Diameter
    0.472 in
  • Thickness
    0.063 in
  • Color
    Red
  • Compatible Screw Sizes (All)
    M6
Red LDPE Anti-Loss Washer Retaining Washer - 8.4 mm | 0.331 in; 17.0 mm | 0.669 in; Thickness 2.0 mm | 0.079 in; Compatible Screw Sizes M7

015008000503

Price Range
$0.0972 - $0.0583

Stock Levels
In production
Attributes
  • Inside Diameter
    0.331 in
  • Outside Diameter
    0.669 in
  • Thickness
    0.079 in
  • Color
    Red
  • Compatible Screw Sizes (All)
    M7
Gray LDPE Anti-Loss Washer Retaining Washer - 2.7 mm | 0.106 in; 6.5 mm | 0.256 in; Thickness 1.1 mm | 0.043 in; Compatible Screw Sizes M2.3

015102500203

Price Range
$0.0414 - $0.0373

Stock Levels
In production
Attributes
  • Inside Diameter
    0.106 in
  • Outside Diameter
    0.256 in
  • Thickness
    0.043 in
  • Color
    Gray
  • Compatible Screw Sizes (All)
    M2.3
Natural Nylon Anti-Loss Washer Retaining Washer - 3.2 mm | 0.126 in; 9.0 mm | 0.354 in; Thickness 1.5 mm | 0.059 in; Compatible Screw Sizes M3

RWM100A

Price Range
$0.5403 - $0.0885

Stock Levels
5100 In stock
Attributes
  • Inside Diameter
    0.126 in
  • Outside Diameter
    0.354 in
  • Thickness
    0.059 in
  • Color
    Natural
  • Compatible Screw Sizes (All)
    M3
Natural PA Anti-Loss Washer Retaining Washer - 2.9 mm | 0.115 in; 5.2 mm | 0.203 in; Thickness 1.6 mm | 0.062 in; Compatible Screw Sizes 2

16FWRT002062

Price Range
$0.0301 - $0.0227

Stock Levels
249000 In stock
Attributes
  • Inside Diameter
    0.114 in
  • Outside Diameter
    0.205 in
  • Overall Height
    0.063 in
  • Thickness
    0.063 in
  • Color
    Natural
Natural Nylon Anti-Loss Washer Retaining Washer - 3.2 mm | 0.126 in; 5.5 mm | 0.217 in; Thickness 2.2 mm | 0.087 in; Compatible Screw Sizes M3

RWM150A

Price Range
$0.60 - $0.0982

Stock Levels
4950 In stock
Attributes
  • Inside Diameter
    0.126 in
  • Outside Diameter
    0.217 in
  • Thickness
    0.087 in
  • Color
    Natural
  • Compatible Screw Sizes (All)
    M3