Structural Washers (31 Products)

APPROVED VENDOR

Fits Bolt Size Max. Thickness For Screw Size Min. Thickness Thickness Thickness Tolerance Square Width Type Pack Qty Price
M8
5.6 mm
M8
3.6 mm
4.6 mm
-1 mm to +1 mm
22 mm
Beveled Square For Leveling
10
$17.32
M10
4.6 mm
M10
1.5 mm
4.6 mm
-1 mm to +1 mm
22 mm
Beveled Square For Leveling
10
$17.53
M12
7.4 mm
M12
5 mm
6.2 mm
-1.2 mm to +1.2 mm
26 mm
Beveled Square For Leveling
10
$18.61
M16
-
-
-
7.5 mm
-1.2 mm to +1.2 mm
-
-
10
$24.79
M20
9.2 mm
M20
-
9.2 mm
-1.2 mm to +1.2 mm
40 mm
Beveled Square For Leveling
5
$20.18
M22
10 mm
M22
-
10 mm
-1.2 mm to +1.2 mm
44 mm
Beveled Square For Leveling
5
$34.04

Fits Bolt Size Grade Max. Thickness For Screw Size Min. Thickness Thickness Material Grade/class Thickness Tolerance Pack Qty Price
1/2"
-
0.177"
1/2"
0.097"
0.097" to 0.177"
Ungraded
0.097" to 0.177"
50
$16.20
5/8"
Non Graded
0.177"
5/8"
0.122"
0.097" to 0.177"
Ungraded
0.122" to 0.177"
50
$26.57
3/4"
Non Graded
0.177"
3/4"
0.122"
0.097" to 0.177"
Ungraded
0.122" to 0.177"
25
$14.86
1"
Non Graded
0.177"
1"
0.136"
0.097" to 0.177"
Ungraded
0.136" to 0.178"
10
$12.21
M12
Grade 2
3"
M12
3"
3 mm
Grade 300HV
-
400
$126.65
M16
Grade 2
4"
M16
4"
4 mm
Grade 300HV
-
200
$126.65
M20
Grade 2
4"
M20
4"
4 mm
Grade 300HV
-
200
$168.86
M22
Grade 2
4"
M22
4"
4 mm
Grade 300HV
-
200
$235.07
M24
Grade 2
4"
M24
4"
4 mm
Grade 300HV
-
200
$375.16
M27
Grade 2
-
-
-
5 mm
-
-
100
$194.19
GRAINGER

Fits Bolt Size Max. Thickness For Screw Size Min. Thickness Thickness Type Grade Material Grade/class Pack Qty Price
M12
3"
M12
3"
3 mm
Standard
Grade 2
Grade 300HV
400
$774.71
M16
4"
M16
4"
4 mm
Standard
Grade 2
Grade 300HV
1
$174.27
M20
4"
M20
4"
4 mm
Standard
Grade 2
Grade 300HV
200
$206.00
M22
4"
M22
4"
4 mm
Standard
Grade 2
Grade 300HV
200
$307.14
M24
4 mm
M24
4 mm
4 mm
Standard
Grade 2
Grade 300HV
200
$234.15
M27
5"
M27
5"
5 mm
Standard
Grade 2
Grade 300HV
100
$238.03
APPROVED VENDOR

Thickness Finish Material Pack Qty Price
1/8" to 11/32"
Galvanized
Iron
600
$1,224.48
3/16" to 7/16"
Plain
Iron
300
$407.24
3/16" to 7/16"
Galvanized
Iron
300
$572.20
GRAINGER

fits bolt sizetypemax. thicknessfor screw sizemin. thicknesssquare widthdimensional standards Pkg. Qty. Price
1/2"
Beveled Square For Leveling
0.348"
1/2"
0.156"
1 1/4"
Ansi/Asme B18.23.1
 300
$75.63
GRAINGER

fits bolt sizetypegrademax. thicknessfor screw sizemin. thicknessmaterial grade/classthickness tolerance Pkg. Qty. Price
1 1/8"
Standard
Non Graded
0.177"
1 1/8"
0.136"
Ungraded
0.136" to 0.179"
 10
$16.37
GRAINGER

fits bolt sizetypegrademax. thicknessfor screw sizemin. thicknessmaterial grade/classthickness tolerance Pkg. Qty. Price
1 1/4"
Standard
Non Graded
0.177"
1 1/4"
0.136"
Ungraded
0.136" to 0.18"
 10
$18.78
GRAINGER

fits bolt sizetypegrademax. thicknessfor screw sizemin. thicknessmaterial grade/classthickness tolerance Pkg. Qty. Price
7/8"
Standard
Non Graded
0.177"
7/8"
0.136"
Ungraded
0.136" to 0.177"
 25
$24.22

Description

Structural washers are used with structural screws, bolts, studs & nuts for ensuring the structural integrity of an engineered joint. Raptor Supplies offers structural washers from brands like Fabory and Grainger. These washers are used in construction and exterior building applications.

Features

  • Structural washers have a hole in the centre for easy installation of the fastener.
  • They have a specialised design to prevent rotation and subsequent loosening.
  • Structural washers can bear structural loads as they can distribute force over a large surface area.
  • They are available in flat, square bevelled & notched variants in both Imperial & Metric dimensions.
  • Fabory structural washers feature carbon steel construction with plain or hot dipped galvanised finish for strength & corrosion resistance.
  • Grainger structural washers come in packs containing multiple pieces for easy replacement.

Frequently Asked Questions

Q. What do the strength grades / classes denote?

A.

  • The grade or class of a washer denotes its strength & compatibility with the respective nut / threaded rod / screw / bolt.
  • The higher the grade, the higher the strength of the fastener.
  • SAE grades are used for Imperial washers. Washers having the same SAE strength grade as other fasteners should be used together.
  • ISO classes are used for Metric washers. Washers having the same first digit as a fastener are meant to be used together.
  • ASTM grades are based on factors like strength, pressure & temperature.

Q. How to install a tension / load indicator structural washer?

A. A tension / load indicator structural washer can be installed on a bolt assembly while taking care that the washer does not come in contact with the rotating surface of the attached nut or bolt head. Coming in contact with a rotating part would cause premature compression & wear on the ridges of the washer and render it useless.

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