Split Lock Washers

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172 results
Grade 8 Split Lock Washers - Yellow Zinc Plated
Grade 8 Split Lock Washers - Yellow Zinc Plated
These high-strength, heat-treated alloy steel washers come with a yellow zinc finish for added corrosion resistance. Intended for Grade 8 assemblies, they ensure robust clamp load in critical applications. Made in the USA for dependable, consistent performance.
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1/4"
0.109"
0.062"
Alloy Steel
Zinc Yellow Plated
100
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1/4"
0.109"
0.062"
Alloy Steel
Zinc Yellow Plated
200
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1/4"
0.109"
0.062"
Alloy Steel
Zinc Yellow Plated
500
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5/16"
0.125"
0.078"
Alloy Steel
Zinc Yellow Plated
100
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5/16"
0.125"
0.078"
Alloy Steel
Zinc Yellow Plated
200
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5/16"
0.125"
0.078"
Alloy Steel
Zinc Yellow Plated
500
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3/8"
0.141"
0.094"
Alloy Steel
Zinc Yellow Plated
100
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3/8"
0.141"
0.094"
Alloy Steel
Zinc Yellow Plated
200
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7/16"
0.156"
0.109"
Alloy Steel
Zinc Yellow Plated
100
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7/16"
0.156"
0.109"
Alloy Steel
Zinc Yellow Plated
200
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1/2"
0.171"
0.125"
Alloy Steel
Zinc Yellow Plated
100
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1/2"
0.171"
0.125"
Alloy Steel
Zinc Yellow Plated
200
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Grade 8 Split Lock Washers - Plain Finish
Grade 8 Split Lock Washers - Plain Finish
Designed for high-strength Grade 8 assemblies, these plain-finish alloy steel lock washers resist high clamping loads and minimize loosening under extreme vibration. Pair them with Grade 8 bolts for consistent torque retention and top-tier performance.
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1/4"
0.109"
0.062"
Alloy Steel
Plain
100
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5/16"
0.125"
0.078"
Alloy Steel
Plain
100
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3/8"
0.141"
0.094"
Alloy Steel
Plain
100
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7/16"
0.156"
0.109"
Alloy Steel
Plain
100
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1/2"
0.171"
0.125"
Alloy Steel
Plain
100
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9/16"
0.188"
0.141"
Alloy Steel
Plain
50
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5/8"
0.203"
0.156"
Alloy Steel
Plain
25
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3/4"
0.234"
0.188"
Alloy Steel
Plain
25
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7/8"
0.266"
0.219"
Alloy Steel
Plain
25
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1"
0.297"
0.25"
Alloy Steel
Plain
25
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Grade 8 Split Lock Washers - Armor Coat™
Grade 8 Split Lock Washers - Armor Coat™
Heat-treated alloy steel washers paired with Grade 8 bolts for heavy-duty clamping. Finished in Armor Coat™, they deliver extreme corrosion resistance (1,000+ hours salt spray), outperforming standard plating. Perfect where maximum strength and rust protection are needed.
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1/4"
0.109"
0.062"
Alloy Steel
Armor Coat
100
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5/16"
0.125"
0.078"
Alloy Steel
Armor Coat
100
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3/8"
0.141"
0.094"
Alloy Steel
Armor Coat
100
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7/16"
0.156"
0.109"
Alloy Steel
Armor Coat
100
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1/2"
0.171"
0.125"
Alloy Steel
Armor Coat
100
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5/8"
0.203"
0.156"
Alloy Steel
Armor Coat
25
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3/4"
0.234"
0.188"
Alloy Steel
Armor Coat
25
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Grade 5 Split Lock Washers - Zinc Plated
Grade 5 Split Lock Washers - Zinc Plated
Carbon steel lock washers for Grade 5 applications, finished with zinc plating to provide basic corrosion protection. They help maintain tension under moderate vibration. Pair with Grade 5 bolts for a dependable hold and reduced assembly loosening.
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1/4"
0.109"
0.062"
Carbon Steel
Zinc Plated
100
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1/4"
0.109"
0.062"
Carbon Steel
Zinc Plated
200
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1/4"
0.109"
0.062"
Carbon Steel
Zinc Plated
500
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5/16"
0.125"
0.078"
Carbon Steel
Zinc Plated
100
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5/16"
0.125"
0.078"
Carbon Steel
Zinc Plated
200
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5/16"
0.125"
0.078"
Carbon Steel
Zinc Plated
500
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3/8"
0.141"
0.094"
Carbon Steel
Zinc Plated
100
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3/8"
0.141"
0.094"
Carbon Steel
Zinc Plated
200
Log in to view price
7/16"
0.156"
0.109"
Carbon Steel
Zinc Plated
100
Log in to view price
7/16"
0.156"
0.109"
Carbon Steel
Zinc Plated
200
Log in to view price
1/2"
0.171"
0.125"
Carbon Steel
Zinc Plated
100
Log in to view price
1/2"
0.171"
0.125"
Carbon Steel
Zinc Plated
200
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Grade 5 Split Lock Washers - Plain Finish
Grade 5 Split Lock Washers - Plain Finish
Plain-finish carbon steel washers intended for Grade 5 bolts. They help maintain clamp load in moderate vibration conditions, reducing the chance of loosening. Pair them with Grade 5 screws in automotive, machinery, and general maintenance assemblies.
Bolt Size Width Thickness Material Finish Package Qty Item #
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1/4"
.109"
0.062"
Carbon Steel
Plain
100
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5/16"
.125"
0.078"
Carbon Steel
Plain
100
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3/8"
.141"
0.094"
Carbon Steel
Plain
100
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7/16"
.156"
0.109"
Carbon Steel
Plain
100
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1/2"
0.171"
0.125"
Carbon Steel
Plain
100
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9/16"
.188"
0.141"
Carbon Steel
Plain
50
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5/8"
0.203"
0.156"
Carbon Steel
Plain
50
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3/4"
0.234"
0.188"
Carbon Steel
Plain
50
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7/8"
0.266"
0.219"
Carbon Steel
Plain
50
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1"
0.297"
0.25"
Carbon Steel
Plain
50
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Metric Alloy Steel Lock Washers
Metric Alloy Steel Lock Washers
Built from RC 38–46 / 4037 alloy steel, these metric lock washers resist distortion under high clamp loads. Zinc plating adds corrosion protection, while the robust alloy construction suits demanding MRO tasks. Made in the USA for reliable quality.
Bolt Size Inside Diameter Outside Diameter Thickness Finish Material Package Qty Item #
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M6
6.1 mm
11.8 mm
1.6 mm
Zinc Plated
Alloy Steel
50
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M8
8.1 mm
14.8 mm
2 mm
Zinc Plated
Alloy Steel
50
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M10
10.2 mm
18.1 mm
2.2 mm
Zinc Plated
Alloy Steel
50
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M12
12.2 mm
21.1 mm
2.5 mm
Zinc Plated
Alloy Steel
50
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M14
14.2 mm
24.1 mm
3 mm
Zinc Plated
Alloy Steel
25
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M16
16.2 mm
27.4 mm
3.5 mm
Zinc Plated
Alloy Steel
25
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M18
18.2 mm
29.4 mm
3.5 mm
Zinc Plated
Alloy Steel
25
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M20
20.2 mm
33.6 mm
4 mm
Zinc Plated
Alloy Steel
25
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M22
22.5 mm
35.9 mm
4 mm
Zinc Plated
Alloy Steel
10
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M24
24.5 mm
40 mm
5 mm
Zinc Plated
Alloy Steel
10
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Metric Zinc Plated Lock Washers
Metric Zinc Plated Lock Washers
Zinc-plated spring steel lock washers that meet metric standards, offering enhanced corrosion resistance and reliable tension under vibration. Excellent choice for general assembly tasks, ensuring fasteners remain tight in mild to moderate conditions.
Bolt Size Inside Diameter Outside Diameter Thickness Material Finish Package Qty Item #
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M4
4.1 mm
7.6 mm
0.9 mm
Spring Steel
Zinc Plated
50
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M5
5.1 mm
9.2 mm
1.2 mm
Spring Steel
Zinc Plated
50
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M6
6.1 mm
11.8 mm
1.6 mm
Spring Steel
Zinc Plated
50
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M7
7.1 mm
12.8 mm
1.6 mm
Spring Steel
Zinc Plated
50
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M8
8.1 mm
14.8 mm
2 mm
Spring Steel
Zinc Plated
50
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M10
10.2 mm
18.1 mm
2.2 mm
Spring Steel
Zinc Plated
50
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M12
12.2 mm
21.1 mm
2.5 mm
Spring Steel
Zinc Plated
50
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M14
14.2 mm
24.1 mm
3 mm
Spring Steel
Zinc Plated
25
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M16
16.2 mm
27.4 mm
3.5 mm
Spring Steel
Zinc Plated
25
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M18
18.2 mm
29.4 mm
3.5 mm
Spring Steel
Zinc Plated
25
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M20
20.2 mm
33.6 mm
4 mm
Spring Steel
Zinc Plated
25
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M22
22.5 mm
35.9 mm
4 mm
Spring Steel
Zinc Plated
10
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Metric Plain Finish Lock Washers
Metric Plain Finish Lock Washers
Class 8 plain-finish spring steel washers designed for metric applications. They provide reliable tension to help prevent loosening under vibration, making them ideal for securing bolts and nuts in various MRO tasks where consistent clamp load is critical.
Bolt Size Inside Diameter Outside Diameter Thickness Material Finish Package Qty Item #
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M4
4.1 mm
7.6 mm
0.9 mm
Spring Steel
Plain
50
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M5
5.1 mm
9.2 mm
1.2 mm
Spring Steel
Plain
50
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M6
6.1 mm
11.8 mm
1.6 mm
Spring Steel
Plain
50
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M8
8.1 mm
14.8 mm
2 mm
Spring Steel
Plain
50
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M10
10.2 mm
18.1 mm
2.2 mm
Spring Steel
Plain
50
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18-8 Stainless Steel Medium Split Lock Washers
18-8 Stainless Steel Medium Split Lock Washers
Made from corrosion-resistant 18-8 stainless steel, these medium split lock washers secure threaded fasteners under vibration. Ideal for use with 18-8 stainless steel cap screws, they deliver consistent performance in moisture-prone or outdoor environments.
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1/4"
0.109"
0.062"
18-8 Stainless Steel
100
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5/16"
0.125"
0.078"
18-8 Stainless Steel
100
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3/8"
0.141"
0.094"
18-8 Stainless Steel
50
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7/16"
0.156"
0.109"
18-8 Stainless Steel
50
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1/2"
0.171"
0.125"
18-8 Stainless Steel
50
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9/16"
0.188"
0.141"
18-8 Stainless Steel
25
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5/8"
0.203"
0.156"
18-8 Stainless Steel
25
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3/4"
0.234"
0.188"
18-8 Stainless Steel
25
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7/8"
0.266"
0.219"
18-8 Stainless Steel
10
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1"
0.297"
0.25"
18-8 Stainless Steel
10
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#2
0.035"
0.02"
18-8 Stainless Steel
100
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#4
0.04"
0.03"
18-8 Stainless Steel
100
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18-8 Stainless Steel Lock Washers
18-8 Stainless Steel Lock Washers
These 18-8 stainless steel washers prevent loosening in moist or corrosive settings. Perfect for pairing with stainless fasteners to maintain consistent clamp load under vibration. A reliable option for industries that demand both durability and rust resistance.
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M2
2.1 mm
4.4 mm
0.5 mm
18-8 Stainless Steel
100
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M3
3.1 mm
6.2 mm
0.8 mm
18-8 Stainless Steel
100
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M4
4.1 mm
7.6 mm
0.9 mm
18-8 Stainless Steel
100
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M5
5.1 mm
9.2 mm
1.2 mm
18-8 Stainless Steel
100
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M6
6.1 mm
11.8 mm
1.6 mm
18-8 Stainless Steel
50
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M8
8.1 mm
14.8 mm
2 mm
18-8 Stainless Steel
50
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M10
10.2 mm
18.1 mm
2.2 mm
18-8 Stainless Steel
25
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M12
12.2 mm
21.1 mm
2.5 mm
18-8 Stainless Steel
25
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M14
14.2 mm
24.1 mm
3 mm
18-8 Stainless Steel
10
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M16
16.2 mm
27.4 mm
3.5 mm
18-8 Stainless Steel
10
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M20
20.5 mm
33.6 mm
4 mm
18-8 Stainless Steel
10
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M24
24.5 mm
40 mm
5 mm
18-8 Stainless Steel
10
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316 Stainless Steel Split Lock Washers
316 Stainless Steel Split Lock Washers
Fabricated from premium 316 stainless steel, these lock washers deliver exceptional corrosion resistance, even in harsh marine or chemical settings. They’re laser-stamped “316” for easy identification and ensure secure clamping in challenging environments.
Bolt Size Width Thickness Material Package Qty Item #
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1/4"
0.109"
0.062"
316 Stainless Steel
100
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5/16"
0.125"
0.078"
316 Stainless Steel
100
Log in to view price
3/8"
0.141"
0.094"
316 Stainless Steel
50
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7/16"
0.156"
0.109"
316 Stainless Steel
50
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1/2"
0.171"
0.125"
316 Stainless Steel
50
Log in to view price
5/8"
0.203"
0.156"
316 Stainless Steel
25
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3/4"
0.234"
0.188"
316 Stainless Steel
15
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7/8"
0.266"
0.219"
316 Stainless Steel
15
Log in to view price
#6
0.047"
0.031"
316 Stainless Steel
100
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#8
0.055"
0.04"
316 Stainless Steel
100
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#10
0.062"
0.047"
316 Stainless Steel
100
Log in to view price
Metric 316 Stainless Steel Lock Washers
Metric 316 Stainless Steel Lock Washers
Corrosion-resistant 316 stainless steel lock washers for metric fastener applications. Withstand harsh maritime or chemical environments while maintaining secure tension. An excellent choice for reliability and durability where standard stainless steels may fail.
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M6
6.1 mm
11.8 mm
1.6 mm
316 Stainless Steel
50
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M8
8.1 mm
14.8 mm
2 mm
316 Stainless Steel
50
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M10
10.2 mm
18.1 mm
2.2 mm
316 Stainless Steel
25
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M12
12.2 mm
21.1 mm
2.5 mm
316 Stainless Steel
25
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Silicon Bronze Split Lock Washers
Silicon Bronze Split Lock Washers
Non-magnetic, corrosion-resistant washers made from 651 silicon bronze. Ideal for maritime, electrical, and chemical environments, they provide superior conductivity and withstand corrosive elements like sea water or sewage. Perfect for marine and utility applications.
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1/4"
0.109"
0.062"
Silicon Bronze
100
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5/16"
0.125"
0.078"
Silicon Bronze
50
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3/8"
0.141"
0.094"
Silicon Bronze
50
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1/2"
0.171"
0.125"
Silicon Bronze
25
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#4
0.038"
0.025"
Silicon Bronze
100
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#6
0.047"
0.031"
Silicon Bronze
100
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#8
0.055"
0.04"
Silicon Bronze
100
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#10
0.062"
0.047"
Silicon Bronze
100
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Split Lock Washers #8
Split Lock Washers #8
Plain-finish carbon steel design sized for #8 fasteners. Ideal for moderate vibration environments, they’re suitable for Grade 5 bolt assemblies and general-purpose usage in various maintenance and repair operations.
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#8
0.055"
0.04"
Carbon Steel
Plain
50
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Pkg Qty: 15
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130 of 172 Results

Kimball Midwest offers a premium selection of split lock washers, designed to provide superior vibration resistance and secure fastening in demanding applications. Our alloy steel split lock washers, made from heat-treated prime alloy steel, are engineered for use with Grade 8 bolts, delivering a minimum tensile strength of 150,000 PSI. For added durability, they are available with an optional ARMOR COAT™, which provides 10 times more corrosion resistance than traditional zinc plated washers, surpassing 1,000-hour salt spray tests.

We also offer zinc alloy steel split lock washers, featuring a zinc yellow finish with hexavalent chromate plating for enhanced corrosion protection, making them ideal for high-strength applications. Additionally, our stainless steel split lock washers, made from 18-8 stainless steel, offer excellent corrosion resistance for harsh environments.

Kimball Midwest provides high-quality solutions to meet your fastening requirements. Trust our lock washer options for superior performance and long-lasting reliability.

Contact a local sales representative today to get the split lock washers you need.

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