Email: sales@exacttooling.com
We ship from multiple warehouses throughout the USA
to get you what you need as fast as possible!
Millions of items in stock!
Fast online checkout - No account required
Cart 0
Cart 0

Products - (25001 Products)

Made in USA - 5/16" Screw, Grade 6/6 Nylon Standard Flat Washer - 8.05mm ID x 1/2" OD, 2.36mm Thick - Exact Tooling

Made in USA - 5/16" Screw, Grade 6/6 Nylon Standard Flat Washer - 8.05mm ID x 1/2" OD, 2.36mm Thick


Item #: 05163431
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

Flat washers are standard washers used for general-purpose fastening. They are placed under the head of a bolt or above a nut to distribute clamping force and prevent fasteners from pulling through materials.
Nylon is a lightweight, nonconductive material that is resistant to impact, wear and abrasion. It is ideal for electrical applications or where corrosion is a concern.
Product Specifications
Type Standard
System of Measurement Inch
Screw Size 5/16
Inside Diameter (Decimal Inch) 0.3170
Inside Diameter (mm) 8.05
Outside Diameter (Inch) 1/2
Outside Diameter (Decimal Inch) 0.5000
Outside Diameter (mm) 12.70
Thickness (Decimal Inch) 0.0930
Thickness (mm) 2.36
Material Grade 6/6
Material Nylon
Maximum Outside Diameter (Decimal Inch) 0.5000
Inside Diameter Tolerance (Decimal Inch) -0.005 to 0.005
Outside Diameter Tolerance (Decimal Inch) -0.015 to 0.015

$ 12.06
Made in USA - 5/16" Screw, Grade 6/6 Nylon Standard Flat Washer - 8.05mm ID x 1/2" OD, 3.18mm Thick - Exact Tooling

Made in USA - 5/16" Screw, Grade 6/6 Nylon Standard Flat Washer - 8.05mm ID x 1/2" OD, 3.18mm Thick


Item #: 05163449
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

Flat washers are standard washers used for general-purpose fastening. They are placed under the head of a bolt or above a nut to distribute clamping force and prevent fasteners from pulling through materials.
Nylon is a lightweight, nonconductive material that is resistant to impact, wear and abrasion. It is ideal for electrical applications or where corrosion is a concern.
Product Specifications
Type Standard
System of Measurement Inch
Screw Size 5/16
Inside Diameter (Decimal Inch) 0.3170
Inside Diameter (mm) 8.05
Outside Diameter (Inch) 1/2
Outside Diameter (Decimal Inch) 0.5000
Outside Diameter (mm) 12.70
Thickness (Decimal Inch) 0.1250
Thickness (mm) 3.18
Material Grade 6/6
Material Nylon
Maximum Outside Diameter (Decimal Inch) 0.5000
Inside Diameter Tolerance (Decimal Inch) -0.005 to 0.005
Outside Diameter Tolerance (Decimal Inch) -0.015 to 0.015

$ 18.70
Made in USA - 5/16" Screw, Grade 6/6 Nylon Standard Flat Washer - 8.64mm ID x 18.8mm OD, 1.57mm Thick - Exact Tooling

Made in USA - 5/16" Screw, Grade 6/6 Nylon Standard Flat Washer - 8.64mm ID x 18.8mm OD, 1.57mm Thick


Item #: 67353680
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

Flat washers are standard washers used for general-purpose fastening. They are placed under the head of a bolt or above a nut to distribute clamping force and prevent fasteners from pulling through materials.
Nylon is a lightweight, nonconductive material that is resistant to impact, wear and abrasion. It is ideal for electrical applications or where corrosion is a concern.
Product Specifications
Type Standard
System of Measurement Inch
Screw Size 5/16
Inside Diameter (Decimal Inch) 0.3400
Inside Diameter (mm) 8.64
Outside Diameter (Decimal Inch) 0.7400
Outside Diameter (mm) 18.80
Thickness (Decimal Inch) 0.0620
Thickness (mm) 1.57
Material Grade 6/6
Material Nylon
Inside Diameter Tolerance (Decimal Inch) -0.005 to 0.005
Outside Diameter Tolerance (Decimal Inch) -0.008 to 0.008

$ 28.70
Made in USA - 5/16" Screw, Grade 60 Neoprene Standard Flat Washer - 0.29" ID x 0.688" OD, 0.108" Thick, Plain Finish - Exact Tooling

Made in USA - 5/16" Screw, Grade 60 Neoprene Standard Flat Washer - 0.29" ID x 0.688" OD, 0.108" Thick, Plain Finish


Item #: 06043756
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

Flat washers are standard washers used for general-purpose fastening. They are placed under the head of a bolt or above a nut to distribute clamping force and prevent fasteners from pulling through materials.
Neoprene is a corrosion-resistant, insulating material that is strong, durable and ideal for sealing applications where moisture and leaks are concerns.
Product Specifications
Type Standard
System of Measurement Inch
Screw Size 5/16
Inside Diameter (Decimal Inch) 0.2900
Outside Diameter (Decimal Inch) 0.6880
Thickness (Decimal Inch) 0.1080
Material Grade Grade 60
Material Neoprene
Finish/Coating Plain
Fastener Standard MIL-R-6855 Class 2 Type A
Maximum Inside Diameter (Decimal Inch) 0.2950
Minimum Outside Diameter (Decimal Inch) 0.6780
Minimum Thickness (Decimal Inch) 0.0780
Inside Diameter Tolerance (Decimal Inch) -0.010 to 0.010
Outside Diameter Tolerance (Decimal Inch) -0.010 to 0.010

$ 27.71
Made in USA - 5/16" Screw, Grade 60 Neoprene Standard Flat Washer - 0.29" ID x 9/16" OD, 0.108" Thick, Plain Finish - Exact Tooling

Made in USA - 5/16" Screw, Grade 60 Neoprene Standard Flat Washer - 0.29" ID x 9/16" OD, 0.108" Thick, Plain Finish


Item #: 06043749
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

Flat washers are standard washers used for general-purpose fastening. They are placed under the head of a bolt or above a nut to distribute clamping force and prevent fasteners from pulling through materials.
Neoprene is a corrosion-resistant, insulating material that is strong, durable and ideal for sealing applications where moisture and leaks are concerns.
Product Specifications
Type Standard
System of Measurement Inch
Screw Size 5/16
Inside Diameter (Decimal Inch) 0.2900
Outside Diameter (Inch) 9/16
Outside Diameter (Decimal Inch) 0.5625
Thickness (Decimal Inch) 0.1080
Material Grade Grade 60
Material Neoprene
Finish/Coating Plain
Fastener Standard MIL-R-6855 Class 2 Type A
Maximum Inside Diameter (Decimal Inch) 0.2950
Minimum Outside Diameter (Decimal Inch) 0.5530
Minimum Thickness (Decimal Inch) 0.0780
Inside Diameter Tolerance (Decimal Inch) -0.010 to 0.010
Outside Diameter Tolerance (Decimal Inch) -0.010 to 0.010

$ 27.45
Made in USA - 5/16" Screw, Grade 8 Alloy Steel SAE Flat Washer - 11/32" ID x 11/16" OD, 0.072" Thick, Zinc Yellow Dichromate Finish - Exact Tooling

Made in USA - 5/16" Screw, Grade 8 Alloy Steel SAE Flat Washer - 11/32" ID x 11/16" OD, 0.072" Thick, Zinc Yellow Dichromate Finish


Item #: 02994895
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

SAE (Society of Automotive Engineers) flat washers are thinner, have smaller outside diameters and fit tighter around bolts than USS (United States Standard) washers.
Alloy steel is the strongest of all steel types. It has high tensile strength and offers excellent resistance to wear, fatigue and galling.
Product Specifications
Type SAE
System of Measurement Inch
Screw Size 5/16
Inside Diameter (Inch) 11/32
Outside Diameter (Inch) 11/16
Thickness (Decimal Inch) 0.0720
Material Grade Grade 8
Material Alloy Steel
Finish/Coating Zinc Yellow Dichromate
Minimum Inside Diameter (Decimal Inch) 0.3390
Maximum Inside Diameter (Decimal Inch) 0.3590
Minimum Outside Diameter (Decimal Inch) 0.6810
Maximum Outside Diameter (Decimal Inch) 0.7030
Minimum Thickness (Decimal Inch) 0.0550
Maximum Thickness (Inch) 1/16

$ 27.63
Made in USA - 5/16" Screw, Grade 8 Alloy Steel SAE Flat Washer - 11/32" ID x 11/16" OD, 1/16" Thick - Exact Tooling

Made in USA - 5/16" Screw, Grade 8 Alloy Steel SAE Flat Washer - 11/32" ID x 11/16" OD, 1/16" Thick


Item #: 88548573
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

SAE (Society of Automotive Engineers) flat washers are thinner, have smaller outside diameters and fit tighter around bolts than USS (United States Standard) washers.
Alloy steel is the strongest of all steel types. It has high tensile strength and offers excellent resistance to wear, fatigue and galling.
Product Specifications
Type SAE
System of Measurement Inch
Screw Size 5/16
Inside Diameter (Inch) 11/32
Outside Diameter (Inch) 11/16
Thickness (Inch) 1/16
Material Grade Grade 8
Material Alloy Steel

$ 32.72
Made in USA - 5/16" Screw, Grade 8 Alloy Steel USS Flat Washer - 0.37" ID x 0.905" OD, 0.104" Thick, Zinc Yellow Dichromate Finish - Exact Tooling

Made in USA - 5/16" Screw, Grade 8 Alloy Steel USS Flat Washer - 0.37" ID x 0.905" OD, 0.104" Thick, Zinc Yellow Dichromate Finish


Item #: 02995140
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

USS (United States Standard) flat washers are thicker, have larger outside diameters and do not fit as tightly around bolts as SAE (Society of Automotive Engineers) washers.
Alloy steel is the strongest of all steel types. It has high tensile strength and offers excellent resistance to wear, fatigue and galling.
Product Specifications
Type USS
System of Measurement Inch
Screw Size 5/16
Inside Diameter (Decimal Inch) 0.3700
Outside Diameter (Decimal Inch) 0.9050
Thickness (Decimal Inch) 0.1040
Material Grade Grade 8
Material Alloy Steel
Finish/Coating Zinc Yellow Dichromate
Maximum Inside Diameter (Decimal Inch) 0.3900
Minimum Outside Diameter (Decimal Inch) 0.8680
Minimum Thickness (Decimal Inch) 0.0640

$ 43.11
Made in USA - 5/16" Screw, Grade 9 Steel SAE Flat Washer - Zinc Yellow Dichromate Finish - Exact Tooling

Made in USA - 5/16" Screw, Grade 9 Steel SAE Flat Washer - Zinc Yellow Dichromate Finish


Item #: 67514604
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

SAE (Society of Automotive Engineers) flat washers are thinner, have smaller outside diameters and fit tighter around bolts than USS (United States Standard) washers.
Steel is strong and durable but less corrosion resistant than stainless steel. To improve its resistance to corrosion, it may receive additional finishes and coatings.
Product Specifications
Type SAE
System of Measurement Inch
Screw Size 5/16
Material Grade Grade 9
Material Steel
Finish/Coating Zinc Yellow Dichromate
Minimum Inside Diameter (Decimal Inch) 0.3390
Maximum Inside Diameter (Decimal Inch) 0.3490
Minimum Outside Diameter (Decimal Inch) 0.6810
Maximum Outside Diameter (Decimal Inch) 0.7030
Minimum Thickness (Decimal Inch) 0.0560
Maximum Thickness (Decimal Inch) 0.0710
For Use With L9 Hex Nuts; L9 Stover Locknut

$ 35.50
Made in USA - 5/16" Screw, Grade AN960 Stainless Steel Standard Flat Washer - 0.328" ID x 0.562" OD, 0.032" Thick, Passivated Finish, Meets Military Specifications - Exact Tooling

Made in USA - 5/16" Screw, Grade AN960 Stainless Steel Standard Flat Washer - 0.328" ID x 0.562" OD, 0.032" Thick, Passivated Finish, Meets Military Specifications


Item #: 05401559
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

Flat washers are standard washers used for general-purpose fastening. They are placed under the head of a bolt or above a nut to distribute clamping force and prevent fasteners from pulling through materials.
Stainless steel is a strong, corrosion-resistant alloy with excellent resistance to heat. It is used in high-stress, outdoor and corrosive applications.
Product Specifications
Type Standard
System of Measurement Inch
Screw Size 5/16
Inside Diameter (Decimal Inch) 0.3280
Outside Diameter (Decimal Inch) 0.5620
Thickness (Decimal Inch) 0.0320
Material Grade AN960
Material Stainless Steel
Finish/Coating Passivated
Fastener Standard AN960
Maximum Inside Diameter (Decimal Inch) 0.3300
Minimum Outside Diameter (Decimal Inch) 0.5570
Minimum Thickness (Decimal Inch) 0.0280
Inside Diameter Tolerance (Decimal Inch) -0.010 to 0.010
Outside Diameter Tolerance (Decimal Inch) -0.005 to 0.020

$ 36.81
Made in USA - 5/16" Screw, Grade AN960 Stainless Steel Standard Flat Washer - 0.328" ID x 0.562" OD, 0.063" Thick, Passivated Finish, Meets Military Specifications - Exact Tooling

Made in USA - 5/16" Screw, Grade AN960 Stainless Steel Standard Flat Washer - 0.328" ID x 0.562" OD, 0.063" Thick, Passivated Finish, Meets Military Specifications


Item #: 05401567
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

Flat washers are standard washers used for general-purpose fastening. They are placed under the head of a bolt or above a nut to distribute clamping force and prevent fasteners from pulling through materials.
Stainless steel is a strong, corrosion-resistant alloy with excellent resistance to heat. It is used in high-stress, outdoor and corrosive applications.
Product Specifications
Type Standard
System of Measurement Inch
Screw Size 5/16
Inside Diameter (Decimal Inch) 0.3280
Outside Diameter (Decimal Inch) 0.5620
Thickness (Decimal Inch) 0.0630
Material Grade AN960
Material Stainless Steel
Finish/Coating Passivated
Fastener Standard AN960
Maximum Inside Diameter (Decimal Inch) 0.3300
Minimum Outside Diameter (Decimal Inch) 0.5570
Minimum Thickness (Decimal Inch) 0.0570
Inside Diameter Tolerance (Decimal Inch) -0.010 to 0.010
Outside Diameter Tolerance (Decimal Inch) -0.005 to 0.020

$ 99.45
Made in USA - 5/16" Screw, Grade G10 Fiberglass Standard Flat Washer - 0.312" ID x 0.562" OD, 0.062" Thick, Plain Finish - Exact Tooling

Made in USA - 5/16" Screw, Grade G10 Fiberglass Standard Flat Washer - 0.312" ID x 0.562" OD, 0.062" Thick, Plain Finish


Item #: 07324593
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

Flat washers are standard washers used for general-purpose fastening. They are placed under the head of a bolt or above a nut to distribute clamping force and prevent fasteners from pulling through materials.
Fiberglass is a strong, lightweight material with high corrosion resistance. Fiberglass is commonly used in marine applications and other harsh environments where strength and durability are important.
Product Specifications
Type Standard
System of Measurement Inch
Screw Size 5/16
Inside Diameter (Decimal Inch) 0.3120
Outside Diameter (Decimal Inch) 0.5620
Thickness (Decimal Inch) 0.0620
Material Grade G10
Material Fiberglass
Finish/Coating Plain
Fastener Standard MIL-I-24768/27 GEE-F (G10/FR-4)
Maximum Inside Diameter (Decimal Inch) 0.3170
Minimum Outside Diameter (Decimal Inch) 0.5520
Minimum Thickness (Decimal Inch) 0.0545
Inside Diameter Tolerance (Decimal Inch) -0.005 to 0.005
Outside Diameter Tolerance (Decimal Inch) -0.010 to 0.010

$ 16.39
Made in USA - 5/16" Screw, Grade Gray PVC Standard Flat Washer - 3/8" ID x 7/8" OD, 0.062" Thick, Plain Finish - Exact Tooling

Made in USA - 5/16" Screw, Grade Gray PVC Standard Flat Washer - 3/8" ID x 7/8" OD, 0.062" Thick, Plain Finish


Item #: 07187883
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

Flat washers are standard washers used for general-purpose fastening. They are placed under the head of a bolt or above a nut to distribute clamping force and prevent fasteners from pulling through materials.
PVC is a tough, corrosion-resistant thermoplastic ideal for electrical insulating applications and corrosive environments.
Product Specifications
Type Standard
System of Measurement Inch
Screw Size 5/16
Inside Diameter (Decimal Inch) 0.3750
Outside Diameter (Inch) 7/8
Outside Diameter (Decimal Inch) 0.8750
Thickness (Decimal Inch) 0.0620
Material Grade Gray
Material PVC
Finish/Coating Plain
Fastener Standard L-P-535 Type 1 Class 1
Maximum Inside Diameter (Decimal Inch) 0.3800
Minimum Outside Diameter (Decimal Inch) 0.8650
Minimum Thickness (Decimal Inch) 0.0558
Color Gray
Inside Diameter Tolerance (Decimal Inch) -0.005 to 0.005
Outside Diameter Tolerance (Decimal Inch) -0.010 to 0.010

$ 127.41
Made in USA - 5/16" Screw, Grade LE Phenolic Standard Flat Washer - 0.328" ID x 0.569" OD, 0.063" Thick, Plain Finish - Exact Tooling

Made in USA - 5/16" Screw, Grade LE Phenolic Standard Flat Washer - 0.328" ID x 0.569" OD, 0.063" Thick, Plain Finish


Item #: 06043855
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

Flat washers are standard washers used for general-purpose fastening. They are placed under the head of a bolt or above a nut to distribute clamping force and prevent fasteners from pulling through materials.
Phenolic is lightweight, strong and durable. It is used for its thermal and electrical insulating properties in sealing and securing electronic components.
Product Specifications
Type Standard
System of Measurement Inch
Screw Size 5/16
Inside Diameter (Decimal Inch) 0.3280
Outside Diameter (Decimal Inch) 0.5690
Thickness (Decimal Inch) 0.0630
Material Grade LE
Material Phenolic
Finish/Coating Plain
Fastener Standard MIL-I-24768/13 FBE
Maximum Inside Diameter (Decimal Inch) 0.3330
Minimum Outside Diameter (Decimal Inch) 0.5590
Minimum Thickness (Decimal Inch) 0.0560
Inside Diameter Tolerance (Decimal Inch) -0.005 to 0.005
Outside Diameter Tolerance (Decimal Inch) -0.010 to 0.010

$ 10.68
Made in USA - 5/16" Screw, PTFE Standard Flat Washer - 0.344" ID x 7/8" OD, 0.08" Thick, Plain Finish - Exact Tooling

Made in USA - 5/16" Screw, PTFE Standard Flat Washer - 0.344" ID x 7/8" OD, 0.08" Thick, Plain Finish


Item #: 05404546
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

Flat washers are standard washers used for general-purpose fastening. They are placed under the head of a bolt or above a nut to distribute clamping force and prevent fasteners from pulling through materials.
PTFE (polytetrafluoroethylene) has excellent resistance to corrosion, chemicals and moisture and is ideal for high-heat and corrosive environments.
Product Specifications
Type Standard
System of Measurement Inch
Screw Size 5/16
Inside Diameter (Decimal Inch) 0.3440
Outside Diameter (Decimal Inch) 0.8750
Thickness (Decimal Inch) 0.0800
Material PTFE
Finish/Coating Plain
Fastener Standard ASTM D3308
Maximum Inside Diameter (Decimal Inch) 0.3490
Minimum Outside Diameter (Decimal Inch) 0.8650
Minimum Thickness (Decimal Inch) 0.0740
Inside Diameter Tolerance (Decimal Inch) -0.005 to 0.005
Outside Diameter Tolerance (Decimal Inch) -0.010 to 0.010

$ 9.71
Made in USA - 5/16" Screw, PTFE Standard Flat Washer - 0.37" ID x 1.09" OD, 0.231" Thick, Plain Finish - Exact Tooling

Made in USA - 5/16" Screw, PTFE Standard Flat Washer - 0.37" ID x 1.09" OD, 0.231" Thick, Plain Finish


Item #: 05402144
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

Flat washers are standard washers used for general-purpose fastening. They are placed under the head of a bolt or above a nut to distribute clamping force and prevent fasteners from pulling through materials.
PTFE (polytetrafluoroethylene) has excellent resistance to corrosion, chemicals and moisture and is ideal for high-heat and corrosive environments.
Product Specifications
Type Standard
System of Measurement Inch
Screw Size 5/16
Inside Diameter (Decimal Inch) 0.3700
Outside Diameter (Decimal Inch) 1.0900
Thickness (Decimal Inch) 0.2310
Material PTFE
Finish/Coating Plain
Fastener Standard ASTM D3308
Maximum Inside Diameter (Decimal Inch) 0.3750
Minimum Outside Diameter (Decimal Inch) 1.0800
Minimum Thickness (Decimal Inch) 0.2260
Inside Diameter Tolerance (Decimal Inch) -0.005 to 0.005
Outside Diameter Tolerance (Decimal Inch) -0.010 to 0.010

$ 60.79
Made in USA - 5/16" Screw, PTFE Standard Flat Washer - 0.372" ID x 0.753" OD, 0.19" Thick, Plain Finish - Exact Tooling

Made in USA - 5/16" Screw, PTFE Standard Flat Washer - 0.372" ID x 0.753" OD, 0.19" Thick, Plain Finish


Item #: 05402151
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

Flat washers are standard washers used for general-purpose fastening. They are placed under the head of a bolt or above a nut to distribute clamping force and prevent fasteners from pulling through materials.
PTFE (polytetrafluoroethylene) has excellent resistance to corrosion, chemicals and moisture and is ideal for high-heat and corrosive environments.
Product Specifications
Type Standard
System of Measurement Inch
Screw Size 5/16
Inside Diameter (Decimal Inch) 0.3720
Outside Diameter (Decimal Inch) 0.7530
Thickness (Decimal Inch) 0.1900
Material PTFE
Finish/Coating Plain
Fastener Standard ASTM D3308
Maximum Inside Diameter (Decimal Inch) 0.3770
Minimum Outside Diameter (Decimal Inch) 0.7430
Minimum Thickness (Decimal Inch) 0.1850
Inside Diameter Tolerance (Decimal Inch) -0.005 to 0.005
Outside Diameter Tolerance (Decimal Inch) -0.010 to 0.010

$ 17.12
Made in USA - 5/16" Screw, Steel External Tooth Lock Washer - Zinc-Plated, Grade 2 - Exact Tooling

Made in USA - 5/16" Screw, Steel External Tooth Lock Washer - Zinc-Plated, Grade 2


Item #: 70956123
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

External tooth lock washers have teeth along the outside diameter. They provide greater resistance to loosening than internal tooth lock washers.
Steel is strong and durable but less corrosion resistant than stainless steel. To improve its resistance to corrosion, it may receive additional finishes and coatings.
Product Specifications
Tooth Type External Tooth
Screw Size 5/16
System of Measurement Inch
Material Steel
Thickness (Decimal Inch) 0.029
Material Grade Grade 2
Finish/Coating Zinc-Plated
Minimum Inside Diameter (Decimal Inch) 0.3200
Maximum Inside Diameter (Decimal Inch) 0.3260
Minimum Outside Diameter (Decimal Inch) 0.5880
Maximum Outside Diameter (Decimal Inch) 0.6010
Military Specification Does Not Meet Military Specifications

$ 16.56
Made in USA - 5/16" Screw, Steel Internal Tooth Lock Washer - Zinc-Plated, Grade 2 - Exact Tooling

Made in USA - 5/16" Screw, Steel Internal Tooth Lock Washer - Zinc-Plated, Grade 2


Item #: 70956081
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

Internal tooth lock washers have teeth along the inside diameter. They prevent nut and bolt heads from loosening.
Steel is strong and durable but less corrosion resistant than stainless steel. To improve its resistance to corrosion, it may receive additional finishes and coatings.
Product Specifications
Tooth Type Internal Tooth
Screw Size 5/16
System of Measurement Inch
Material Steel
Thickness (Decimal Inch) 0.029
Material Grade Grade 2
Finish/Coating Zinc-Plated
Minimum Inside Diameter (Decimal Inch) 0.3200
Maximum Inside Diameter (Decimal Inch) 0.3320
Minimum Outside Diameter (Decimal Inch) 0.5940
Maximum Outside Diameter (Decimal Inch) 0.6070
Military Specification Does Not Meet Military Specifications

$ 8.63
Made in USA - 5/16", 0.078" Thick Split Lock Washer - 1060 Spring Steel, Zinc Yellow Dichromate Finish, 0.314" Min ID, 0.322" Max ID, 0.583" Max OD - Exact Tooling

Made in USA - 5/16", 0.078" Thick Split Lock Washer - 1060 Spring Steel, Zinc Yellow Dichromate Finish, 0.314" Min ID, 0.322" Max ID, 0.583" Max OD


Item #: 57224453
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

Split lock washers have a split at one point along their outer diameter, which creates compression and tension to lock the nut in place. Split lock washers are used in high-vibration applications.
Spring steel is a low-alloy, carbon steel with very high yield strength.
Product Specifications
System of Measurement Inch
Type Split Lock Washer
Screw Size 5/16
Material Spring Steel
Material Grade 1060
Finish/Coating Zinc Yellow Dichromate
Thickness (Decimal Inch) 0.0780
Minimum Inside Diameter (Decimal Inch) 0.3140
Maximum Inside Diameter (Decimal Inch) 0.3220
Maximum Outside Diameter (Decimal Inch) 0.5830
Military Specification Meets Military Specifications
Maximum Thickness (Decimal Inch) 0.0880
Fastener Standard MS35338

$ 5.37