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Made in USA - 3/8" Screw, PTFE Standard Flat Washer - 0.406" ID x 1" OD, 0.062" Thick, Plain Finish


Item #: 05404553
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 3/8
Inside Diameter (Decimal Inch) 0.4060
Outside Diameter (Decimal Inch) 1.0000
Thickness (Decimal Inch) 0.0620
Material PTFE
Finish/Coating Plain
Fastener Standard ASTM D3308
Maximum Inside Diameter (Decimal Inch) 0.4110
Minimum Outside Diameter (Decimal Inch) 0.9900
Minimum Thickness (Decimal Inch) 0.0570
Inside Diameter Tolerance (Decimal Inch) -0.005 to 0.005
Outside Diameter Tolerance (Decimal Inch) -0.010 to 0.010

$8.25

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Made in USA - 3/8", 0.094" Thick Split Lock Washer - 1060 Spring Steel, Zinc Yellow Dichromate Finish, 0.377" Min ID, 0.385" Max ID, 0.68" Max OD


Item #: 73409591
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 3/8
Material Spring Steel
Material Grade 1060
Finish/Coating Zinc Yellow Dichromate
Thickness (Decimal Inch) 0.0940
Minimum Inside Diameter (Decimal Inch) 0.3770
Maximum Inside Diameter (Decimal Inch) 0.3850
Maximum Outside Diameter (Decimal Inch) 0.6800
Military Specification Meets Military Specifications
Maximum Thickness (Decimal Inch) 0.1040
Fastener Standard MS35338

$12.84

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Made in USA - 3/8", 0.634" OD, Uncoated, Stainless Steel Wedge Lock Washer - Grade 316L, 0.406 to 0.414" ID


Item #: 70938907
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

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
Screw Size (Inch) 3/8
System of Measurement Inch
Outside Diameter (Decimal Inch) 0.6340
Material Stainless Steel
Material Grade 316L
Finish/Coating Uncoated
Minimum Inside Diameter (Decimal Inch) 0.4060
Maximum Inside Diameter (Decimal Inch) 0.4140
Minimum Outside Diameter (Decimal Inch) 0.6260
Maximum Outside Diameter (Decimal Inch) 0.6340
Fastener Standard ISO 9001; ISO 14001

$25.95

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Made in USA - 3/8", 0.634" OD, Uncoated, Stainless Steel Wedge Lock Washer - Grade 316L, 0.406 to 0.414" ID


Item #: 70966502
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

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
Screw Size (Inch) 3/8
System of Measurement Inch
Outside Diameter (Decimal Inch) 0.6340
Material Stainless Steel
Material Grade 316L
Finish/Coating Uncoated
Minimum Inside Diameter (Decimal Inch) 0.4060
Maximum Inside Diameter (Decimal Inch) 0.4140
Minimum Outside Diameter (Decimal Inch) 0.6260
Maximum Outside Diameter (Decimal Inch) 0.6340
Fastener Standard ISO 9001; ISO 14001

$36.56

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Made in USA - 3/8", 1/8" Thick Split Lock Washer - Alloy Steel, Uncoated, 0.382" Min ID, 0.393" Max ID, 0.553" Max OD


Item #: 88548656
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.
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
System of Measurement Inch
Type Split Lock Washer
Screw Size 3/8
Material Alloy Steel
Finish/Coating Uncoated
Thickness (Decimal Inch) 0.1250
Minimum Inside Diameter (Decimal Inch) 0.3820
Maximum Inside Diameter (Decimal Inch) 0.3930
Maximum Outside Diameter (Decimal Inch) 0.5530
Military Specification Does Not Meet Military Specifications

$13.54

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Made in USA - 3/8-7/16" Screw, 0.39" ID x 0.562" OD, Grade 17-7 PH-A Stainless Steel Triple Wave Washer - 0.02" Thick, 0.11" Overall Height, 0.007" Deflection


Item #: 01587559
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

Triple wave washers have a greater load-bearing capacity than single wave washers but have a smaller diameter.
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 Triple Wave Washer
Screw Size 3/8-7/16
System of Measurement Inch
Inside Diameter (Decimal Inch) 0.390
Outside Diameter (Decimal Inch) 0.562
Material Stainless Steel
Material Grade 17-7 PH-A
Overall Height (Decimal Inch) 0.110
Thickness (Decimal Inch) 0.020
Deflection (Decimal Inch) 0.0070
Load at Flat (Lb.) 46.08

$15.32

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Made in USA - 4.06mm Thick, Black Oxide Finish, Nylon, Standard Countersunk Washer - 5.72mm ID x 15.47mm OD


Item #: 67354209
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

Standard countersunk washers, also known as dimple washers, have a recess that prevents the fastener from splitting or stripping the workpiece material. They are used with countersunk and flathead screws that lie flush against the workpiece.
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 Countersunk Washer
Screw Size (#) #12
System of Measurement Inch
Inside Diameter (Decimal Inch) 0.2250
Inside Diameter (mm) 5.72
Outside Diameter (Decimal Inch) 0.6090
Outside Diameter (mm) 15.47
Material Nylon
Material Grade 6/6
For Use With 82 Flat Head Screws
Finish/Coating Black Oxide
Thickness (Decimal Inch) 0.1600
Thickness (mm) 4.06
Color Black
Maximum Inside Diameter (Decimal Inch) 0.2890

$32.37

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Made in USA - 4.06mm Thick, Nylon, Standard Countersunk Washer - 5.72mm ID x 15.47mm OD


Item #: 67354001
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

Standard countersunk washers, also known as dimple washers, have a recess that prevents the fastener from splitting or stripping the workpiece material. They are used with countersunk and flathead screws that lie flush against the workpiece.
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 Countersunk Washer
Screw Size (#) #12
System of Measurement Inch
Inside Diameter (Decimal Inch) 0.2250
Inside Diameter (mm) 5.72
Outside Diameter (Decimal Inch) 0.6090
Outside Diameter (mm) 15.47
Material Nylon
Material Grade 6/6
For Use With 82 Flat Head Screws
Thickness (Decimal Inch) 0.1600
Thickness (mm) 4.06
Color Natural
Maximum Inside Diameter (Decimal Inch) 0.2890

$32.37

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Made in USA - 4.57mm Thick, Black Oxide Finish, Nylon, Standard Countersunk Washer - 6.6mm ID x 17.35mm OD


Item #: 67354241
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

Standard countersunk washers, also known as dimple washers, have a recess that prevents the fastener from splitting or stripping the workpiece material. They are used with countersunk and flathead screws that lie flush against the workpiece.
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 Countersunk Washer
Screw Size (Inch) 1/4
System of Measurement Inch
Inside Diameter (Decimal Inch) 0.2600
Inside Diameter (mm) 6.60
Outside Diameter (Decimal Inch) 0.6830
Outside Diameter (mm) 17.35
Material Nylon
Material Grade 6/6
For Use With 82 Flat Head Screws
Finish/Coating Black Oxide
Thickness (Decimal Inch) 0.1800
Thickness (mm) 4.57
Color Black
Maximum Inside Diameter (Decimal Inch) 0.3350

$32.37

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Made in USA - 4.57mm Thick, Nylon, Standard Countersunk Washer - 6.6mm ID x 17.35mm OD


Item #: 67354043
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

Standard countersunk washers, also known as dimple washers, have a recess that prevents the fastener from splitting or stripping the workpiece material. They are used with countersunk and flathead screws that lie flush against the workpiece.
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 Countersunk Washer
Screw Size (Inch) 1/4
System of Measurement Inch
Inside Diameter (Decimal Inch) 0.2600
Inside Diameter (mm) 6.60
Outside Diameter (Decimal Inch) 0.6830
Outside Diameter (mm) 17.35
Material Nylon
Material Grade 6/6
For Use With 82 Flat Head Screws
Thickness (Decimal Inch) 0.1800
Thickness (mm) 4.57
Color Natural
Maximum Inside Diameter (Decimal Inch) 0.3350

$33.97

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Made in USA - 5/16" Bolt, 0.317" ID, Grade 17-7 PH Stainless Steel, Belleville Disc Spring - 5/8" OD, 0.042" High, 0.022" Thick


Item #: 60482049
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

Belleville disc springs, also known as conical washers, have a curved shape that creates a spring-like action. They are used in applications that require heavy loads.
Product Specifications
Type Belleville Disc Spring
Bolt Size (Inch) 5/16
System of Measurement Inch
Inside Diameter (Decimal Inch) 0.3170
Material Stainless Steel
Material Grade 17-7 PH
Outside Diameter (Decimal Inch) 0.6250
Thickness (Decimal Inch) 0.0220
Overall Height (Decimal Inch) 0.0420
Deflection (Decimal Inch) 0.0150
Deflection to Flat (Decimal Inch) 0.0200
Load at Flat (Lb.) 111.00
Load at Deflection (Lb.) 94.00
Hardness Rockwell C38

$24.07

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Made in USA - 5/16" Screw Size, 0.343" ID, 1008/1010 Steel Clipped Washer - 0.338 to 0.348" ID, 0.677 to 0.697" OD, 0.055 to 0.065" Thickness, Uncoated


Item #: 06772396
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

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
Screw Size (Inch) 5/16
System of Measurement Inch
Inside Diameter (Decimal Inch) 0.3430
Military Specification Does Not Meet Military Specifications
Material Steel
Minimum Inside Diameter (Decimal Inch) 0.3380
Maximum Inside Diameter (Decimal Inch) 0.3480
Minimum Outside Diameter (Decimal Inch) 0.6770
Maximum Outside Diameter (Decimal Inch) 0.6970
Minimum Thickness (Decimal Inch) 0.0550
Maximum Thickness (Decimal Inch) 0.0650
Finish/Coating Uncoated
Material Grade 1008/1010
Fastener Standard ASTM A109; ASTM A366

$10.52

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Made in USA - 5/16" Screw, 0.292" ID, Nylon Internal Tooth Lock Washer - 47/64" OD, Grade 6/6


Item #: 05163092
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.
Retention lock washers are designed to keep parts and components in place on a shaft.
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
Tooth Type Internal Tooth
Features Retention Washer
Screw Size 5/16
System of Measurement Inch
Material Nylon
Inside Diameter (Decimal Inch) 0.2920
Inside Diameter (mm) 7.42
Outside Diameter (Decimal Inch) 0.7344
Outside Diameter (Inch) 47/64
Outside Diameter (mm) 18.65
Thickness (Decimal Inch) 0.032
Thickness (mm) 0.8128
Material Grade 6/6
Maximum Outside Diameter (Inch) 47/64
Military Specification Does Not Meet Military Specifications

$16.09

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Made in USA - 5/16" Screw, 0.292" ID, Nylon Internal Tooth Lock Washer - 47/64" OD, Grade 6/6


Item #: 67355081
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.
Retention lock washers are designed to keep parts and components in place on a shaft.
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
Tooth Type Internal Tooth
Features Retention Washer
Screw Size 5/16
System of Measurement Inch
Material Nylon
Inside Diameter (Decimal Inch) 0.2920
Inside Diameter (mm) 7.42
Outside Diameter (Decimal Inch) 0.7344
Outside Diameter (Inch) 47/64
Outside Diameter (mm) 18.65
Thickness (Decimal Inch) 0.062
Thickness (mm) 1.5748
Material Grade 6/6
Maximum Outside Diameter (Inch) 47/64
Military Specification Does Not Meet Military Specifications

$16.09

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Made in USA - 5/16" Screw, 0.328" ID x 0.682" OD, Grade 1074-1095 Spring Steel Triple Wave Washer - 0.01" Thick, 0.062" Overall Height, 0.017" Deflection


Item #: 01587658
Brand: Made in USA
Exact Tooling IR#: 04

Features and Benefits

Triple wave washers have a greater load-bearing capacity than single wave washers but have a smaller diameter.
Spring steel is a low-alloy, carbon steel with very high yield strength.
Product Specifications
Type Triple Wave Washer
Screw Size 5/16
System of Measurement Inch
Inside Diameter (Decimal Inch) 0.328
Outside Diameter (Decimal Inch) 0.682
Material Spring Steel
Material Grade 1074-1095
Overall Height (Decimal Inch) 0.062
Thickness (Decimal Inch) 0.010
Deflection (Decimal Inch) 0.0170

$29.69

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Made in USA - 5/16" Screw, 0.332" ID, Stainless Steel Internal Tooth Lock Washer - 0.607" OD, Uncoated, Grade 316


Item #: 57293326
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.
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
Tooth Type Internal Tooth
Screw Size 5/16
System of Measurement Inch
Material Stainless Steel
Inside Diameter (Decimal Inch) 0.3320
Outside Diameter (Decimal Inch) 0.6070
Thickness (mm) 0.0290
Material Grade 316
Finish/Coating Uncoated
Minimum Inside Diameter (Decimal Inch) 0.3200
Minimum Outside Diameter (Decimal Inch) 0.5940
Military Specification Does Not Meet Military Specifications

$176.91

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Made in USA - 5/16" Screw, Grade 1008/1010 Steel Standard Flat Washer - 0.344" ID x 0.688" OD, 0.06" Thick, Cadmium-Plated Finish, Meets Military Specifications


Item #: 07324361
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.
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 Standard
System of Measurement Inch
Screw Size 5/16
Inside Diameter (Decimal Inch) 0.3440
Outside Diameter (Decimal Inch) 0.6880
Thickness (Decimal Inch) 0.0600
Material Grade 1008/1010
Material Steel
Finish/Coating Cadmium-Plated
Fastener Standard MS27183
Maximum Inside Diameter (Decimal Inch) 0.3590
Minimum Outside Diameter (Decimal Inch) 0.6810
Minimum Thickness (Decimal Inch) 0.0510
Inside Diameter Tolerance (Decimal Inch) -0.005 to 0.015
Outside Diameter Tolerance (Decimal Inch) -0.007 to 0.015

$58.76

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Made in USA - 5/16" Screw, Grade 1008/1010 Steel Standard Flat Washer - 3/8" ID x 7/8" OD, 0.075" Thick, Cadmium-Plated Finish, Meets Military Specifications


Item #: 07324379
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.
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 Standard
System of Measurement Inch
Screw Size 5/16
Inside Diameter (Decimal Inch) 0.3750
Outside Diameter (Decimal Inch) 0.8750
Thickness (Decimal Inch) 0.0750
Material Grade 1008/1010
Material Steel
Finish/Coating Cadmium-Plated
Fastener Standard MS27183
Maximum Inside Diameter (Decimal Inch) 0.3900
Minimum Outside Diameter (Decimal Inch) 0.8680
Minimum Thickness (Decimal Inch) 0.0640
Inside Diameter Tolerance (Decimal Inch) -0.005 to 0.015
Outside Diameter Tolerance (Decimal Inch) -0.007 to 0.015

$74.82

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Made in USA - 5/16" Screw, Grade 17-7 PH Stainless Steel USS Flat Washer - 3/8" ID x 7/8" OD, 0.08" Thick, Plain Finish


Item #: 07324429
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.
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 USS
System of Measurement Inch
Screw Size 5/16
Inside Diameter (Inch) 3/8
Inside Diameter (Decimal Inch) 0.3750
Outside Diameter (Inch) 7/8
Outside Diameter (Decimal Inch) 0.8750
Thickness (Decimal Inch) 0.0800
Material Grade 17-7 PH
Material Stainless Steel
Finish/Coating Plain
Fastener Standard ASTM A693
Maximum Inside Diameter (Decimal Inch) 0.3800
Minimum Outside Diameter (Decimal Inch) 0.8650
Minimum Thickness (Decimal Inch) 0.0730
Inside Diameter Tolerance (Decimal Inch) -0.005 to 0.005
Outside Diameter Tolerance (Decimal Inch) -0.010 to 0.010
Hardness Rockwell C40-C48

$57.94

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Made in USA - 5/16" Screw, Grade 300 Stainless Steel Standard Flat Washer - 0.343" ID x 0.687" OD, 0.051" Thick, Passivated Finish, Meets Military Specifications


Item #: 07322902
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) 0.3430
Outside Diameter (Decimal Inch) 0.6870
Thickness (Decimal Inch) 0.0510
Material Grade 300
Material Stainless Steel
Finish/Coating Passivated
Fastener Standard MS15795
Maximum Inside Diameter (Decimal Inch) 0.3510
Minimum Outside Diameter (Decimal Inch) 0.6810
Minimum Thickness (Decimal Inch) 0.0510
Maximum Thickness (Decimal Inch) 0.0800
Inside Diameter Tolerance (Decimal Inch) -0.005 to 0.015
Outside Diameter Tolerance (Decimal Inch) -0.007 to 0.015

$179.25

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