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Made in USA - 1/4" Screw, PTFE Standard Flat Washer - 0.281" ID x 1/2" OD, 0.031" Thick, Plain Finish


Item #: 05404520
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 1/4
Inside Diameter (Decimal Inch) 0.2810
Outside Diameter (Decimal Inch) 0.5000
Thickness (Decimal Inch) 0.0310
Material PTFE
Finish/Coating Plain
Fastener Standard ASTM D3308
Maximum Inside Diameter (Decimal Inch) 0.2860
Minimum Outside Diameter (Decimal Inch) 0.4900
Minimum Thickness (Decimal Inch) 0.0270
Inside Diameter Tolerance (Decimal Inch) -0.005 to 0.005
Outside Diameter Tolerance (Decimal Inch) -0.010 to 0.010

$5.25

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Made in USA - 1/4", 0.062" Thick Split Lock Washer - 400 Stainless Steel, Passivated Finish, 0.252" Min ID, 0.26" Max ID, 0.487" Max OD


Item #: 57224503
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.
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
System of Measurement Inch
Type Split Lock Washer
Screw Size 1/4
Material Stainless Steel
Material Grade 400
Finish/Coating Passivated
Thickness (Decimal Inch) 0.0620
Minimum Inside Diameter (Decimal Inch) 0.2520
Maximum Inside Diameter (Decimal Inch) 0.2600
Maximum Outside Diameter (Decimal Inch) 0.4870
Military Specification Meets Military Specifications
Maximum Thickness (Decimal Inch) 0.0720
Fastener Standard MS35338

$35.63

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Made in USA - 1/4", 0.078" Thick Split Lock Washer - Alloy Steel, Uncoated, 0.255" Min ID, 0.263" Max ID, 0.365" Max OD


Item #: 88548631
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 1/4
Material Alloy Steel
Finish/Coating Uncoated
Thickness (Decimal Inch) 0.0780
Minimum Inside Diameter (Decimal Inch) 0.2550
Maximum Inside Diameter (Decimal Inch) 0.2630
Maximum Outside Diameter (Decimal Inch) 0.3650
Military Specification Does Not Meet Military Specifications

$5.49

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Made in USA - 1/4", 0.454" OD, Uncoated, Stainless Steel Wedge Lock Washer - Grade 316L, 0.276 to 0.284" ID


Item #: 70927231
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) 1/4
System of Measurement Inch
Outside Diameter (Decimal Inch) 0.4540
Material Stainless Steel
Material Grade 316L
Finish/Coating Uncoated
Minimum Inside Diameter (Decimal Inch) 0.2760
Maximum Inside Diameter (Decimal Inch) 0.2840
Minimum Outside Diameter (Decimal Inch) 0.4460
Maximum Outside Diameter (Decimal Inch) 0.4540
Fastener Standard ISO 9001; ISO 14001

$32.98

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Made in USA - 1/4", 0.454" OD, Uncoated, Stainless Steel Wedge Lock Washer - Grade 316L, 0.276 to 0.284" ID


Item #: 70966536
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) 1/4
System of Measurement Inch
Outside Diameter (Decimal Inch) 0.4540
Material Stainless Steel
Material Grade 316L
Finish/Coating Uncoated
Minimum Inside Diameter (Decimal Inch) 0.2760
Maximum Inside Diameter (Decimal Inch) 0.2840
Minimum Outside Diameter (Decimal Inch) 0.4460
Maximum Outside Diameter (Decimal Inch) 0.4540
Fastener Standard ISO 9001; ISO 14001

$71.60

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Made in USA - 1/4-5/16" Screw, 0.29" ID x 0.531" OD, Grade 17-7 PH-A Stainless Steel Triple Wave Washer - 0.01" Thick, 0.07" Overall Height, 0.011" Deflection


Item #: 01587534
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 1/4-5/16
System of Measurement Inch
Inside Diameter (Decimal Inch) 0.290
Outside Diameter (Decimal Inch) 0.531
Material Stainless Steel
Material Grade 17-7 PH-A
Overall Height (Decimal Inch) 0.070
Thickness (Decimal Inch) 0.010
Deflection (Decimal Inch) 0.0110
Load at Flat (Lb.) 23.72

$17.41

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Made in USA - 1/8" Long x 5/16" Wide Notch, 0.001" Thick Internal Notched Washer - 301-304 Stainless Steel, 1" ID, 1-1/2" OD


Item #: 07188642
Brand: Made in USA
Exact Tooling IR#: 04

Product Specifications
Inside Diameter (Decimal Inch) 1.0000
Inside Diameter (Inch) 1
Outside Diameter (Inch) 1-1/2
Outside Diameter (Decimal Inch) 1.5000
Notch Width (Decimal Inch) 0.3120
Notch Length (Decimal Inch) 0.1250
Notch Type Internal
Number of Notches 1
Material Stainless Steel
Material Grade 301-304
Thickness (Decimal Inch) 0.0010
Finish/Coating Uncoated
Inside Diameter Tolerance (Decimal Inch) 0.000 to 0.110
Outside Diameter Tolerance (Decimal Inch) -0.002 to 0.002
Thickness Tolerance (Decimal Inch) -0.0001 to 0.0001
Notch Width Tolerance (Decimal Inch) -0.005 to 0.005
Notch Length Tolerance (Decimal Inch) -0.005 to 0.005

$25.39

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Made in USA - 1/8" Long x 5/16" Wide Notch, 0.002" Thick Internal Notched Washer - 301-304 Stainless Steel, 1-1/4" ID, 1-3/4" OD


Item #: 07188691
Brand: Made in USA
Exact Tooling IR#: 04

Product Specifications
Inside Diameter (Decimal Inch) 1.2500
Inside Diameter (Inch) 1-1/4
Outside Diameter (Decimal Inch) 1.7500
Notch Width (Decimal Inch) 0.3120
Notch Length (Decimal Inch) 0.1250
Notch Type Internal
Number of Notches 1
Material Stainless Steel
Material Grade 301-304
Thickness (Decimal Inch) 0.0020
Finish/Coating Uncoated
Inside Diameter Tolerance (Decimal Inch) 0.000 to 0.110
Outside Diameter Tolerance (Decimal Inch) -0.002 to 0.002
Thickness Tolerance (Decimal Inch) -0.0002 to 0.0002
Notch Width Tolerance (Decimal Inch) -0.005 to 0.005
Notch Length Tolerance (Decimal Inch) -0.005 to 0.005

$29.80

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Made in USA - 1/8" Long x 5/16" Wide Notch, 0.003" Thick Internal Notched Washer - 301-304 Stainless Steel, 1-1/4" ID, 1-3/4" OD


Item #: 07188725
Brand: Made in USA
Exact Tooling IR#: 04

Product Specifications
Inside Diameter (Decimal Inch) 1.2500
Inside Diameter (Inch) 1-1/4
Outside Diameter (Decimal Inch) 1.7500
Notch Width (Decimal Inch) 0.3120
Notch Length (Decimal Inch) 0.1250
Notch Type Internal
Number of Notches 1
Material Stainless Steel
Material Grade 301-304
Thickness (Decimal Inch) 0.0030
Finish/Coating Uncoated
Inside Diameter Tolerance (Decimal Inch) 0.000 to 0.110
Outside Diameter Tolerance (Decimal Inch) -0.002 to 0.002
Thickness Tolerance (Decimal Inch) -0.0003 to 0.0003
Notch Width Tolerance (Decimal Inch) -0.005 to 0.005
Notch Length Tolerance (Decimal Inch) -0.005 to 0.005

$30.32

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Made in USA - 1/8" Long x 5/16" Wide Notch, 0.004" Thick Internal Notched Washer - 301-304 Stainless Steel, 1-1/4" ID, 1-3/4" OD


Item #: 07188741
Brand: Made in USA
Exact Tooling IR#: 04

Product Specifications
Inside Diameter (Decimal Inch) 1.2500
Inside Diameter (Inch) 1-1/4
Outside Diameter (Decimal Inch) 1.7500
Notch Width (Decimal Inch) 0.3120
Notch Length (Decimal Inch) 0.1250
Notch Type Internal
Number of Notches 1
Material Stainless Steel
Material Grade 301-304
Thickness (Decimal Inch) 0.0040
Finish/Coating Uncoated
Inside Diameter Tolerance (Decimal Inch) 0.000 to 0.110
Outside Diameter Tolerance (Decimal Inch) -0.002 to 0.002
Thickness Tolerance (Decimal Inch) -0.0004 to 0.0004
Notch Width Tolerance (Decimal Inch) -0.005 to 0.005
Notch Length Tolerance (Decimal Inch) -0.005 to 0.005

$30.84

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Made in USA - 1/8" Long x 5/16" Wide Notch, 0.005" Thick Internal Notched Washer - 301-304 Stainless Steel, 1-1/4" ID, 1-3/4" OD


Item #: 07188766
Brand: Made in USA
Exact Tooling IR#: 04

Product Specifications
Inside Diameter (Decimal Inch) 1.2500
Inside Diameter (Inch) 1-1/4
Outside Diameter (Decimal Inch) 1.7500
Notch Width (Decimal Inch) 0.3120
Notch Length (Decimal Inch) 0.1250
Notch Type Internal
Number of Notches 1
Material Stainless Steel
Material Grade 301-304
Thickness (Decimal Inch) 0.0050
Finish/Coating Uncoated
Inside Diameter Tolerance (Decimal Inch) 0.000 to 0.110
Outside Diameter Tolerance (Decimal Inch) -0.002 to 0.002
Thickness Tolerance (Decimal Inch) -0.0005 to 0.0005
Notch Width Tolerance (Decimal Inch) -0.005 to 0.005
Notch Length Tolerance (Decimal Inch) -0.005 to 0.005

$178.33

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Made in USA - 1/8" Long x 5/16" Wide Notch, 0.006" Thick Internal Notched Washer - 301-304 Stainless Steel, 1-1/4" ID, 1-3/4" OD


Item #: 07188774
Brand: Made in USA
Exact Tooling IR#: 04

Product Specifications
Inside Diameter (Decimal Inch) 1.2500
Inside Diameter (Inch) 1-1/4
Outside Diameter (Decimal Inch) 1.7500
Notch Width (Decimal Inch) 0.3120
Notch Length (Decimal Inch) 0.1250
Notch Type Internal
Number of Notches 1
Material Stainless Steel
Material Grade 301-304
Thickness (Decimal Inch) 0.0060
Finish/Coating Uncoated
Inside Diameter Tolerance (Decimal Inch) 0.000 to 0.110
Outside Diameter Tolerance (Decimal Inch) -0.002 to 0.002
Thickness Tolerance (Decimal Inch) -0.0006 to 0.0006
Notch Width Tolerance (Decimal Inch) -0.005 to 0.005
Notch Length Tolerance (Decimal Inch) -0.005 to 0.005

$31.34

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Made in USA - 1/8" Long x 5/16" Wide Notch, 0.007" Thick Internal Notched Washer - 301-304 Stainless Steel, 1-1/4" ID, 1-3/4" OD


Item #: 07188782
Brand: Made in USA
Exact Tooling IR#: 04

Product Specifications
Inside Diameter (Decimal Inch) 1.2500
Inside Diameter (Inch) 1-1/4
Outside Diameter (Inch) 1-3/4
Outside Diameter (Decimal Inch) 1.7500
Notch Width (Decimal Inch) 0.3120
Notch Length (Decimal Inch) 0.1250
Notch Type Internal
Number of Notches 1
Material Stainless Steel
Material Grade 301-304
Thickness (Decimal Inch) 0.0070
Finish/Coating Uncoated
Inside Diameter Tolerance (Decimal Inch) 0.000 to 0.110
Outside Diameter Tolerance (Decimal Inch) -0.002 to 0.002
Thickness Tolerance (Decimal Inch) -0.0007 to 0.0007
Notch Width Tolerance (Decimal Inch) -0.005 to 0.005
Notch Length Tolerance (Decimal Inch) -0.005 to 0.005

$31.61

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Made in USA - 1/8" Long x 5/16" Wide Notch, 0.008" Thick Internal Notched Washer - 301-304 Stainless Steel, 1" ID, 1-3/4" OD


Item #: 07188659
Brand: Made in USA
Exact Tooling IR#: 04

Product Specifications
Inside Diameter (Decimal Inch) 1.0000
Inside Diameter (Inch) 1
Outside Diameter (Inch) 1-3/4
Outside Diameter (Decimal Inch) 1.7500
Notch Width (Decimal Inch) 0.3120
Notch Length (Decimal Inch) 0.1250
Notch Type Internal
Number of Notches 1
Material Stainless Steel
Material Grade 301-304
Thickness (Decimal Inch) 0.0080
Finish/Coating Uncoated
Inside Diameter Tolerance (Decimal Inch) 0.000 to 0.110
Outside Diameter Tolerance (Decimal Inch) -0.002 to 0.002
Thickness Tolerance (Decimal Inch) -0.0008 to 0.0008
Notch Width Tolerance (Decimal Inch) -0.005 to 0.005
Notch Length Tolerance (Decimal Inch) -0.005 to 0.005

$25.65

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Made in USA - 1/8" Long x 5/16" Wide Notch, 0.008" Thick Internal Notched Washer - 301-304 Stainless Steel, 1-1/4" ID, 1-3/4" OD


Item #: 07188790
Brand: Made in USA
Exact Tooling IR#: 04

Product Specifications
Inside Diameter (Decimal Inch) 1.2500
Inside Diameter (Inch) 1-1/4
Outside Diameter (Inch) 1-3/4
Outside Diameter (Decimal Inch) 1.7500
Notch Width (Decimal Inch) 0.3120
Notch Length (Decimal Inch) 0.1250
Notch Type Internal
Number of Notches 1
Material Stainless Steel
Material Grade 301-304
Thickness (Decimal Inch) 0.0080
Finish/Coating Uncoated
Inside Diameter Tolerance (Decimal Inch) 0.000 to 0.110
Outside Diameter Tolerance (Decimal Inch) -0.002 to 0.002
Thickness Tolerance (Decimal Inch) -0.0008 to 0.0008
Notch Width Tolerance (Decimal Inch) -0.005 to 0.005
Notch Length Tolerance (Decimal Inch) -0.005 to 0.005

$31.87

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Made in USA - 1/8" Long x 5/16" Wide Notch, 0.01" Thick Internal Notched Washer - 301-304 Stainless Steel, 1-1/4" ID, 1-3/4" OD


Item #: 07188667
Brand: Made in USA
Exact Tooling IR#: 04

Product Specifications
Inside Diameter (Decimal Inch) 1.2500
Inside Diameter (Inch) 1-1/4
Outside Diameter (Decimal Inch) 1.7500
Notch Width (Decimal Inch) 0.3120
Notch Length (Decimal Inch) 0.1250
Notch Type Internal
Number of Notches 1
Material Stainless Steel
Material Grade 301-304
Thickness (Decimal Inch) 0.0100
Finish/Coating Uncoated
Inside Diameter Tolerance (Decimal Inch) 0.000 to 0.110
Outside Diameter Tolerance (Decimal Inch) -0.002 to 0.002
Thickness Tolerance (Decimal Inch) -0.0010 to 0.0010
Notch Width Tolerance (Decimal Inch) -0.005 to 0.005
Notch Length Tolerance (Decimal Inch) -0.005 to 0.005

$164.99

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Made in USA - 1/8" Long x 5/16" Wide Notch, 0.012" Thick Internal Notched Washer - 301-304 Stainless Steel, 1-1/4" ID, 1-3/4" OD


Item #: 07188675
Brand: Made in USA
Exact Tooling IR#: 04

Product Specifications
Inside Diameter (Decimal Inch) 1.2500
Inside Diameter (Inch) 1-1/4
Outside Diameter (Inch) 1-3/4
Outside Diameter (Decimal Inch) 1.7500
Notch Width (Decimal Inch) 0.3120
Notch Length (Decimal Inch) 0.1250
Notch Type Internal
Number of Notches 1
Material Stainless Steel
Material Grade 301-304
Thickness (Decimal Inch) 0.0120
Finish/Coating Uncoated
Inside Diameter Tolerance (Decimal Inch) 0.000 to 0.110
Outside Diameter Tolerance (Decimal Inch) -0.002 to 0.002
Thickness Tolerance (Decimal Inch) -0.0020 to 0.0020
Notch Width Tolerance (Decimal Inch) -0.005 to 0.005
Notch Length Tolerance (Decimal Inch) -0.005 to 0.005

$28.78

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Made in USA - 1/8" Long x 5/16" Wide Notch, 0.015" Thick Internal Notched Washer - 301-304 Stainless Steel, 1-1/4" ID, 1-3/4" OD


Item #: 07188683
Brand: Made in USA
Exact Tooling IR#: 04

Product Specifications
Inside Diameter (Decimal Inch) 1.2500
Inside Diameter (Inch) 1-1/4
Outside Diameter (Inch) 1-3/4
Outside Diameter (Decimal Inch) 1.7500
Notch Width (Decimal Inch) 0.3120
Notch Length (Decimal Inch) 0.1250
Notch Type Internal
Number of Notches 1
Material Stainless Steel
Material Grade 301-304
Thickness (Decimal Inch) 0.0150
Finish/Coating Uncoated
Inside Diameter Tolerance (Decimal Inch) 0.000 to 0.110
Outside Diameter Tolerance (Decimal Inch) -0.002 to 0.002
Thickness Tolerance (Decimal Inch) -0.0020 to 0.0020
Notch Width Tolerance (Decimal Inch) -0.005 to 0.005
Notch Length Tolerance (Decimal Inch) -0.005 to 0.005

$29.02

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Made in USA - 1/8" Long x 5/16" Wide Notch, 0.02" Thick Internal Notched Washer - 301-304 Stainless Steel, 1-1/4" ID, 1-3/4" OD


Item #: 07188709
Brand: Made in USA
Exact Tooling IR#: 04

Product Specifications
Inside Diameter (Decimal Inch) 1.2500
Inside Diameter (Inch) 1-1/4
Outside Diameter (Decimal Inch) 1.7500
Notch Width (Decimal Inch) 0.3120
Notch Length (Decimal Inch) 0.1250
Notch Type Internal
Number of Notches 1
Material Stainless Steel
Material Grade 301-304
Thickness (Decimal Inch) 0.0200
Finish/Coating Uncoated
Inside Diameter Tolerance (Decimal Inch) 0.000 to 0.110
Outside Diameter Tolerance (Decimal Inch) -0.002 to 0.002
Thickness Tolerance (Decimal Inch) -0.0025 to 0.0025
Notch Width Tolerance (Decimal Inch) -0.005 to 0.005
Notch Length Tolerance (Decimal Inch) -0.005 to 0.005

$29.29

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Made in USA - 1/8" Long x 5/16" Wide Notch, 0.025" Thick Internal Notched Washer - 301-304 Stainless Steel, 1-1/4" ID, 1-3/4" OD


Item #: 07188717
Brand: Made in USA
Exact Tooling IR#: 04

Product Specifications
Inside Diameter (Decimal Inch) 1.2500
Inside Diameter (Inch) 1-1/4
Outside Diameter (Inch) 1-3/4
Outside Diameter (Decimal Inch) 1.7500
Notch Width (Decimal Inch) 0.3120
Notch Length (Decimal Inch) 0.1250
Notch Type Internal
Number of Notches 1
Material Stainless Steel
Material Grade 301-304
Thickness (Decimal Inch) 0.0250
Finish/Coating Uncoated
Inside Diameter Tolerance (Decimal Inch) 0.000 to 0.110
Outside Diameter Tolerance (Decimal Inch) -0.002 to 0.002
Thickness Tolerance (Decimal Inch) -0.0025 to 0.0025
Notch Width Tolerance (Decimal Inch) -0.005 to 0.005
Notch Length Tolerance (Decimal Inch) -0.005 to 0.005

$29.54

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