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PartsTable / COMPONENT / 5-8INL0CKWASHER
5-8INL0CKWASHER ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.640 INCHES MINIMUM AND 0.659 INCHES MAXIMUM IN, outside_diameter: 1.053 INCHES MINIMUM AND 1.071 INCHES MAXIMUM IN, style_designator: FLAT INTERNAL TEETH, surface_treatment: CADMIUM OVERALL, material_thickness: 0.045 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-197-3313, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
5-8INL0CKWASHER
NSN: 5310-00-197-3313
FSC: 5310
CAGE: 78189 — ITW SHAKEPROOF AUTOMOTIVE PRODUCTS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.640 INCHES MINIMUM AND 0.659 INCHES MAXIMUM IN
outside_diameter1.053 INCHES MINIMUM AND 1.071 INCHES MAXIMUM IN
style_designatorFLAT INTERNAL TEETH
surface_treatmentCADMIUM OVERALL
material_thickness0.045 INCHES NOMINAL IN
NSN5310-00-197-3313
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5-8INL0CKWASHER · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
STYLE DESIGNATOR: FLAT INTERNAL TEETH
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MATERIAL: STEEL OVERALL
•
MATERIAL THICKNESS: 0.045 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.640 INCHES MINIMUM AND 0.659 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 1.053 INCHES MINIMUM AND 1.071 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORFLAT INTERNAL TEETH
SURFACE TREATMENTCADMIUM OVERALL
MATERIALSTEEL OVERALL
MATERIAL THICKNESS0.045 INCHES NOMINAL IN
HOLE DIAMETER0.640 INCHES MINIMUM AND 0.659 INCHES MAXIMUM IN
OUTSIDE DIAMETER1.053 INCHES MINIMUM AND 1.071 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
50673Interchangeable
interchangeable cross-reference
interchangeable
6200-2RSTAInterchangeable
interchangeable cross-reference
interchangeable
E1880Interchangeable
interchangeable cross-reference
interchangeable
1845Interchangeable
interchangeable cross-reference
interchangeable
27213Interchangeable
interchangeable cross-reference
interchangeable
J1403Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5-8INL0CKWASHER?
5-8INL0CKWASHER is a WASHER,LOCK.
What parts can replace 5-8INL0CKWASHER?
There are 18 known substitutes for 5-8INL0CKWASHER: 50673, 6200-2RSTA, E1880 and 15 more. Substitute compatibility should be verified for your specific system.
Is 5-8INL0CKWASHER still available?
5-8INL0CKWASHER is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026