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PartsTable / COMPONENT / 90-07651
90-07651 ✓ 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: 0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN, outside_diameter: 0.494 INCHES MINIMUM AND 0.506 INCHES MAXIMUM IN, style_designator: FLAT EXTERNAL TEETH, surface_treatment: CADMIUM OVERALL, material_thickness: 0.025 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-527-5781, 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
90-07651
NSN: 5310-00-527-5781
FSC: 5310
CAGE: 15476 — COMPAQ FEDERAL LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
outside_diameter0.494 INCHES MINIMUM AND 0.506 INCHES MAXIMUM IN
style_designatorFLAT EXTERNAL TEETH
surface_treatmentCADMIUM OVERALL
material_thickness0.025 INCHES NOMINAL IN
NSN5310-00-527-5781
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 90-07651 · 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
•
SURFACE TREATMENT: CADMIUM OVERALL
•
STYLE DESIGNATOR: FLAT EXTERNAL TEETH
•
HOLE DIAMETER: 0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
MATERIAL THICKNESS: 0.025 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.494 INCHES MINIMUM AND 0.506 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTCADMIUM OVERALL
STYLE DESIGNATORFLAT EXTERNAL TEETH
HOLE DIAMETER0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
MATERIAL THICKNESS0.025 INCHES NOMINAL IN
OUTSIDE DIAMETER0.494 INCHES MINIMUM AND 0.506 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
MS35335-32Interchangeable
interchangeable cross-reference
interchangeable
656193Interchangeable
interchangeable cross-reference
interchangeable
138479Interchangeable
interchangeable cross-reference
interchangeable
A300-3010Interchangeable
interchangeable cross-reference
interchangeable
A18-258Interchangeable
interchangeable cross-reference
interchangeable
A300-4-1386Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 90-07651?
90-07651 is a WASHER,LOCK.
What parts can replace 90-07651?
There are 9 known substitutes for 90-07651: MS35335-32, 656193, 138479 and 6 more. Substitute compatibility should be verified for your specific system.
Is 90-07651 still available?
90-07651 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026