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Technical Data Sheet
PartsTable / COMPONENT / 373-0088-000
373-0088-000 ✓ 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 COMP 410 OVERALL, hole_diameter: 0.640 INCHES MINIMUM AND 0.659 INCHES MAXIMUM IN, hardness_rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM, outside_diameter: 0.867 INCHES MINIMUM AND 0.883 INCHES MAXIMUM IN, style_designator: FLAT INTERNAL TEETH, material_thickness: 0.020 INCHES MINIMUM AND 0.024 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-010-4397, 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
373-0088-000
NSN: 5310-01-010-4397
FSC: 5310
CAGE: 13499 — ROCKWELL COLLINS, INC. DBA COLLINS AEROSPACE GOVERNMENT SYSTEMS DIV COLLINS AEROSPACE - GOVERNMENT SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL COMP 410 OVERALL
hole_diameter0.640 INCHES MINIMUM AND 0.659 INCHES MAXIMUM IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
outside_diameter0.867 INCHES MINIMUM AND 0.883 INCHES MAXIMUM IN
style_designatorFLAT INTERNAL TEETH
material_thickness0.020 INCHES MINIMUM AND 0.024 INCHES MAXIMUM IN
material_document_and_classificationAISI ASSN STD 1ST MATERIAL RESPONSE OVERALL
NSN5310-01-010-4397
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 373-0088-000 · 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
•
OUTSIDE DIAMETER: 0.867 INCHES MINIMUM AND 0.883 INCHES MAXIMUM IN
•
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
•
HOLE DIAMETER: 0.640 INCHES MINIMUM AND 0.659 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: FLAT INTERNAL TEETH
•
MATERIAL THICKNESS: 0.020 INCHES MINIMUM AND 0.024 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 410 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI ASSN STD 1ST MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER0.867 INCHES MINIMUM AND 0.883 INCHES MAXIMUM IN
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
HOLE DIAMETER0.640 INCHES MINIMUM AND 0.659 INCHES MAXIMUM IN
STYLE DESIGNATORFLAT INTERNAL TEETH
MATERIAL THICKNESS0.020 INCHES MINIMUM AND 0.024 INCHES MAXIMUM IN
MATERIALSTEEL COMP 410 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD 1ST MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
1728-02-00Interchangeable
interchangeable cross-reference
interchangeable
8836486Interchangeable
interchangeable cross-reference
interchangeable
236-1040P2Interchangeable
interchangeable cross-reference
interchangeable
172802Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 373-0088-000?
373-0088-000 is a WASHER,LOCK.
What parts can replace 373-0088-000?
There are 4 known substitutes for 373-0088-000: 1728-02-00, 8836486, 236-1040P2 and 1 more. Substitute compatibility should be verified for your specific system.
Is 373-0088-000 still available?
373-0088-000 is currently cancelled.
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Last verified: July 2026