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Technical Data Sheet
PartsTable / COMPONENT / 373-0003-000
373-0003-000 ✓ 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 CRYSTAL UNIT,QUARTZ is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, body_width: 0.725 INCHES MAXIMUM IN, hole_diameter: 0.168 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN, overall_width: 0.757 INCHES MAXIMUM IN, body_thickness: 0.317 INCHES MAXIMUM IN, overall_length: 0.775 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-274-8692, 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
373-0003-000
NSN: 5310-00-274-8692
FSC: 5310
CAGE: 13499 — ROCKWELL COLLINS, INC. DBA COLLINS AEROSPACE GOVERNMENT SYSTEMS DIV COLLINS AEROSPACE - GOVERNMENT SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
body_width0.725 INCHES MAXIMUM IN
hole_diameter0.168 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
overall_width0.757 INCHES MAXIMUM IN
body_thickness0.317 INCHES MAXIMUM IN
overall_length0.775 INCHES MAXIMUM IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
terminal_length1.500 INCHES MINIMUM IN
outside_diameter0.325 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
style_designatorOVAL BODY, WIRE LEADS
circuit_resonanceSERIES RESONANCE
overall_thickness0.352 INCHES MAXIMUM IN
NSN5310-00-274-8692
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 373-0003-000 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-854 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
STYLE DESIGNATOR: FLAT INTERNAL TEETH
•
OUTSIDE DIAMETER: 0.336 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.167 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.020 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
NONDEFINITIVE SPEC/STD DATA: A TYPE
•
MATERIAL: STEEL COMP 1 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-854 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATORFLAT INTERNAL TEETH
OUTSIDE DIAMETER0.336 INCHES NOMINAL IN
HOLE DIAMETER0.167 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN
MATERIAL THICKNESS0.020 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
NONDEFINITIVE SPEC/STD DATAA TYPE
MATERIALSTEEL COMP 1 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
5310PL0578660Interchangeable
interchangeable cross-reference
interchangeable
373-0003-000Interchangeable
interchangeable cross-reference
interchangeable
100354-6Interchangeable
interchangeable cross-reference
interchangeable
373-003-0Interchangeable
interchangeable cross-reference
interchangeable
636104-000Interchangeable
Same NIIN cross-reference
interchangeable
633245PC18Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 373-0003-000?
373-0003-000 is a CRYSTAL UNIT,QUARTZ.
What parts can replace 373-0003-000?
There are 12 known substitutes for 373-0003-000: 5310PL0578660, 373-0003-000, 100354-6 and 9 more. Substitute compatibility should be verified for your specific system.
Is 373-0003-000 still available?
373-0003-000 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