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Technical Data Sheet
PartsTable / COMPONENT / 124-1900973 PART NO. 42
124-1900973 PART NO. 42 ✓ 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 124-1900973 PART NO. 42 is a the manufacturer industrial component. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-475-7192, 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
124-1900973 PART NO. 42
NSN: 5310-01-475-7192
FSC: 5310
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
Part Number124-1900973 PART NO. 42
NSN5310-01-475-7192
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 124-1900973 PART NO. 42 · 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
•
THREAD QUANTITY PER INCH: 11
•
BEARING SURFACE TYPE: CHAMFERED
•
NOMINAL THREAD SIZE: 0.625 INCHES IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL: STEEL OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE J995 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
SURFACE TREATMENT: ZINC OVERALL
•
NUT HEIGHT: 0.535 INCHES MINIMUM AND 0.559 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH11
BEARING SURFACE TYPECHAMFERED
NOMINAL THREAD SIZE0.625 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
MATERIALSTEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONSAE J995 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTZINC OVERALL
NUT HEIGHT0.535 INCHES MINIMUM AND 0.559 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.922 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
1900973Interchangeable
interchangeable cross-reference
interchangeable
02363-7Interchangeable
interchangeable cross-reference
interchangeable
124-1900973 PART NO. 50Interchangeable
interchangeable cross-reference
interchangeable
124-4322635 PC 12Interchangeable
interchangeable cross-reference
interchangeable
4322618Interchangeable
interchangeable cross-reference
interchangeable
124-4322618 ASSY 81Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 124-1900973 PART NO. 42?
124-1900973 PART NO. 42 is a 124-1900973 PART NO. 42.
What parts can replace 124-1900973 PART NO. 42?
There are 18 known substitutes for 124-1900973 PART NO. 42: 1900973, 02363-7, 124-1900973 PART NO. 50 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 124-1900973 PART NO. 42?
124-1900973 PART NO. 42 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-475-7192. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026