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PartsTable / COMPONENT / 4384539 PC 93Q3
4384539 PC 93Q3 ✓ 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 NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, nut_style: HEXAGON, nut_height: 0.891 INCHES MAXIMUM IN, temp_rating: 250.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL COARSE (UNC). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-370-1148, 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
4384539 PC 93Q3
NSN: 5310-01-370-1148
FSC: 5310
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
nut_styleHEXAGON
nut_height0.891 INCHES MAXIMUM IN
temp_rating250.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
width_across_flats1.052 INCHES MINIMUM IN
nominal_thread_size0.750 INCHES IN
thread_quantity_per_inch10
criticality_code_justificationZZZX
material_document_and_classificationQQ-N-281,CL B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-370-1148
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4384539 PC 93Q3 · 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
•
CRITICALITY CODE JUSTIFICATION: ZZZX
•
NUT HEIGHT: 0.891 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281,CL B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
DEPARTURE FROM CITED DESIGNATOR: ITEMS THAT SUPPORT A LEVEL I OR SUBSAFE CRITICAL SYSTEM/COMPONENT THAT HAS UNDERGONE QUALITY ASSURANCE DURING THE ACQUISITION PROCESS AND REQUIRES OBJECTIVE QUALITY EVIDENCE (OQE) TRACEABLE TO PERMANENT MARKING ON THE MATERIAL
•
MATERIAL: NICKEL ALLOY OVERALL
•
THREAD QUANTITY PER INCH: 10
•
NOMINAL THREAD SIZE: 0.750 INCHES IN
•
WIDTH ACROSS FLATS: 1.052 INCHES MINIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CRITICALITY CODE JUSTIFICATIONZZZX
NUT HEIGHT0.891 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281,CL B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
DEPARTURE FROM CITED DESIGNATORITEMS THAT SUPPORT A LEVEL I OR SUBSAFE CRITICAL SYSTEM/COMPONENT THAT HAS UNDERGONE QUALITY ASSURANCE DURING THE ACQUISITION PROCESS AND REQUIRES OBJECTIVE QUALITY EVIDENCE (OQE) TRACEABLE TO PERMANENT MARKING ON THE MATERIAL
MATERIALNICKEL ALLOY OVERALL
THREAD QUANTITY PER INCH10
NOMINAL THREAD SIZE0.750 INCHES IN
WIDTH ACROSS FLATS1.052 INCHES MINIMUM IN
NUT STYLEHEXAGON
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
1504-50 PIECE 7Interchangeable
interchangeable cross-reference
interchangeable
MS17828-120Interchangeable
interchangeable cross-reference
interchangeable
751-6402402 ITEM 9Interchangeable
interchangeable cross-reference
interchangeable
167-8204846 ITEM NO 41Interchangeable
interchangeable cross-reference
interchangeable
PL-13911N18 ITEM 179BL1Interchangeable
interchangeable cross-reference
interchangeable
13911N18 ITEM 179BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4384539 PC 93Q3?
4384539 PC 93Q3 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 4384539 PC 93Q3?
There are 22 known substitutes for 4384539 PC 93Q3: 1504-50 PIECE 7, MS17828-120, 751-6402402 ITEM 9 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4384539 PC 93Q3?
4384539 PC 93Q3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-370-1148. 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