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PartsTable / COMPONENT / 33C819-003
33C819-003 ✓ 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,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYHEXAMETHYLENE AMIDE OR PLASTIC POLYCAPROLACTAM OVERALL, nut_style: HEXAGON, nut_height: 0.109 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-063-8987, 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
33C819-003
NSN: 5310-00-063-8987
FSC: 5310
CAGE: 04660 — AIL SYSTEMS INC SUB OF EATON CORP (USA)
SPECIFICATIONS
materialPLASTIC POLYHEXAMETHYLENE AMIDE OR PLASTIC POLYCAPROLACTAM OVERALL
nut_styleHEXAGON
nut_height0.109 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
width_across_flats0.312 INCHES NOMINAL IN
nominal_thread_size0.138 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch32
material_document_and_classificationMIL-M-20693 MIL SPEC ALL MATERIAL RESPONSES OVERALL
NSN5310-00-063-8987
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 33C819-003 · 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 DIRECTION: RIGHT-HAND
•
BEARING SURFACE TYPE: CHAMFERED
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD QUANTITY PER INCH: 32
•
NOMINAL THREAD SIZE: 0.138 INCHES IN
•
NUT HEIGHT: 0.109 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-M-20693 MIL SPEC ALL MATERIAL RESPONSES OVERALL
•
MATERIAL: PLASTIC POLYHEXAMETHYLENE AMIDE OR PLASTIC POLYCAPROLACTAM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
BEARING SURFACE TYPECHAMFERED
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH32
NOMINAL THREAD SIZE0.138 INCHES IN
NUT HEIGHT0.109 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-M-20693 MIL SPEC ALL MATERIAL RESPONSES OVERALL
MATERIALPLASTIC POLYHEXAMETHYLENE AMIDE OR PLASTIC POLYCAPROLACTAM OVERALL
NUT STYLEHEXAGON
WIDTH ACROSS FLATS0.312 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
DP5017Interchangeable
interchangeable cross-reference
interchangeable
1037-32Interchangeable
interchangeable cross-reference
interchangeable
1016-32Interchangeable
interchangeable cross-reference
interchangeable
4550Interchangeable
interchangeable cross-reference
interchangeable
5011352-01Interchangeable
interchangeable cross-reference
interchangeable
610006Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 33C819-003?
33C819-003 is a NUT,PLAIN,HEXAGON.
What parts can replace 33C819-003?
There are 22 known substitutes for 33C819-003: DP5017, 1037-32, 1016-32 and 19 more. Substitute compatibility should be verified for your specific system.
Is 33C819-003 still available?
33C819-003 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