PartsTable
Technical Data Sheet
503331 ✓ 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 SOLENOID ASSEMBLY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_height: 0.750 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNF, locking_feature: PREVAILING TORQUE WITH NONMETALLIC INSERT, thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-050-3331, 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
503331
NSN: 5310-00-050-3331
FSC: 5310
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_height0.750 INCHES NOMINAL IN
thread_class3B
thread_seriesUNF
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OR ZINC OVERALL
width_across_flats0.938 INCHES NOMINAL IN
nominal_thread_size0.625 INCHES IN
end_item_identificationF-22 RAPTOR
thread_quantity_per_inch18
material_document_and_classificationQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-050-3331
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 503331 · 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
THREAD CLASS: 3B
NOMINAL THREAD SIZE: 0.625 INCHES IN
THREAD SERIES: UNF
THREAD QUANTITY PER INCH: 18
NUT HEIGHT: 0.750 INCHES NOMINAL IN
WIDTH ACROSS FLATS: 0.938 INCHES NOMINAL IN
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS3B
NOMINAL THREAD SIZE0.625 INCHES IN
THREAD SERIESUNF
THREAD QUANTITY PER INCH18
NUT HEIGHT0.750 INCHES NOMINAL IN
WIDTH ACROSS FLATS0.938 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
614511Interchangeable
interchangeable cross-reference
interchangeable
275127Interchangeable
interchangeable cross-reference
interchangeable
50331Interchangeable
interchangeable cross-reference
interchangeable
50331AInterchangeable
interchangeable cross-reference
interchangeable
11508Interchangeable
interchangeable cross-reference
interchangeable
SM-B-650644-6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 503331?
503331 is a SOLENOID ASSEMBLY.
What parts can replace 503331?
There are 22 known substitutes for 503331: 614511, 275127, 50331 and 19 more. Substitute compatibility should be verified for your specific system.
Is 503331 still available?
503331 is currently cancelled.
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