PartsTable
Technical Data Sheet
503209 ✓ 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: STEEL COMP 1212 NUT, nut_height: 0.234 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 5310-00-050-3209, 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
503209
NSN: 5310-00-050-3209
FSC: 5310
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
materialSTEEL COMP 1212 NUT
nut_height0.234 INCHES NOMINAL IN
thread_class3B
thread_seriesUNF
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OR ZINC NUT
width_across_flats0.375 INCHES NOMINAL IN
nominal_thread_size0.190 INCHES IN
thread_quantity_per_inch32
material_document_and_classificationQQ-S-+633,CANC FED SPEC SINGLE MATERIAL RESPONSE NUT
NSN5310-00-050-3209
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 503209 · 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: STEEL COMP 1212 NUT
LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT
THREAD QUANTITY PER INCH: 32
NOMINAL THREAD SIZE: 0.190 INCHES IN
THREAD SERIES: UNF
THREAD DIRECTION: RIGHT-HAND
THREAD CLASS: 3B
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 1212 NUT
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
THREAD QUANTITY PER INCH32
NOMINAL THREAD SIZE0.190 INCHES IN
THREAD SERIESUNF
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS3B
MATERIALFIBER LOCKING INSERT
SURFACE TREATMENTCADMIUM OR ZINC NUT
NUT HEIGHT0.234 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
11748Interchangeable
interchangeable cross-reference
interchangeable
GGG-F-325Interchangeable
interchangeable cross-reference
interchangeable
GP840EE1Interchangeable
interchangeable cross-reference
interchangeable
U3DS-5AInterchangeable
interchangeable cross-reference
interchangeable
U3DSX1-5AInterchangeable
interchangeable cross-reference
interchangeable
503567Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 503209?
503209 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 503209?
There are 20 known substitutes for 503209: 11748, GGG-F-325, GP840EE1 and 17 more. Substitute compatibility should be verified for your specific system.
Is 503209 still available?
503209 is currently cancelled.
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