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Technical Data Sheet
203189 ✓ 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 INSERT,ELECTRICAL CONNECTOR is a the manufacturer industrial component. Key specifications include angle: 25.0 DEGREES MINIMUM AND 35.0 DEGREES MAXIMUM, radius: 19.840 INCHES NOMINAL IN, material: PLASTIC TETRAFLUOROETHYLENE OVERALL, nut_style: GANG CHANNEL, SELF LOCKING, joint_type: SCARF-BUTT RETAINER, nut_spacing: 0.886 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-048-7514, 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
203189
NSN: 5310-00-048-7514
FSC: 5310
CAGE: 72962 — HARVARD INDUSTRIES INC (USA)
SPECIFICATIONS
angle25.0 DEGREES MINIMUM AND 35.0 DEGREES MAXIMUM
radius19.840 INCHES NOMINAL IN
materialPLASTIC TETRAFLUOROETHYLENE OVERALL
nut_styleGANG CHANNEL, SELF LOCKING
joint_typeSCARF-BUTT RETAINER
nut_spacing0.886 INCHES NOMINAL IN
temp_rating1200.0 FAHRENHEIT NOMINAL DEGF
nut_quantity25
thread_class3B
channel_styleRADIUS TYPE
overall_width0.609 INCHES MAXIMUM IN
thread_seriesUNF
NSN5310-00-048-7514
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 203189 · 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
RADIUS: 19.840 INCHES NOMINAL IN
CHANNEL HEIGHT: 0.141 INCHES NOMINAL IN
NUT SPACING: 0.886 INCHES NOMINAL IN
REMOVABLE NUT MANUFACTURER CODE: 72962
THREAD SERIES: UNF
NOMINAL THREAD SIZE: 0.312 INCHES IN
REMOVABLE NUT MANUFACTURER PART NUMBER: 2037-054
TECHNICAL CHARACTERISTICS (FLIS)
RADIUS19.840 INCHES NOMINAL IN
OVERALL WIDTH0.609 INCHES MAXIMUM IN
CHANNEL HEIGHT0.141 INCHES NOMINAL IN
NUT SPACING0.886 INCHES NOMINAL IN
REMOVABLE NUT MANUFACTURER CODE72962
THREAD SERIESUNF
NOMINAL THREAD SIZE0.312 INCHES IN
REMOVABLE NUT MANUFACTURER PART NUMBER2037-054
ASSEMBLY OVERALL HEIGHT0.485 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
FEATURES PROVIDEDFLOATING NUT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
3127RA-8Interchangeable
interchangeable cross-reference
interchangeable
SAE-AS8791Interchangeable
interchangeable cross-reference
interchangeable
203189Interchangeable
interchangeable cross-reference
interchangeable
MRG38-3326-054Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 203189?
203189 is a INSERT,ELECTRICAL CONNECTOR.
What parts can replace 203189?
There are 4 known substitutes for 203189: 3127RA-8, SAE-AS8791, 203189 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 203189?
203189 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-048-7514. This indicates validated use in U.S. government and defense supply chains.
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