PartsTable
Technical Data Sheet
77C719790P7 ✓ 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: PLASTIC POLYAMIDE NYLON LOCKING INSERT, nut_style: HEXAGON, nut_height: 0.110 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNJC, locking_feature: PREVAILING TORQUE WITH NONMETALLIC INSERT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-630-5775, 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
77C719790P7
NSN: 5310-01-630-5775
FSC: 5310
CAGE: 03538 — LOCKHEED MARTIN CORPORATION DIV RMS (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON LOCKING INSERT
nut_styleHEXAGON
nut_height0.110 INCHES NOMINAL IN
thread_class3B
thread_seriesUNJC
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
special_featuresNUT MATERIAL IS BRASS,COMMERCIAL HALF HARD OR EQUIVALENT. LOCKING MATERIAL IS RED NYLON (350 DEGREES MAX PERFORMANCE).
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_across_flats0.181 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
nominal_thread_size0.1120 INCHES IN
bearing_surface_typeFLAT
NSN5310-01-630-5775
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 77C719790P7 · 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
WIDTH ACROSS FLATS: 0.181 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT
THREAD QUANTITY PER INCH: 40
NUT STYLE: HEXAGON
THREAD SERIES: UNJC
BEARING SURFACE TYPE: FLAT
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESNUT MATERIAL IS BRASS,COMMERCIAL HALF HARD OR EQUIVALENT. LOCKING MATERIAL IS RED NYLON (350 DEGREES MAX PERFORMANCE).
WIDTH ACROSS FLATS0.181 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
THREAD QUANTITY PER INCH40
NUT STYLEHEXAGON
THREAD SERIESUNJC
BEARING SURFACE TYPEFLAT
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS3B
NOMINAL THREAD SIZE0.1120 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
92-1660-440Interchangeable
interchangeable cross-reference
interchangeable
BACN10DN40Interchangeable
interchangeable cross-reference
interchangeable
400826-2Interchangeable
interchangeable cross-reference
interchangeable
146-4BCPInterchangeable
interchangeable cross-reference
interchangeable
146-0112-001Interchangeable
interchangeable cross-reference
interchangeable
540336-508CInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 77C719790P7?
77C719790P7 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 77C719790P7?
There are 7 known substitutes for 77C719790P7: 92-1660-440, BACN10DN40, 400826-2 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 77C719790P7?
77C719790P7 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-630-5775. This indicates validated use in U.S. government and defense supply chains.
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