PartsTable
Technical Data Sheet
390012PC545 ✓ 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

NUT,SELF-LOCKING,CONE SEAT,HEXAG. Key specifications include material: COPPER ALLOY OVERALL, nut_style: CONE SEAT, HEXAGON, nut_height: 0.500 INCHES NOMINAL IN, thread_class: 4B, thread_series: UNF, cone_seat_angle: 90.00 DEGREES NOMINAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-264-1382, 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
390012PC545
NSN: 5310-00-264-1382
FSC: 5310
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleCONE SEAT, HEXAGON
nut_height0.500 INCHES NOMINAL IN
thread_class4B
thread_seriesUNF
cone_seat_angle90.00 DEGREES NOMINAL
locking_featurePREVAILING TORQUE ALL METAL DESIGN
special_featuresCONE 0.125 LG. BY 1.500 INCH OUTSIDE DIAMETER AND CHAMFER ON CONE 30 DEGREES BY 0.062 INCH DEEP IN
thread_directionRIGHT-HAND
width_across_flats1.625 INCHES NOMINAL IN
nominal_thread_size1.250 INCHES IN
thread_quantity_per_inch12
NSN5310-00-264-1382
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 390012PC545 · 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
NUT STYLE: CONE SEAT, HEXAGON
NUT HEIGHT: 0.500 INCHES NOMINAL IN
NOMINAL THREAD SIZE: 1.250 INCHES IN
CONE SEAT ANGLE: 90.00 DEGREES NOMINAL
THREAD SERIES: UNF
THREAD QUANTITY PER INCH: 12
WIDTH ACROSS FLATS: 1.625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLECONE SEAT, HEXAGON
NUT HEIGHT0.500 INCHES NOMINAL IN
NOMINAL THREAD SIZE1.250 INCHES IN
CONE SEAT ANGLE90.00 DEGREES NOMINAL
SPECIAL FEATURESCONE 0.125 LG. BY 1.500 INCH OUTSIDE DIAMETER AND CHAMFER ON CONE 30 DEGREES BY 0.062 INCH DEEP IN
THREAD SERIESUNF
THREAD QUANTITY PER INCH12
WIDTH ACROSS FLATS1.625 INCHES NOMINAL IN
MATERIALCOPPER ALLOY OVERALL
THREAD CLASS4B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
20545Interchangeable
interchangeable cross-reference
interchangeable
40871Interchangeable
interchangeable cross-reference
interchangeable
MP52328Interchangeable
interchangeable cross-reference
interchangeable
677-0273-010Interchangeable
interchangeable cross-reference
interchangeable
2412O59 PART 20545Interchangeable
interchangeable cross-reference
interchangeable
4615SHD2500Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 390012PC545?
390012PC545 is a NUT,SELF-LOCKING,CONE SEAT,HEXAG.
What parts can replace 390012PC545?
There are 10 known substitutes for 390012PC545: 20545, 40871, MP52328 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 390012PC545?
390012PC545 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-264-1382. This indicates validated use in U.S. government and defense supply chains.
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