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PartsTable / COMPONENT / 45277
45277 ✓ 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

INSULATION SLEEVING,ELECTRICAL,S. Key specifications include color: BLACK, length: 1.688 INCHES IN, material: STEEL, nut_style: SINGLE BALL SEAT, HEXAGON, nut_height: 1.875 INCHES NOMINAL IN, blade_width: 0.500 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 5310-00-084-4132, 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
45277
NSN: 5310-00-084-4132
FSC: 5310
CAGE: 28631 — HIGHWAY EQUIPMENT COMPANY INC (USA)
SPECIFICATIONS
colorBLACK
length1.688 INCHES IN
materialSTEEL
nut_styleSINGLE BALL SEAT, HEXAGON
nut_height1.875 INCHES NOMINAL IN
blade_width0.500 INCHES NOMINAL IN
design_typeFLEXIBLE
flexibilitySEMIRIGID
temp_rating-55.0 CELSIUS DEGC
current_typeDC
thread_class2B
joined_length3.740 FEET NOMINAL FT
NSN5310-00-084-4132
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 45277 · 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 SERIES: UNF
•
WIDTH ACROSS FLATS: 1.500 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.750 INCHES IN
•
NUT HEIGHT: 1.875 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 16
•
NUT STYLE: SINGLE BALL SEAT, HEXAGON
•
MATERIAL: STEEL OVERALL
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIESUNF
WIDTH ACROSS FLATS1.500 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.750 INCHES IN
NUT HEIGHT1.875 INCHES NOMINAL IN
THREAD QUANTITY PER INCH16
NUT STYLESINGLE BALL SEAT, HEXAGON
MATERIALSTEEL OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
9904Interchangeable
interchangeable cross-reference
interchangeable
8904Interchangeable
interchangeable cross-reference
interchangeable
J8904Interchangeable
interchangeable cross-reference
interchangeable
48-39-0520Interchangeable
interchangeable cross-reference
interchangeable
45277Interchangeable
interchangeable cross-reference
interchangeable
11584Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 45277?
45277 is a INSULATION SLEEVING,ELECTRICAL,S.
What parts can replace 45277?
There are 19 known substitutes for 45277: 9904, 8904, J8904 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 45277?
45277 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-084-4132. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026