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PartsTable / COMPONENT / 81145
81145 ✓ Verified by PartsTable
Esselte · 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 COUPLER,TRANSMISSION LINE is a Esselte industrial component. Key specifications include material: ALUMINUM ALLOY 6061, nut_style: HEXAGON, unit_type: TRANSMISSION LINE, drive_type: GEAR, duty_cycle: CONTINUOUS, nut_height: 0.125 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-264-3503, 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
81145
NSN: 5310-00-264-3503
FSC: 5310
CAGE: 96152 — BORG-WARNER CORP MARVEL-SCHEBLER/TILLOTSON DIV (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061
nut_styleHEXAGON
unit_typeTRANSMISSION LINE
drive_typeGEAR
duty_cycleCONTINUOUS
nut_height0.125 INCHES NOMINAL IN
body_length2.733 INCHES NOMINAL IN
temp_rating-53.9 FAHRENHEIT AND 71.1 FAHRENHEIT DEGF
current_typeDC
thread_class2B
overall_width0.750 INCHES NOMINAL IN
terminal_typeRECEPTACLE
NSN5310-00-264-3503
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 81145 · Esselte ⚠ 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 QUANTITY PER INCH: 32
•
THREAD CLASS: 2B
•
WIDTH ACROSS FLATS: 0.344 INCHES NOMINAL IN
•
BEARING SURFACE TYPE: FLAT
•
NOMINAL THREAD SIZE: 0.164 INCHES IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL: STEEL OVERALL
•
SURFACE TREATMENT: CADMIUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH32
THREAD CLASS2B
WIDTH ACROSS FLATS0.344 INCHES NOMINAL IN
BEARING SURFACE TYPEFLAT
NOMINAL THREAD SIZE0.164 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM OVERALL
NUT STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
FFB171Interchangeable
interchangeable cross-reference
interchangeable
8009Interchangeable
interchangeable cross-reference
interchangeable
C8009X1Interchangeable
interchangeable cross-reference
interchangeable
ASME B94.19Interchangeable
interchangeable cross-reference
interchangeable
1561-0625Interchangeable
interchangeable cross-reference
interchangeable
53410Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 81145?
81145 is a COUPLER,TRANSMISSION LINE manufactured by Esselte.
What parts can replace 81145?
There are 15 known substitutes for 81145: FFB171, 8009, C8009X1 and 12 more. Substitute compatibility should be verified for your specific system.
Is 81145 still available?
81145 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: July 2026