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Technical Data Sheet
PartsTable / MRO / 62-55-4
62-55-4 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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

RESISTOR,VARIABLE,NONWIRE WOUND,. Key specifications include material: STEEL COMP 4130 OR STEEL COMP 4340 OR STEEL COMP 3140 OR STEEL COMP 8740 NUT, nut_style: DOUBLE HEXAGON, body_style: CYLINDRICAL, body_length: 0.250 INCHES MAXIMUM IN, temp_rating: 250.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-297-3715, 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
MRO→ MRO_GENERAL→ 62-55-4
NSN: 5310-00-297-3715
FSC: 5310
CAGE: 2M335 — LEHIGH ELECTRIC PRODUCTS (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OR STEEL COMP 4340 OR STEEL COMP 3140 OR STEEL COMP 8740 NUT
nut_styleDOUBLE HEXAGON
body_styleCYLINDRICAL
body_length0.250 INCHES MAXIMUM IN
temp_rating250.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
actuator_typeFLUSH DRIVE WITH SLOT-HOLE
body_diameter0.250 INCHES NOMINAL IN
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
overall_height0.953 INCHES NOMINAL IN
overall_length0.891 INCHES MAXIMUM IN
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
NSN5310-00-297-3715
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 62-55-4 · 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 QUANTITY PER INCH: 14
•
LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT
•
TEMP RATING: 250.0 FAHRENHEIT NOMINAL DEGF
•
MATERIAL: STEEL COMP 4130 OR STEEL COMP 4340 OR STEEL COMP 3140 OR STEEL COMP 8740 NUT
•
THREAD CLASS: 3B
•
NOMINAL THREAD SIZE: 0.875 INCHES IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH14
OVERALL HEIGHT0.953 INCHES NOMINAL IN
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
TEMP RATING250.0 FAHRENHEIT NOMINAL DEGF
MATERIALSTEEL COMP 4130 OR STEEL COMP 4340 OR STEEL COMP 3140 OR STEEL COMP 8740 NUT
THREAD CLASS3B
NOMINAL THREAD SIZE0.875 INCHES IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT
THREAD DIRECTIONRIGHT-HAND
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
62-55-1Interchangeable
interchangeable cross-reference
interchangeable
82-31-0Interchangeable
interchangeable cross-reference
interchangeable
62PFR500Interchangeable
interchangeable cross-reference
interchangeable
13EB144Interchangeable
Same NIIN cross-reference
interchangeable
53-60085-60Interchangeable
Same NIIN cross-reference
interchangeable
53-60086-73Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 62-55-4?
62-55-4 is a RESISTOR,VARIABLE,NONWIRE WOUND,. It is classified as a MRO (MRO_GENERAL).
What parts can replace 62-55-4?
There are 8 known substitutes for 62-55-4: 62-55-1, 82-31-0, 62PFR500 and 5 more. Substitute compatibility should be verified for your specific system.
Is 62-55-4 still available?
62-55-4 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026