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PartsTable / COMPONENT / 52E126
52E126 ✓ 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: STEEL NUT, nut_height: 0.875 INCHES NOMINAL IN, temp_rating: 250.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNF, locking_feature: PREVAILING TORQUE WITH NONMETALLIC INSERT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-497-3894, 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
52E126
NSN: 5310-00-497-3894
FSC: 5310
CAGE: 72962 — HARVARD INDUSTRIES INC (USA)
SPECIFICATIONS
materialSTEEL NUT
nut_height0.875 INCHES NOMINAL IN
temp_rating250.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNF
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OR ZINC NUT
width_across_flats1.063 INCHES NOMINAL IN
nominal_thread_size0.750 INCHES IN
thread_quantity_per_inch16
NSN5310-00-497-3894
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 52E126 · 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: 16
•
THREAD SERIES: UNF
•
NOMINAL THREAD SIZE: 0.750 INCHES IN
•
SURFACE TREATMENT: CADMIUM OR ZINC NUT
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH ACROSS FLATS: 1.063 INCHES NOMINAL IN
•
NUT HEIGHT: 0.875 INCHES NOMINAL IN
•
LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH16
THREAD SERIESUNF
NOMINAL THREAD SIZE0.750 INCHES IN
SURFACE TREATMENTCADMIUM OR ZINC NUT
THREAD DIRECTIONRIGHT-HAND
WIDTH ACROSS FLATS1.063 INCHES NOMINAL IN
NUT HEIGHT0.875 INCHES NOMINAL IN
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
TEMP RATING250.0 FAHRENHEIT NOMINAL DEGF
MATERIALSTEEL NUT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
MILN25027Interchangeable
interchangeable cross-reference
interchangeable
MS20365-1216AInterchangeable
interchangeable cross-reference
interchangeable
734678PC10Interchangeable
interchangeable cross-reference
interchangeable
VE804Interchangeable
interchangeable cross-reference
interchangeable
D-1639Interchangeable
interchangeable cross-reference
interchangeable
58111AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 52E126?
52E126 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 52E126?
There are 11 known substitutes for 52E126: MILN25027, MS20365-1216A, 734678PC10 and 8 more. Substitute compatibility should be verified for your specific system.
Is 52E126 still available?
52E126 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