PartsTable
Technical Data Sheet
1801-064 ✓ 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 COMP 1137 OVERALL, nut_style: HEXAGON, nut_height: 0.454 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN, temp_rating: 550.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-208-3087, 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
1801-064
NSN: 5310-00-208-3087
FSC: 5310
CAGE: 72962 — HARVARD INDUSTRIES INC (USA)
SPECIFICATIONS
materialSTEEL COMP 1137 OVERALL
nut_styleHEXAGON
nut_height0.454 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
temp_rating550.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNF
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_across_flats0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN
nominal_thread_size0.375 INCHES IN
bearing_surface_typeCHAMFERED
NSN5310-00-208-3087
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1801-064 · 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 CLASS: 3B
NOMINAL THREAD SIZE: 0.375 INCHES IN
WIDTH ACROSS FLATS: 0.563 INCHES NOMINAL IN
BEARING SURFACE TYPE: CHAMFERED
NUT STYLE: HEXAGON
THREAD QUANTITY PER INCH: 24
SURFACE TREATMENT: CADMIUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5024 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3B
NOMINAL THREAD SIZE0.375 INCHES IN
WIDTH ACROSS FLATS0.563 INCHES NOMINAL IN
BEARING SURFACE TYPECHAMFERED
NUT STYLEHEXAGON
THREAD QUANTITY PER INCH24
SURFACE TREATMENTCADMIUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5024 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIESUNF
NUT HEIGHT0.435 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
21FC624Interchangeable
interchangeable cross-reference
interchangeable
145440Interchangeable
interchangeable cross-reference
interchangeable
52HS019-624Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1801-064?
1801-064 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 1801-064?
There are 3 known substitutes for 1801-064: 21FC624, 145440, 52HS019-624. Substitute compatibility should be verified for your specific system.
What is the NSN for 1801-064?
1801-064 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-208-3087. This indicates validated use in U.S. government and defense supply chains.
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