PartsTable
Technical Data Sheet
Z6374-02 ✓ 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: IRON ALLOY 660 OVERALL, nut_style: HEXAGON, nut_height: 0.345 INCHES MINIMUM AND 0.355 INCHES MAXIMUM IN, thread_class: 3B, thread_series: UNF, locking_feature: PREVAILING TORQUE ALL METAL DESIGN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-468-0627, 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
Z6374-02
NSN: 5310-00-468-0627
FSC: 5310
CAGE: 72962 — HARVARD INDUSTRIES INC (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
nut_styleHEXAGON
nut_height0.345 INCHES MINIMUM AND 0.355 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNF
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
countersink_angle85.0 DEGREES MINIMUM AND 95.0 DEGREES MAXIMUM NUT
width_across_flats0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
nominal_thread_size0.190 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch32
NSN5310-00-468-0627
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: Z6374-02 · 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
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NUT STYLE: HEXAGON
NOMINAL THREAD SIZE: 0.190 INCHES IN
THREAD QUANTITY PER INCH: 32
THREAD SERIES: UNF
COUNTERSINK ANGLE: 85.0 DEGREES MINIMUM AND 95.0 DEGREES MAXIMUM NUT
THREAD CLASS: 3B
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NUT STYLEHEXAGON
NOMINAL THREAD SIZE0.190 INCHES IN
THREAD QUANTITY PER INCH32
THREAD SERIESUNF
COUNTERSINK ANGLE85.0 DEGREES MINIMUM AND 95.0 DEGREES MAXIMUM NUT
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
MATERIALIRON ALLOY 660 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
368370Interchangeable
interchangeable cross-reference
interchangeable
6389Interchangeable
interchangeable cross-reference
interchangeable
B8QH1201AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is Z6374-02?
Z6374-02 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace Z6374-02?
There are 3 known substitutes for Z6374-02: 368370, 6389, B8QH1201A. Substitute compatibility should be verified for your specific system.
What is the NSN for Z6374-02?
Z6374-02 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-468-0627. This indicates validated use in U.S. government and defense supply chains.
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