PartsTable
Technical Data Sheet
79NTU101 ✓ 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 302 OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 310 OR STEEL COMP 316 NUT, nut_style: HEXAGON, nut_height: 0.594 INCHES MINIMUM AND 0.624 INCHES MAXIMUM IN, temp_rating: 250.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL COARSE (UNC). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-584-7990, 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
79NTU101
NSN: 5310-00-584-7990
FSC: 5310
CAGE: 72962 — HARVARD INDUSTRIES INC (USA)
SPECIFICATIONS
materialSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 310 OR STEEL COMP 316 NUT
nut_styleHEXAGON
nut_height0.594 INCHES MINIMUM AND 0.624 INCHES MAXIMUM IN
temp_rating250.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
countersink_angle88.0 DEGREES NOMINAL NUT
surface_treatmentPASSIVATE NUT
width_across_flats1.045 INCHES MINIMUM AND 1.067 INCHES MAXIMUM IN
nominal_thread_size0.625 INCHES IN
NSN5310-00-584-7990
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 79NTU101 · 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 DIRECTION: RIGHT-HAND
NUT STYLE: HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES NUT
SURFACE TREATMENT: PASSIVATE NUT
NOMINAL THREAD SIZE: 0.625 INCHES IN
NUT HEIGHT: 0.594 INCHES MINIMUM AND 0.624 INCHES MAXIMUM IN
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
TEMP RATING: 250.0 FAHRENHEIT NOMINAL DEGF
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
NUT STYLEHEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES NUT
SURFACE TREATMENTPASSIVATE NUT
NOMINAL THREAD SIZE0.625 INCHES IN
NUT HEIGHT0.594 INCHES MINIMUM AND 0.624 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
TEMP RATING250.0 FAHRENHEIT NOMINAL DEGF
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
MATERIALPLASTIC POLYHEXAMETHYLENE AMIDE LOCKING INSERT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
803-1624135 PC 45Interchangeable
interchangeable cross-reference
interchangeable
805-1401890 PC 25Interchangeable
interchangeable cross-reference
interchangeable
805-1623054 PC 23Interchangeable
interchangeable cross-reference
interchangeable
MS16228-3Interchangeable
interchangeable cross-reference
interchangeable
79NTU066Interchangeable
interchangeable cross-reference
interchangeable
M24129-4-6CInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 79NTU101?
79NTU101 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 79NTU101?
There are 18 known substitutes for 79NTU101: 803-1624135 PC 45, 805-1401890 PC 25, 805-1623054 PC 23 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 79NTU101?
79NTU101 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-584-7990. This indicates validated use in U.S. government and defense supply chains.
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