PartsTable
Technical Data Sheet
SP79979 ✓ 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,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 360 OVERALL, nut_style: HEXAGON, nut_height: 0.102 INCHES MINIMUM AND 0.144 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-262-5076, 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
SP79979
NSN: 5310-00-262-5076
FSC: 5310
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialCOPPER ALLOY 360 OVERALL
nut_styleHEXAGON
nut_height0.102 INCHES MINIMUM AND 0.144 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
countersink_angle105.0 DEGREES MINIMUM AND 115.0 DEGREES MAXIMUM NUT
precious_materialSILVER
surface_treatmentSILVER OVERALL
width_across_flats0.302 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
nominal_thread_size0.138 INCHES IN
bearing_surface_typeCHAMFERED OR WASHER FACED
NSN5310-00-262-5076
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SP79979 · 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: 2B
WIDTH ACROSS FLATS: 0.302 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
NUT HEIGHT: 0.102 INCHES MINIMUM AND 0.144 INCHES MAXIMUM IN
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH: 32
NOMINAL THREAD SIZE: 0.138 INCHES IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-S-365 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
COUNTERSINK ANGLE: 105.0 DEGREES MINIMUM AND 115.0 DEGREES MAXIMUM NUT
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2B
WIDTH ACROSS FLATS0.302 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
NUT HEIGHT0.102 INCHES MINIMUM AND 0.144 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH32
NOMINAL THREAD SIZE0.138 INCHES IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-S-365 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
COUNTERSINK ANGLE105.0 DEGREES MINIMUM AND 115.0 DEGREES MAXIMUM NUT
MATERIALCOPPER ALLOY 360 OVERALL
PRECIOUS MATERIALSILVER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
P1310-33Interchangeable
interchangeable cross-reference
interchangeable
P1463PCP1310-33Interchangeable
interchangeable cross-reference
interchangeable
P1310APCP1310-33Interchangeable
interchangeable cross-reference
interchangeable
MILB933TYPEAInterchangeable
interchangeable cross-reference
interchangeable
E87886-2Interchangeable
interchangeable cross-reference
interchangeable
FF-S-210Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SP79979?
SP79979 is a NUT,PLAIN,HEXAGON.
What parts can replace SP79979?
There are 8 known substitutes for SP79979: P1310-33, P1463PCP1310-33, P1310APCP1310-33 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SP79979?
SP79979 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-262-5076. This indicates validated use in U.S. government and defense supply chains.
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