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9976M79P03 — NUT,SELF-LOCKING,DOUBLE HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

9976M79P03: NUT,SELF-LOCKING,DOUBLE HEXAGON.

NUT,SELF-LOCKING,DOUBLE HEXAGON. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: DOUBLE HEXAGON, nut_height: 0.443 INCHES MINIMUM AND 0.463 INCHES MAXIMUM IN, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), locking_feature: PREVAILING TORQUE ALL METAL DESIGN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-176-8409, 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
9976M79P03
NSN: 5310-01-176-8409
FSC: 5310 — Nuts and Washers
CAGE: 07482 — GENERAL ELECTRIC COMPANY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleDOUBLE HEXAGON
nut_height0.443 INCHES MINIMUM AND 0.463 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
width_across_flats0.540 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN
nominal_thread_size0.375 INCHES IN
bearing_surface_typeFLAT
thread_quantity_per_inch24
NSN5310-01-176-8409
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 9976M79P03 · 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
•
WIDTH ACROSS FLATS: 0.540 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN
•
NUT HEIGHT: 0.443 INCHES MINIMUM AND 0.463 INCHES MAXIMUM IN
•
NUT STYLE: DOUBLE HEXAGON
•
THREAD CLASS: 3B
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.540 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.375 INCHES IN
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
NUT HEIGHT0.443 INCHES MINIMUM AND 0.463 INCHES MAXIMUM IN
NUT STYLEDOUBLE HEXAGON
THREAD CLASS3B
THREAD QUANTITY PER INCH24
MATERIALSTEEL CORROSION RESISTING OVERALL
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 4
SL3502C6Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
9976M79P02Reference document
Same NSN cross-reference
Reference document — Secondary reference
9976M79P01Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
9976M79P04Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 9976M79P03?
9976M79P03 is a NUT,SELF-LOCKING,DOUBLE HEXAGON.
What parts can replace 9976M79P03?
There are 4 known substitutes for 9976M79P03: SL3502C6, 9976M79P02, 9976M79P01 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 9976M79P03?
9976M79P03 is cataloged in the U.S. Government catalog under NSN 5310-01-176-8409. This indicates validated use in U.S. government and defense supply chains.
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