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ST3M776C1-122P — NUT ASSEMBLY,RETAINER RING

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

ST3M776C1-122P: NUT ASSEMBLY,RETAINER RING.

The NUT ASSEMBLY,RETAINER RING is a the manufacturer industrial component. Key specifications include end_item_identification: F/A-18 EF AIRCRAFT. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-563-4882, 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
ST3M776C1-122P
NSN: 5310-01-563-4882
NIINs: 015634882, 016441200
FSC: 5310 — Nuts and Washers
CAGE: 80539 — SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP DIV AEROSPACE - SANTA ANA (USA)
SPECIFICATIONS
end_item_identificationF/A-18 EF AIRCRAFT
NSN5310-01-563-4882
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: ST3M776C1-122P · 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
•
LUBRICATION: DRY FILM LUBRICANT
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
NUT QUANTITY: 2
•
NUT COUNTERBORE DEPTH: 0.062 INCHES MINIMUM NUT IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN
•
SURFACE TREATMENT: PASSIVATE CHANNEL
TECHNICAL CHARACTERISTICS
LUBRICATIONDRY FILM LUBRICANT
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
NUT QUANTITY2
NUT COUNTERBORE DEPTH0.062 INCHES MINIMUM NUT IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.375 INCHES IN
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
SURFACE TREATMENTPASSIVATE CHANNEL
NUT STYLEGANG CHANNEL, SELF LOCKING
THREAD CLASS3B
SUBSTITUTES & CROSS-REFERENCES 1
G50345-6P1F12-2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ST3M776C1-122P?
ST3M776C1-122P is a NUT ASSEMBLY,RETAINER RING.
What parts can replace ST3M776C1-122P?
There is 1 known substitute for ST3M776C1-122P: G50345-6P1F12-2. Substitute compatibility should be verified for your specific system.
What is the NSN for ST3M776C1-122P?
ST3M776C1-122P is cataloged in the U.S. Government catalog under NSN 5310-01-563-4882. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.