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PartsTable / COMPONENT / 80276-011
80276-011 ✓ 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 WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, hole_diameter: 0.256 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN, outside_diameter: 0.466 INCHES MINIMUM AND 0.478 INCHES MAXIMUM IN, style_designator: FLAT INTERNAL TEETH, material_thickness: 0.025 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-271-7452, 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
80276-011
NSN: 5310-00-271-7452
FSC: 5310
CAGE: 06481 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN SYSTEMS CORP (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
hole_diameter0.256 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
outside_diameter0.466 INCHES MINIMUM AND 0.478 INCHES MAXIMUM IN
style_designatorFLAT INTERNAL TEETH
material_thickness0.025 INCHES NOMINAL IN
NSN5310-00-271-7452
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 80276-011 · 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
•
STYLE DESIGNATOR: FLAT INTERNAL TEETH
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
MATERIAL THICKNESS: 0.025 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.256 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.466 INCHES MINIMUM AND 0.478 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORFLAT INTERNAL TEETH
MATERIALSTEEL CORROSION RESISTING OVERALL
MATERIAL THICKNESS0.025 INCHES NOMINAL IN
HOLE DIAMETER0.256 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.466 INCHES MINIMUM AND 0.478 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
175-511Interchangeable
interchangeable cross-reference
interchangeable
511Interchangeable
interchangeable cross-reference
interchangeable
175226-175273Interchangeable
interchangeable cross-reference
interchangeable
164LSK1127NH7135Interchangeable
interchangeable cross-reference
interchangeable
164HSK1127NH7135Interchangeable
interchangeable cross-reference
interchangeable
MS35333-74Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 80276-011?
80276-011 is a WASHER,LOCK.
What parts can replace 80276-011?
There are 11 known substitutes for 80276-011: 175-511, 511, 175226-175273 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 80276-011?
80276-011 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-271-7452. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026