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F278162 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

F278162: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include thickness: 0.080 INCHES NOMINAL IN, hole_diameter: 0.440 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN, overall_diameter: 0.660 INCHES MINIMUM AND 0.670 INCHES MAXIMUM IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND, cross-sectional_shape_style: RECTANGULAR. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-471-2938, 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
F278162
NSN: 5310-00-471-2938
FSC: 5310 — Nuts and Washers
CAGE: K0289 — BRITISH AEROSPACE (MILITARY AIRCRAFT & AEROSTRUCTURES) (GBR)
SPECIFICATIONS
thickness0.080 INCHES NOMINAL IN
hole_diameter0.440 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN
overall_diameter0.660 INCHES MINIMUM AND 0.670 INCHES MAXIMUM IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-471-2938
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: F278162 · 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
•
OVERALL DIAMETER: 0.660 INCHES MINIMUM AND 0.670 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.440 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN
•
THICKNESS: 0.080 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.660 INCHES MINIMUM AND 0.670 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.440 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN
THICKNESS0.080 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 2
5310-99-6036750Reference document
Same NSN cross-reference
Reference document — Informative reference only
5310-99-603Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 F278162?
F278162 is a WASHER,FLAT.
What parts can replace F278162?
There are 2 known substitutes for F278162: 5310-99-6036750, 5310-99-603. Substitute compatibility should be verified for your specific system.
What is the NSN for F278162?
F278162 is cataloged in the U.S. Government catalog under NSN 5310-00-471-2938. 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.