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2-63278 — WASHER,SPLIT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

2-63278: WASHER,SPLIT.

The WASHER,SPLIT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1010 OVERALL, hole_diameter: 2.190 INCHES NOMINAL IN, outside_diameter: 2.880 INCHES NOMINAL IN, style_designator: SPLIT, material_thickness: 0.049 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-194-9232, 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
2-63278
NSN: 5310-01-194-9232
FSC: 5310 — Nuts and Washers
CAGE: 77873 — ROCKFORD POWERTRAIN INC DIV POWERTRAIN ROCKFORD, INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 1010 OVERALL
hole_diameter2.190 INCHES NOMINAL IN
outside_diameter2.880 INCHES NOMINAL IN
style_designatorSPLIT
material_thickness0.049 INCHES NOMINAL IN
NSN5310-01-194-9232
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2-63278 · 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: SPLIT
•
OUTSIDE DIAMETER: 2.880 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.049 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 1010 OVERALL
•
HOLE DIAMETER: 2.190 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSPLIT
OUTSIDE DIAMETER2.880 INCHES NOMINAL IN
MATERIAL THICKNESS0.049 INCHES NOMINAL IN
MATERIALSTEEL COMP 1010 OVERALL
HOLE DIAMETER2.190 INCHES NOMINAL IN
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 2
26436JReference document
Same NSN cross-reference
Reference document — Secondary reference
2-969-716-63278Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 2-63278?
2-63278 is a WASHER,SPLIT.
What parts can replace 2-63278?
There are 2 known substitutes for 2-63278: 26436J, 2-969-716-63278. Substitute compatibility should be verified for your specific system.
What is the NSN for 2-63278?
2-63278 is cataloged in the U.S. Government catalog under NSN 5310-01-194-9232. 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.