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14278-40 — WASHER,SPRING TENSION

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

14278-40: WASHER,SPRING TENSION.

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.219 INCHES NOMINAL0.219 INCHES NOMINAL IN, overall_height: 0.062 INCHES NOMINAL0.062 INCHES NOMINAL IN, outside_diameter: 0.406 INCHES NOMINAL0.406 INCHES NOMINAL IN, material_thickness: 0.009 INCHES NOMINAL0.009 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-019-2351, 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
14278-40
NSN: 5310-01-019-2351
FSC: 5310 — Nuts and Washers
CAGE: 41387 — SIEMENS INDUSTRY, INC. DBA SIEMENS ENERGY DIV PROCESS INDUSTRIES AND DRIVES (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.219 INCHES NOMINAL0.219 INCHES NOMINAL IN
overall_height0.062 INCHES NOMINAL0.062 INCHES NOMINAL IN
outside_diameter0.406 INCHES NOMINAL0.406 INCHES NOMINAL IN
material_thickness0.009 INCHES NOMINAL0.009 INCHES NOMINAL IN
NSN5310-01-019-2351
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 14278-40 · 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
•
OUTSIDE DIAMETER: 0.406 INCHES NOMINAL0.406 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.009 INCHES NOMINAL0.009 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 0.219 INCHES NOMINAL0.219 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.062 INCHES NOMINAL0.062 INCHES NOMINAL IN
OUTSIDE DIAMETER0.406 INCHES NOMINAL0.406 INCHES NOMINAL IN
MATERIAL THICKNESS0.009 INCHES NOMINAL0.009 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
HOLE DIAMETER0.219 INCHES NOMINAL0.219 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

No substitute or cross-reference records for this part.

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 14278-40?
14278-40 is a WASHER,SPRING TENSION.
What is the NSN for 14278-40?
14278-40 is cataloged in the U.S. Government catalog under NSN 5310-01-019-2351. 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.