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28-40063-7 — WASHER,SPRING TENSION

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

28-40063-7: WASHER,SPRING TENSION.

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, hole_diameter: 0.558 INCHES NOMINAL IN, outside_diameter: 2.375 INCHES NOMINAL IN, style_designator: SPRING TENSION, material_thickness: 0.103 INCHES NOMINAL IN, material_document_and_classification: QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-243-1803, 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
28-40063-7
NSN: 5310-01-243-1803
FSC: 5310 — Nuts and Washers
CAGE: 70236 — TACTAIR FLUID CONTROLS INC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
hole_diameter0.558 INCHES NOMINAL IN
outside_diameter2.375 INCHES NOMINAL IN
style_designatorSPRING TENSION
material_thickness0.103 INCHES NOMINAL IN
material_document_and_classificationQQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-243-1803
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 28-40063-7 · 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: SPRING TENSION
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 2.375 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.103 INCHES NOMINAL IN
•
MATERIAL: ALUMINUM ALLOY 2024 OVERALL
•
HOLE DIAMETER: 0.558 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSPRING TENSION
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER2.375 INCHES NOMINAL IN
MATERIAL THICKNESS0.103 INCHES NOMINAL IN
MATERIALALUMINUM ALLOY 2024 OVERALL
HOLE DIAMETER0.558 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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 28-40063-7?
28-40063-7 is a WASHER,SPRING TENSION.
What is the NSN for 28-40063-7?
28-40063-7 is cataloged in the U.S. Government catalog under NSN 5310-01-243-1803. 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.