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2578853-2 — WASHER,SPRING TENSION

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

2578853-2: WASHER,SPRING TENSION.

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: BERYLLIUM COPPER (USE CUB000) OVERALL, hole_diameter: 0.164 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN, overall_height: 0.032 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN, outside_diameter: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN, special_features: HALF HARD HEAT TREATED TO ROCKWELL 15N77 MINIMUM, style_designator: SPRING TENSION. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-519-3835, 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
2578853-2
NSN: 5310-01-519-3835
FSC: 5310 — Nuts and Washers
CAGE: 3BMV1 — FIRSTMARK AEROSPACE CORP (USA)
SPECIFICATIONS
materialBERYLLIUM COPPER (USE CUB000) OVERALL
hole_diameter0.164 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN
overall_height0.032 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
outside_diameter0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
special_featuresHALF HARD HEAT TREATED TO ROCKWELL 15N77 MINIMUM
style_designatorSPRING TENSION
surface_treatmentCADMIUM OVERALL
material_thickness0.016 INCHES NOMINAL IN
end_item_identification6605-00-782-0281
NSN5310-01-519-3835
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2578853-2 · 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
•
OUTSIDE DIAMETER: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.016 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MATERIAL: BERYLLIUM COPPER (USE CUB000) OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.032 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
STYLE DESIGNATORSPRING TENSION
OUTSIDE DIAMETER0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
MATERIAL THICKNESS0.016 INCHES NOMINAL IN
SPECIAL FEATURESHALF HARD HEAT TREATED TO ROCKWELL 15N77 MINIMUM
SURFACE TREATMENTCADMIUM OVERALL
END ITEM IDENTIFICATION6605-00-782-0281
MATERIALBERYLLIUM COPPER (USE CUB000) OVERALL
HOLE DIAMETER0.164 INCHES MINIMUM AND 0.170 INCHES MAXIMUM 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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2578853-2?
2578853-2 is a WASHER,SPRING TENSION.
What is the NSN for 2578853-2?
2578853-2 is cataloged in the U.S. Government catalog under NSN 5310-01-519-3835. 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.