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9525609 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

9525609: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140 OVERALL, thickness: 0.308 INCHES MINIMUM AND 0.318 INCHES MAXIMUM IN, hole_diameter: 0.630 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN, hardness_rating: 40.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM, overall_diameter: 1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM IN, peripheral_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-904-4130, 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
9525609
NSN: 5310-00-904-4130
FSC: 5310 — Nuts and Washers
CAGE: 73842 — GOODYEAR TIRE AND RUBBER CO THE (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OVERALL
thickness0.308 INCHES MINIMUM AND 0.318 INCHES MAXIMUM IN
hole_diameter0.630 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM
overall_diameter1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
minimum_tensile_strength145000 POUNDS PER SQUARE INCH LBS
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationMIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-904-4130
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 9525609 · 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: 1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM IN
•
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
MINIMUM TENSILE STRENGTH: 145000 POUNDS PER SQUARE INCH LBS
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL COMP 4140 OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM IN
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
MINIMUM TENSILE STRENGTH145000 POUNDS PER SQUARE INCH LBS
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL COMP 4140 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.630 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN
THICKNESS0.308 INCHES MINIMUM AND 0.318 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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 9525609?
9525609 is a WASHER,FLAT.
What is the NSN for 9525609?
9525609 is cataloged in the U.S. Government catalog under NSN 5310-00-904-4130. 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.