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98449A525 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

98449A525: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, hole_diameter: 0.176 INCHES NOMINAL IN, hardness_rating: 34.0 ROCKWELL C NOMINAL, outside_diameter: 0.340 INCHES NOMINAL IN, special_features: ACTUAL MATL IS 410 STAINLESS STEEL, style_designator: FLAT INTERNAL TEETH. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-561-7019, 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
98449A525
NSN: 5310-01-561-7019
FSC: 5310 — Nuts and Washers
CAGE: 3A054 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
hole_diameter0.176 INCHES NOMINAL IN
hardness_rating34.0 ROCKWELL C NOMINAL
outside_diameter0.340 INCHES NOMINAL IN
special_featuresACTUAL MATL IS 410 STAINLESS STEEL
style_designatorFLAT INTERNAL TEETH
material_thickness0.018 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN
end_item_identification4920-01-511-0092
part_name_assigned_by_controlling_agencyINTERNAL-TOOTH LOCK WASHER
NSN5310-01-561-7019
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 98449A525 · 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
•
HARDNESS RATING: 34.0 ROCKWELL C NOMINAL
•
STYLE DESIGNATOR: FLAT INTERNAL TEETH
•
OUTSIDE DIAMETER: 0.340 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.018 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
TECHNICAL CHARACTERISTICS
HARDNESS RATING34.0 ROCKWELL C NOMINAL
STYLE DESIGNATORFLAT INTERNAL TEETH
OUTSIDE DIAMETER0.340 INCHES NOMINAL IN
MATERIAL THICKNESS0.018 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN
SPECIAL FEATURESACTUAL MATL IS 410 STAINLESS STEEL
PART NAME ASSIGNED BY CONTROLLING AGENCYINTERNAL-TOOTH LOCK WASHER
END ITEM IDENTIFICATION4920-01-511-0092
MATERIALSTEEL CORROSION RESISTING OVERALL
HOLE DIAMETER0.176 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 98449A525?
98449A525 is a WASHER,LOCK.
What is the NSN for 98449A525?
98449A525 is cataloged in the U.S. Government catalog under NSN 5310-01-561-7019. 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.