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90073A009 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

90073A009: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include hardness_rating: 38.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM, special_features: MATT: STEEL, closed_inside_diameter: 0.174 INCHES NOMINAL IN, closed_outside_diameter: 0.267 INCHES NOMINAL IN, end_item_identification: 2320-01-437-6957 ARMORED SECURITY VEHICLE (ASV), part_name_assigned_by_controlling_agency: LOCK WASHER. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-574-5519, 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
90073A009
NSN: 5310-01-574-5519
FSC: 5310 — Nuts and Washers
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
hardness_rating38.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM
special_featuresMATT: STEEL
closed_inside_diameter0.174 INCHES NOMINAL IN
closed_outside_diameter0.267 INCHES NOMINAL IN
end_item_identification2320-01-437-6957 ARMORED SECURITY VEHICLE (ASV)
part_name_assigned_by_controlling_agencyLOCK WASHER
NSN5310-01-574-5519
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 90073A009 · 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: 38.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM
•
CLOSED OUTSIDE DIAMETER: 0.267 INCHES NOMINAL IN
•
CLOSED INSIDE DIAMETER: 0.174 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM
CLOSED OUTSIDE DIAMETER0.267 INCHES NOMINAL IN
SPECIAL FEATURESMATT: STEEL
PART NAME ASSIGNED BY CONTROLLING AGENCYLOCK WASHER
END ITEM IDENTIFICATION2320-01-437-6957 ARMORED SECURITY VEHICLE (ASV)
CLOSED INSIDE DIAMETER0.174 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 1
23KP464Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 90073A009?
90073A009 is a WASHER,LOCK.
What parts can replace 90073A009?
There is 1 known substitute for 90073A009: 23KP464. Substitute compatibility should be verified for your specific system.
What is the NSN for 90073A009?
90073A009 is cataloged in the U.S. Government catalog under NSN 5310-01-574-5519. 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.