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90375A009 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

90375A009: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, hole_diameter: 0.160 INCHES NOMINAL IN, outside_diameter: 0.390 INCHES NOMINAL IN, special_features: ITEM FOR NUMBER 8 SCREW SIZE, style_designator: FLAT EXTERNAL TEETH, material_thickness: 0.010 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-606-1470, 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
90375A009
NSN: 5310-01-606-1470
FSC: 5310 — Nuts and Washers
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
hole_diameter0.160 INCHES NOMINAL IN
outside_diameter0.390 INCHES NOMINAL IN
special_featuresITEM FOR NUMBER 8 SCREW SIZE
style_designatorFLAT EXTERNAL TEETH
material_thickness0.010 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN
end_item_identificationTHREAT EMITTE
part_name_assigned_by_controlling_agencyCAGE: EXTERNAL-TOOTH LOCK WASHER
NSN5310-01-606-1470
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 90375A009 · 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: FLAT EXTERNAL TEETH
•
OUTSIDE DIAMETER: 0.390 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.010 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 316 OVERALL
•
HOLE DIAMETER: 0.160 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORFLAT EXTERNAL TEETH
OUTSIDE DIAMETER0.390 INCHES NOMINAL IN
MATERIAL THICKNESS0.010 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN
SPECIAL FEATURESITEM FOR NUMBER 8 SCREW SIZE
PART NAME ASSIGNED BY CONTROLLING AGENCYCAGE: EXTERNAL-TOOTH LOCK WASHER
END ITEM IDENTIFICATIONTHREAT EMITTE
MATERIALSTEEL COMP 316 OVERALL
HOLE DIAMETER0.160 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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 90375A009?
90375A009 is a WASHER,LOCK.
What is the NSN for 90375A009?
90375A009 is cataloged in the U.S. Government catalog under NSN 5310-01-606-1470. 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.