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90375A011 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

90375A011: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, hole_diameter: 0.19 INCHES NOMINAL IN, outside_diameter: 0.41 INCHES NOMINAL IN, style_designator: FLAT EXTERNAL TEETH, material_thickness: 0.01 INCHES MINIMUM AND 0.03 INCHES MAXIMUM IN, end_item_identification: THREAT EMITTE. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-606-1055, 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
90375A011
NSN: 5310-01-606-1055
FSC: 5310 — Nuts and Washers
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
hole_diameter0.19 INCHES NOMINAL IN
outside_diameter0.41 INCHES NOMINAL IN
style_designatorFLAT EXTERNAL TEETH
material_thickness0.01 INCHES MINIMUM AND 0.03 INCHES MAXIMUM IN
end_item_identificationTHREAT EMITTE
part_name_assigned_by_controlling_agencyCAGE: EXTERNAL-TOOTH LOCK WASHER
NSN5310-01-606-1055
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 90375A011 · 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: 0.41 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.01 INCHES MINIMUM AND 0.03 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 316 OVERALL
•
HOLE DIAMETER: 0.19 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORFLAT EXTERNAL TEETH
OUTSIDE DIAMETER0.41 INCHES NOMINAL IN
MATERIAL THICKNESS0.01 INCHES MINIMUM AND 0.03 INCHES MAXIMUM IN
PART NAME ASSIGNED BY CONTROLLING AGENCYCAGE: EXTERNAL-TOOTH LOCK WASHER
END ITEM IDENTIFICATIONTHREAT EMITTE
MATERIALSTEEL COMP 316 OVERALL
HOLE DIAMETER0.19 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 90375A011?
90375A011 is a WASHER,LOCK.
What is the NSN for 90375A011?
90375A011 is cataloged in the U.S. Government catalog under NSN 5310-01-606-1055. 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.