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A-445-111PC99 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

A-445-111PC99: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.250 INCHES NOMINAL IN, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: ZINC OVERALL, end_item_identification: A.C. MOTOR, part_name_assigned_by_controlling_agency: POSITIVE SPLIT RING LOCKWASHER.

This part is cataloged in the U.S. Government catalog under NSN 5310-01-669-0895, 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
A-445-111PC99
NSN: 5310-01-669-0895
FSC: 5310 — Nuts and Washers
CAGE: 51802 — HANSOME ENERGY SYSTEMS INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.250 INCHES NOMINAL IN
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentZINC OVERALL
end_item_identificationA.C. MOTOR
part_name_assigned_by_controlling_agencyPOSITIVE SPLIT RING LOCKWASHER
NSN5310-01-669-0895
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A-445-111PC99 · 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: SPLIT HELICAL-RIGHT HAND
•
SURFACE TREATMENT: ZINC OVERALL
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
SURFACE TREATMENTZINC OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYPOSITIVE SPLIT RING LOCKWASHER
END ITEM IDENTIFICATIONA.C. MOTOR
MATERIALSTEEL OVERALL
HOLE DIAMETER0.250 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
A-445-111Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 A-445-111PC99?
A-445-111PC99 is a WASHER,LOCK.
What parts can replace A-445-111PC99?
There is 1 known substitute for A-445-111PC99: A-445-111. Substitute compatibility should be verified for your specific system.
What is the NSN for A-445-111PC99?
A-445-111PC99 is cataloged in the U.S. Government catalog under NSN 5310-01-669-0895. 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.