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A-445-111 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

A-445-111: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: PAN NO. 2, hole_diameter: 0.250 INCHES NOMINAL IN, overall_width: 0.250 INCHES NOMINAL IN, overall_height: 0.250 INCHES NOMINAL IN, overall_length: 0.500 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 5310-01-668-3729, 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-445-111
NSN: 5310-01-668-3729
NIINs: 016683729, 016689284, 016690858, 016690873, 016690876, 016690878, 016690890, 016690895, 016690898, 016690907
FSC: 5310 — Nuts and Washers
CAGE: 51802 — HANSOME ENERGY SYSTEMS INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_stylePAN NO. 2
thread_class2
hole_diameter0.250 INCHES NOMINAL IN
overall_width0.250 INCHES NOMINAL IN
overall_height0.250 INCHES NOMINAL IN
overall_length0.500 INCHES NOMINAL IN
fastener_length6.500 INCHES NOMINAL IN
special_featuresITEM 1/4 STD
style_designatorSPLIT HELICAL-RIGHT HAND
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
NSN5310-01-668-3729
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A-445-111 · 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
•
SURFACE TREATMENT: ZINC OVERALL
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESITEM 1/4 STD
SURFACE TREATMENTZINC OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER, FLAT
MATERIALSTEEL OVERALL
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 A-445-111?
A-445-111 is a WASHER,LOCK.
What is the NSN for A-445-111?
A-445-111 is cataloged in the U.S. Government catalog under NSN 5310-01-668-3729. 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.