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850166 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

850166: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include base_style: MEDIUM SCREW, bulb_style: A (ARBITRARY DESIGNATION), overall_length: 3.500 INCHES MAXIMUM IN, voltage_rating: 115.000 VOLTS MINIMUM AND 125.000 VOLTS MAXIMUM, wattage_rating: 25.000 WATTS, bulb_designator: A-15. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-466-4869, 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
850166
NSN: 5310-00-466-4869
NIINs: 004664869, 009141644
FSC: 5310 — Nuts and Washers
CAGE: 89749 — CLARK MATERIAL HANDLING COMPANY (USA)
SPECIFICATIONS
base_styleMEDIUM SCREW
bulb_styleA (ARBITRARY DESIGNATION)
overall_length3.500 INCHES MAXIMUM IN
voltage_rating115.000 VOLTS MINIMUM AND 125.000 VOLTS MAXIMUM
wattage_rating25.000 WATTS
bulb_designatorA-15
rated_average_lifeHOURS
light_center_length2.375 INCHES NOMINAL IN
light_output_rating210.000 LUMENS NOMINAL SINGLE RATING
filament_designationC-9
specification/standard_data08108-25A15-115/125V MANUFACTURERS STANDARD V
average_life_rating_in_hours1000.0
NSN5310-00-466-4869
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 850166 · 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
SUBSTITUTES & CROSS-REFERENCES 1
12CH208Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 850166?
850166 is a WASHER,FLAT.
What parts can replace 850166?
There is 1 known substitute for 850166: 12CH208. Substitute compatibility should be verified for your specific system.
What is the NSN for 850166?
850166 is cataloged in the U.S. Government catalog under NSN 5310-00-466-4869. 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.