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W20166-22 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

W20166-22: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 OVERALL, thickness: 0.040 INCHES MINIMUM AND 0.044 INCHES MAXIMUM IN, hole_diameter: 0.190 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN, overall_diameter: 0.437 INCHES NOMINAL IN, surface_treatment: OXIDE FILM OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-225-7752, 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
W20166-22
NSN: 5310-01-225-7752
FSC: 5310 — Nuts and Washers
CAGE: 70255 — EMERSON ELECTRIC CO ALCO CONTROLS DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 302 OVERALL
thickness0.040 INCHES MINIMUM AND 0.044 INCHES MAXIMUM IN
hole_diameter0.190 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
overall_diameter0.437 INCHES NOMINAL IN
surface_treatmentOXIDE FILM OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
surface_treatment_document_and_classificationMIL-C-13924B,CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-225-7752
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: W20166-22 · 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 DOCUMENT AND CLASSIFICATION: MIL-C-13924B,CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
OVERALL DIAMETER: 0.437 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
COLOR: BLACK OVERALL
•
SURFACE TREATMENT: OXIDE FILM OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL COMP 302 OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-13924B,CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
OVERALL DIAMETER0.437 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
COLORBLACK OVERALL
SURFACE TREATMENTOXIDE FILM OVERALL
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL COMP 302 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.190 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
THICKNESS0.040 INCHES MINIMUM AND 0.044 INCHES MAXIMUM 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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is W20166-22?
W20166-22 is a WASHER,FLAT.
What is the NSN for W20166-22?
W20166-22 is cataloged in the U.S. Government catalog under NSN 5310-01-225-7752. This indicates validated use in U.S. government and defense supply chains.
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