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3020188 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

3020188: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4340 OVERALL, thickness: 0.095 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN, hole_diameter: 0.430 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN, hardness_rating: 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM, overall_diameter: 0.6665 INCHES MINIMUM AND 0.6675 INCHES MAXIMUM IN, special_features: CHAMFER OD EDGES 0.030 IN. MIN THRU 0.040 IN.

MAX BY 45 DEG PLUS OR MINUS 5 DEG IN. This part is cataloged in the U.S. Government catalog under NSN 5310-00-005-0097, 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
3020188
NSN: 5310-00-005-0097
NIINs: 000050097, 013074184
FSC: 5310 — Nuts and Washers
CAGE: 00198 — PRATT & WHITNEY CANADA CORP DIV PRATT & WHITNEY CANADA CORP. (CAN)
SPECIFICATIONS
materialSTEEL COMP 4340 OVERALL
thickness0.095 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
hole_diameter0.430 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
hardness_rating35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
overall_diameter0.6665 INCHES MINIMUM AND 0.6675 INCHES MAXIMUM IN
special_featuresCHAMFER OD EDGES 0.030 IN. MIN THRU 0.040 IN. MAX BY 45 DEG PLUS OR MINUS 5 DEG IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationAMS 6415 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-005-0097
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3020188 · 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
•
OVERALL DIAMETER: 0.6665 INCHES MINIMUM AND 0.6675 INCHES MAXIMUM IN
•
HARDNESS RATING: 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6415 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL COMP 4340 OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.6665 INCHES MINIMUM AND 0.6675 INCHES MAXIMUM IN
HARDNESS RATING35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6415 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SPECIAL FEATURESCHAMFER OD EDGES 0.030 IN. MIN THRU 0.040 IN. MAX BY 45 DEG PLUS OR MINUS 5 DEG IN
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL COMP 4340 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.430 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
THICKNESS0.095 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
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 3020188?
3020188 is a WASHER,FLAT.
What is the NSN for 3020188?
3020188 is cataloged in the U.S. Government catalog under NSN 5310-00-005-0097. This indicates validated use in U.S. government and defense supply chains.
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