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PartsTable / COMPONENT / 1784785
1784785 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: WOOL COMP 16R1X OVERALL, thickness: 0.062 INCHES NOMINAL IN, hole_diameter: 0.469 INCHES NOMINAL IN, overall_diameter: 0.750 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-841-6376, 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
1784785
NSN: 5310-00-841-6376
FSC: 5310
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialWOOL COMP 16R1X OVERALL
thickness0.062 INCHES NOMINAL IN
hole_diameter0.469 INCHES NOMINAL IN
overall_diameter0.750 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
minimum_tensile_strength500 POUNDS PER SQUARE INCH LBS
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationC-F-206,TYPE 1,CL 16R1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-841-6376
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1784785 · 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
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
HOLE DIAMETER: 0.469 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: C-F-206,TYPE 1,CL 16R1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: WOOL COMP 16R1X OVERALL
•
MINIMUM TENSILE STRENGTH: 500 POUNDS PER SQUARE INCH LBS
•
THICKNESS: 0.062 INCHES NOMINAL IN
•
OVERALL DIAMETER: 0.750 INCHES NOMINAL IN
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.469 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONC-F-206,TYPE 1,CL 16R1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALWOOL COMP 16R1X OVERALL
MINIMUM TENSILE STRENGTH500 POUNDS PER SQUARE INCH LBS
THICKNESS0.062 INCHES NOMINAL IN
OVERALL DIAMETER0.750 INCHES NOMINAL IN
CENTER HOLE SHAPE STYLEROUND
PERIPHERAL SHAPE STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
4-1664Interchangeable
interchangeable cross-reference
interchangeable
720-1071BKInterchangeable
interchangeable cross-reference
interchangeable
720-1071Interchangeable
interchangeable cross-reference
interchangeable
FS-61466Interchangeable
interchangeable cross-reference
interchangeable
61466Interchangeable
interchangeable cross-reference
interchangeable
326003Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1784785?
1784785 is a WASHER,FLAT.
What parts can replace 1784785?
There are 7 known substitutes for 1784785: 4-1664, 720-1071BK, 720-1071 and 4 more. Substitute compatibility should be verified for your specific system.
Is 1784785 still available?
1784785 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026