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D1742A ✓ 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: IRON OVERALL, thickness: 0.032 INCHES NOMINAL IN, hole_diameter: 0.173 INCHES NOMINAL IN, overall_diameter: 0.438 INCHES NOMINAL IN, surface_treatment: ZINC OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-285-1514, 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
D1742A
NSN: 5310-00-285-1514
FSC: 5310
CAGE: 04773 — GTE COMMUNICATION SYSTEMS CORP (USA)
SPECIFICATIONS
materialIRON OVERALL
thickness0.032 INCHES NOMINAL IN
hole_diameter0.173 INCHES NOMINAL IN
overall_diameter0.438 INCHES NOMINAL IN
surface_treatmentZINC OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-285-1514
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: D1742A · 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
•
MATERIAL: IRON OVERALL
•
OVERALL DIAMETER: 0.438 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.173 INCHES NOMINAL IN
•
PERIPHERAL SHAPE STYLE: ROUND
•
SURFACE TREATMENT: ZINC OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
THICKNESS: 0.032 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALIRON OVERALL
OVERALL DIAMETER0.438 INCHES NOMINAL IN
HOLE DIAMETER0.173 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENTZINC OVERALL
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
THICKNESS0.032 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
83497Interchangeable
interchangeable cross-reference
interchangeable
9B3386Interchangeable
interchangeable cross-reference
interchangeable
TD6479SInterchangeable
interchangeable cross-reference
interchangeable
6479Interchangeable
interchangeable cross-reference
interchangeable
D1742JInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D1742A?
D1742A is a WASHER,FLAT.
What parts can replace D1742A?
There are 5 known substitutes for D1742A: 83497, 9B3386, TD6479S and 2 more. Substitute compatibility should be verified for your specific system.
Is D1742A still available?
D1742A 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