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PartsTable / COMPONENT / 61H492-4
61H492-4 ✓ 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: RUBBER SYNTHETIC OVERALL, thickness: 0.066 INCHES NOMINAL IN, hole_diameter: 0.365 INCHES NOMINAL IN, hardness_rating: 55.0 DUROMETER MINIMUM AND 65.0 DUROMETER MAXIMUM, overall_diameter: 0.497 INCHES NOMINAL IN, peripheral_shape_style: ROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-246-8769, 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
61H492-4
NSN: 5310-00-246-8769
FSC: 5310
CAGE: 48521 — COLT INDUSTRIES OPERATING CORP PRATT AND WHITNEY MACHINE TOOL DIV
SPECIFICATIONS
materialRUBBER SYNTHETIC OVERALL
thickness0.066 INCHES NOMINAL IN
hole_diameter0.365 INCHES NOMINAL IN
hardness_rating55.0 DUROMETER MINIMUM AND 65.0 DUROMETER MAXIMUM
overall_diameter0.497 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationAMS 3212 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-246-8769
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 61H492-4 · 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
•
HARDNESS RATING: 55.0 DUROMETER MINIMUM AND 65.0 DUROMETER MAXIMUM
•
MATERIAL: RUBBER SYNTHETIC OVERALL
•
OVERALL DIAMETER: 0.497 INCHES NOMINAL IN
•
THICKNESS: 0.066 INCHES NOMINAL IN
•
PERIPHERAL SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.365 INCHES NOMINAL IN
•
CENTER HOLE SHAPE STYLE: ROUND
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 3212 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
HARDNESS RATING55.0 DUROMETER MINIMUM AND 65.0 DUROMETER MAXIMUM
MATERIALRUBBER SYNTHETIC OVERALL
OVERALL DIAMETER0.497 INCHES NOMINAL IN
THICKNESS0.066 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLEROUND
HOLE DIAMETER0.365 INCHES NOMINAL IN
CENTER HOLE SHAPE STYLEROUND
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 3212 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
AN-6290-4Interchangeable
interchangeable cross-reference
interchangeable
D6-4Interchangeable
interchangeable cross-reference
interchangeable
AS28778-4Interchangeable
interchangeable cross-reference
interchangeable
695-D-7683ITEM17Interchangeable
interchangeable cross-reference
interchangeable
MS28778-4Interchangeable
interchangeable cross-reference
interchangeable
AN902-4Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 61H492-4?
61H492-4 is a WASHER,FLAT.
What parts can replace 61H492-4?
There are 6 known substitutes for 61H492-4: AN-6290-4, D6-4, AS28778-4 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 61H492-4?
61H492-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-246-8769. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026