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PartsTable / COMPONENT / C56353-18
C56353-18 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The GROMMET,NONMETALLIC is a the manufacturer industrial component. Key specifications include material: RUBBER NATURAL OVERALL, groove_width: 0.062 INCHES NOMINAL IN, grommet_style: ROUND, hole_diameter: 0.234 INCHES NOMINAL IN, overall_height: 0.312 INCHES NOMINAL IN, flange_thickness: 0.094 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-266-6632, 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
C56353-18
NSN: 5325-00-266-6632
FSC: 5325
CAGE: 06845 — RAYTHEON COMPANY DBA RAYTHEON CO (USA)
SPECIFICATIONS
materialRUBBER NATURAL OVERALL
groove_width0.062 INCHES NOMINAL IN
grommet_styleROUND
hole_diameter0.234 INCHES NOMINAL IN
overall_height0.312 INCHES NOMINAL IN
flange_thickness0.094 INCHES NOMINAL IN
groove_outside_diameter0.625 INCHES NOMINAL IN
grommet_construction_typeSOLID
large_flange_outside_diameter0.875 INCHES NOMINAL IN
NSN5325-00-266-6632
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: C56353-18 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL: RUBBER NATURAL OVERALL
•
HOLE DIAMETER: 0.234 INCHES NOMINAL IN
•
GROMMET STYLE: ROUND
•
GROOVE WIDTH: 0.062 INCHES NOMINAL IN
•
GROMMET CONSTRUCTION TYPE: SOLID
•
LARGE FLANGE OUTSIDE DIAMETER: 0.875 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.094 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER NATURAL OVERALL
HOLE DIAMETER0.234 INCHES NOMINAL IN
OVERALL HEIGHT0.312 INCHES NOMINAL IN
GROMMET STYLEROUND
GROOVE WIDTH0.062 INCHES NOMINAL IN
GROMMET CONSTRUCTION TYPESOLID
LARGE FLANGE OUTSIDE DIAMETER0.875 INCHES NOMINAL IN
FLANGE THICKNESS0.094 INCHES NOMINAL IN
GROOVE OUTSIDE DIAMETER0.625 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
28311Interchangeable
interchangeable cross-reference
interchangeable
6026-3147-3Interchangeable
interchangeable cross-reference
interchangeable
AN315-3RInterchangeable
interchangeable cross-reference
interchangeable
436-15Interchangeable
interchangeable cross-reference
interchangeable
2-436Interchangeable
interchangeable cross-reference
interchangeable
SCD2556-16Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C56353-18?
C56353-18 is a GROMMET,NONMETALLIC.
What parts can replace C56353-18?
There are 13 known substitutes for C56353-18: 28311, 6026-3147-3, AN315-3R and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for C56353-18?
C56353-18 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-266-6632. 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