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Z4028 ✓ 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 SYNTHETIC OVERALL, groove_width: 0.031 INCHES NOMINAL IN, grommet_style: ROUND, hole_diameter: 0.250 INCHES NOMINAL IN, overall_height: 0.187 INCHES NOMINAL IN, flange_thickness: 0.062 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 5325-00-701-5563, 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
Z4028
NSN: 5325-00-701-5563
FSC: 5325
CAGE: 76385 — MINOR RUBBER CO INC (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC OVERALL
groove_width0.031 INCHES NOMINAL IN
grommet_styleROUND
hole_diameter0.250 INCHES NOMINAL IN
overall_height0.187 INCHES NOMINAL IN
flange_thickness0.062 INCHES NOMINAL IN
groove_outside_diameter0.343 INCHES NOMINAL IN
grommet_construction_typeSOLID
large_flange_outside_diameter0.484 INCHES NOMINAL IN
NSN5325-00-701-5563
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: Z4028 · 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
•
FLANGE THICKNESS: 0.031 INCHES NOMINAL IN
•
GROMMET STYLE: ROUND
•
HOLE DIAMETER: 0.375 INCHES NOMINAL IN
•
GROOVE OUTSIDE DIAMETER: 0.687 INCHES NOMINAL IN
•
LARGE FLANGE OUTSIDE DIAMETER: 0.875 INCHES NOMINAL IN
•
GROMMET CONSTRUCTION TYPE: SOLID
•
GROOVE WIDTH: 0.125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL HEIGHT0.218 INCHES NOMINAL IN
FLANGE THICKNESS0.031 INCHES NOMINAL IN
GROMMET STYLEROUND
HOLE DIAMETER0.375 INCHES NOMINAL IN
GROOVE OUTSIDE DIAMETER0.687 INCHES NOMINAL IN
LARGE FLANGE OUTSIDE DIAMETER0.875 INCHES NOMINAL IN
GROMMET CONSTRUCTION TYPESOLID
GROOVE WIDTH0.125 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
5534-5Interchangeable
interchangeable cross-reference
interchangeable
Z4028Interchangeable
interchangeable cross-reference
interchangeable
344138-1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is Z4028?
Z4028 is a GROMMET,NONMETALLIC.
What parts can replace Z4028?
There are 3 known substitutes for Z4028: 5534-5, Z4028, 344138-1. Substitute compatibility should be verified for your specific system.
What is the NSN for Z4028?
Z4028 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-701-5563. 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