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Z643 ✓ 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 color: BLACK OVERALL, material: RUBBER SYNTHETIC OVERALL, groove_width: 0.094 INCHES NOMINAL IN, grommet_style: ROUND, hole_diameter: 0.438 INCHES NOMINAL IN, overall_height: 0.218 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 5325-00-039-0025, 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
Z643
NSN: 5325-00-039-0025
FSC: 5325
CAGE: 76385 — MINOR RUBBER CO INC (USA)
SPECIFICATIONS
colorBLACK OVERALL
materialRUBBER SYNTHETIC OVERALL
groove_width0.094 INCHES NOMINAL IN
grommet_styleROUND
hole_diameter0.438 INCHES NOMINAL IN
overall_height0.218 INCHES NOMINAL IN
flange_thickness0.062 INCHES NOMINAL IN
features_providedCOOLANT RESISTANT AND OIL RESISTANT
groove_outside_diameter0.562 INCHES NOMINAL IN
grommet_construction_typeSOLID
large_flange_outside_diameter0.750 INCHES NOMINAL IN
material_document_and_classificationAMSTMD2000BG515A14B24C32E036F19Z ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5325-00-039-0025
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: Z643 · 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
•
COLOR: BLACK OVERALL
•
GROOVE WIDTH: 0.094 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.062 INCHES NOMINAL IN
•
LARGE FLANGE OUTSIDE DIAMETER: 0.750 INCHES NOMINAL IN
•
FEATURES PROVIDED: COOLANT RESISTANT AND OIL RESISTANT
•
GROMMET CONSTRUCTION TYPE: SOLID
•
GROOVE OUTSIDE DIAMETER: 0.562 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.438 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
COLORBLACK OVERALL
GROOVE WIDTH0.094 INCHES NOMINAL IN
FLANGE THICKNESS0.062 INCHES NOMINAL IN
LARGE FLANGE OUTSIDE DIAMETER0.750 INCHES NOMINAL IN
FEATURES PROVIDEDCOOLANT RESISTANT AND OIL RESISTANT
GROMMET CONSTRUCTION TYPESOLID
GROOVE OUTSIDE DIAMETER0.562 INCHES NOMINAL IN
HOLE DIAMETER0.438 INCHES NOMINAL IN
OVERALL HEIGHT0.218 INCHES NOMINAL IN
GROMMET STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
012916Interchangeable
interchangeable cross-reference
interchangeable
2922072-0-0Interchangeable
interchangeable cross-reference
interchangeable
1856974-16Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is Z643?
Z643 is a GROMMET,NONMETALLIC.
What parts can replace Z643?
There are 3 known substitutes for Z643: 012916, 2922072-0-0, 1856974-16. Substitute compatibility should be verified for your specific system.
What is the NSN for Z643?
Z643 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-039-0025. 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