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57421-3 — GROMMET,NONMETALLIC

✓ Government record, cited
Legrand · BOLT SCREW
PRODUCT OVERVIEW

57421-3: GROMMET,NONMETALLIC.

The GROMMET,NONMETALLIC is a Legrand industrial component. Key specifications include material: RUBBER SYNTHETIC OVERALL, groove_width: 0.060 INCHES NOMINAL IN, grommet_style: ROUND, hole_diameter: 0.330 INCHES NOMINAL IN, overall_height: 0.310 INCHES NOMINAL IN, flange_thickness: 0.125 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-722-8554, 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
57421-3
NSN: 5325-00-722-8554
FSC: 5325 — Fastening Devices
CAGE: 02734 — LOCKHEED MARTIN CORPORATION DBA LOCKHEED MARTIN AEROSTRUCTURES DIV ADVANCED TECHNOLOGY LABORATORIES (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC OVERALL
groove_width0.060 INCHES NOMINAL IN
grommet_styleROUND
hole_diameter0.330 INCHES NOMINAL IN
overall_height0.310 INCHES NOMINAL IN
flange_thickness0.125 INCHES NOMINAL IN
groove_outside_diameter0.530 INCHES NOMINAL IN
grommet_construction_typeSOLID
large_flange_outside_diameter0.720 INCHES NOMINAL IN
NSN5325-00-722-8554
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 57421-3 · Legrand ⚠ 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
•
GROMMET STYLE: ROUND
•
FLANGE THICKNESS: 0.125 INCHES NOMINAL IN
•
LARGE FLANGE OUTSIDE DIAMETER: 0.720 INCHES NOMINAL IN
•
GROOVE OUTSIDE DIAMETER: 0.530 INCHES NOMINAL IN
•
GROMMET CONSTRUCTION TYPE: SOLID
•
MATERIAL: RUBBER SYNTHETIC OVERALL
•
GROOVE WIDTH: 0.060 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.310 INCHES NOMINAL IN
GROMMET STYLEROUND
FLANGE THICKNESS0.125 INCHES NOMINAL IN
LARGE FLANGE OUTSIDE DIAMETER0.720 INCHES NOMINAL IN
GROOVE OUTSIDE DIAMETER0.530 INCHES NOMINAL IN
GROMMET CONSTRUCTION TYPESOLID
MATERIALRUBBER SYNTHETIC OVERALL
GROOVE WIDTH0.060 INCHES NOMINAL IN
HOLE DIAMETER0.330 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 57421-3?
57421-3 is a GROMMET,NONMETALLIC manufactured by Legrand.
What is the NSN for 57421-3?
57421-3 is cataloged in the U.S. Government catalog under NSN 5325-00-722-8554. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.