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57421-24 — GROMMET,NONMETALLIC

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

57421-24: GROMMET,NONMETALLIC.

The GROMMET,NONMETALLIC is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC OVERALL, groove_width: 0.094 INCHES NOMINAL IN, grommet_style: ROUND, hole_diameter: 0.625 INCHES NOMINAL IN, overall_height: 0.344 INCHES NOMINAL IN, flange_thickness: 0.125 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-248-7133, 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
57421-24
NSN: 5325-00-248-7133
FSC: 5325 — Fastening Devices
CAGE: 49671 — LOCKHEED MARTIN CORPORATION DBA LOCKHEED MARTIN DIV LOCKHEED MARTIN (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC OVERALL
groove_width0.094 INCHES NOMINAL IN
grommet_styleROUND
hole_diameter0.625 INCHES NOMINAL IN
overall_height0.344 INCHES NOMINAL IN
flange_thickness0.125 INCHES NOMINAL IN
features_providedCOOLANT RESISTANT AND OIL RESISTANT
groove_outside_diameter0.750 INCHES NOMINAL IN
grommet_construction_typeSOLID
large_flange_outside_diameter1.000 INCHES NOMINAL IN
material_document_and_classificationASTMD2000BG515A14B24C32E036F19Z ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5325-00-248-7133
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 57421-24 · 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
•
GROMMET STYLE: ROUND
•
FLANGE THICKNESS: 0.125 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTMD2000BG515A14B24C32E036F19Z ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
FEATURES PROVIDED: COOLANT RESISTANT AND OIL RESISTANT
•
LARGE FLANGE OUTSIDE DIAMETER: 1.000 INCHES NOMINAL IN
•
COLOR: BLACK OVERALL
•
GROOVE OUTSIDE DIAMETER: 0.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.344 INCHES NOMINAL IN
GROMMET STYLEROUND
FLANGE THICKNESS0.125 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTMD2000BG515A14B24C32E036F19Z ASSN STD SINGLE MATERIAL RESPONSE OVERALL
FEATURES PROVIDEDCOOLANT RESISTANT AND OIL RESISTANT
LARGE FLANGE OUTSIDE DIAMETER1.000 INCHES NOMINAL IN
COLORBLACK OVERALL
GROOVE OUTSIDE DIAMETER0.750 INCHES NOMINAL IN
GROMMET CONSTRUCTION TYPESOLID
MATERIALRUBBER SYNTHETIC OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
K57421-24Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 57421-24?
57421-24 is a GROMMET,NONMETALLIC.
What parts can replace 57421-24?
There is 1 known substitute for 57421-24: K57421-24. Substitute compatibility should be verified for your specific system.
What is the NSN for 57421-24?
57421-24 is cataloged in the U.S. Government catalog under NSN 5325-00-248-7133. 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.