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Technical Data Sheet
PartsTable / COMPONENT / MH121
MH121 ✓ 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,AIRCRAFT,MA is a the manufacturer industrial component. Key specifications include material: RUBBER NATURAL, part_name_assigned_by_controlling_agency: RUBBER GROMMET. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-01-584-0334, 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
MH121
NSN: 5325-01-584-0334
FSC: 5325
CAGE: 03240 — LIFT-A-LOFT, LLC (USA)
SPECIFICATIONS
materialRUBBER NATURAL
part_name_assigned_by_controlling_agencyRUBBER GROMMET
NSN5325-01-584-0334
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MH121 · 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
TECHNICAL CHARACTERISTICS (FLIS)
PART NAME ASSIGNED BY CONTROLLING AGENCYRUBBER GROMMET
MATERIALRUBBER NATURAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
4001/630-5/8Interchangeable
interchangeable cross-reference
interchangeable
60040Interchangeable
interchangeable cross-reference
interchangeable
23004183Interchangeable
interchangeable cross-reference
interchangeable
20A1199Interchangeable
interchangeable cross-reference
interchangeable
FS4055Interchangeable
interchangeable cross-reference
interchangeable
26351Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MH121?
MH121 is a GROMMET,AIRCRAFT,MA.
What parts can replace MH121?
There are 16 known substitutes for MH121: 4001/630-5/8, 60040, 23004183 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MH121?
MH121 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-01-584-0334. 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