PartsTable
Technical Data Sheet
Download PDF

1881B251 — RETAINER ASSEMBLY,DOWNLOCK LINK

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

1881B251: RETAINER ASSEMBLY,DOWNLOCK LINK.

RETAINER ASSEMBLY,DOWNLOCK LINK. Key specifications include fsc_application_data: MAIN LANDING GEAR,DOWNLOCK, end_item_identification: AIRCRAFT B1B, general_characteristics_item_description: 1.250 IN. LG;MATL 4340 STEEL PER MIL-S-8844 CLASS 1 IN.

This part is cataloged in the U.S. Government catalog under NSN 1620-01-189-4175, 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
1881B251
NSN: 1620-01-189-4175
FSC: 1620 — Aircraft Landing Gear Components
CAGE: 6K4C8 — GOODRICH CORPORATION (USA)
SPECIFICATIONS
fsc_application_dataMAIN LANDING GEAR,DOWNLOCK
end_item_identificationAIRCRAFT B1B
general_characteristics_item_description1.250 IN. LG;MATL 4340 STEEL PER MIL-S-8844 CLASS 1 IN
NSN1620-01-189-4175
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RETAINER ASSEMBLY,DOWNLOCK LINK TITLE COMPONENT PN 1881B251 MFR RETAINER ASSEMBLY,DOWN
KEY FEATURES
•
FSC APPLICATION DATA: MAIN LANDING GEAR,DOWNLOCK
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: 1.250 IN. LG;MATL 4340 STEEL PER MIL-S-8844 CLASS 1 IN
TECHNICAL CHARACTERISTICS
FSC APPLICATION DATAMAIN LANDING GEAR,DOWNLOCK
GENERAL CHARACTERISTICS ITEM DESCRIPTION1.250 IN. LG;MATL 4340 STEEL PER MIL-S-8844 CLASS 1 IN
END ITEM IDENTIFICATIONAIRCRAFT B1B
OTHER ITEMS IN FSC 1620 — Aircraft Landing Gear Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1620-00-491-0877 1620-00-699-0282 1620-00-718-6770 1620-00-736-1020 1620-00-756-9181
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — critical (Q)
Ready to buy 1881B251?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 1881B251?
1881B251 is a RETAINER ASSEMBLY,DOWNLOCK LINK.
What is the NSN for 1881B251?
1881B251 is cataloged in the U.S. Government catalog under NSN 1620-01-189-4175. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 1881B251

✓ 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.