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A1721 — ADAPTER,AIRCRAFT JACKING POINT

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

A1721: ADAPTER,AIRCRAFT JACKING POINT.

The ADAPTER,AIRCRAFT JACKING POINT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1020, overall_height: 2.130 INCHES NOMINAL IN, overall_diameter: 1.500 INCHES NOMINAL IN, attachment_method: PLAIN SHANK, surface_treatment: ENAMEL AND CHROMATE ZINC, material_document_and_classification: QQ-S-630, COMP 1020-CANCELED FED SPEC SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-100-6168, 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
A1721
NSN: 3110-00-100-6168
NIINs: 001006168, 004458468
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 34623 — AM GENERAL LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 1020
overall_height2.130 INCHES NOMINAL IN
overall_diameter1.500 INCHES NOMINAL IN
attachment_methodPLAIN SHANK
surface_treatmentENAMEL AND CHROMATE ZINC
material_document_and_classificationQQ-S-630, COMP 1020-CANCELED FED SPEC SINGLE MATERIAL RESPONSE
surface_treatment_document_and_classificationMIL-P-8585-CANCELED MIL SPEC 2ND TREATMENT RESPONSE
NSN3110-00-100-6168
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: A1721 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
SUBSTITUTES & CROSS-REFERENCES 8
25310050411Reference document
Same NSN cross-reference
Reference document — Secondary reference
358074SReference document
Same NSN cross-reference
Reference document — Secondary reference
17022R1Reference document
Same NSN cross-reference
Reference document — Secondary reference
11-16BALLGRADE2Reference document
Same NSN cross-reference
Reference document — Secondary reference
185485PC769Reference document
Same NSN cross-reference
Reference document — Secondary reference
11-16BALLGRADE1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A1721?
A1721 is a ADAPTER,AIRCRAFT JACKING POINT.
What parts can replace A1721?
There are 8 known substitutes for A1721: 25310050411, 358074S, 17022R1 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A1721?
A1721 is cataloged in the U.S. Government catalog under NSN 3110-00-100-6168. 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.