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593 — LADDER,AIRCRAFT BOARDING

✓ Government record, cited
Melissa & Doug · TAPERED BEARING
PRODUCT OVERVIEW

593: LADDER,AIRCRAFT BOARDING.

Keep your trunk clutter-free by putting your front wheels safely on your roof. Key specifications include material: STEEL CORROSION RESISTING SIDE RAIL, side_rail_length: 45.0 INCHES NOMINAL IN, crosspiece_length: 7.25 INCHES NOMINAL IN, part_name_assigned_by_controlling_agency: CABLE LADDER, 45. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-100-0646, 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
593
NSN: 3110-00-100-0646
NIINs: 001000646, 002231018, 002913650, 002932380, 003114811, 003473156, 003948214, 004737313, 005884131, 009006279, 009690482, 010280862, 011652363, 016738995, 017069346
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 01212 — FEDERAL-MOGUL CORP GOVERNMENT SALES DEPT (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING SIDE RAIL
side_rail_length45.0 INCHES NOMINAL IN
special_featuresWEIGHT 23.4 POUNDS; LOAD LIMIT RUNG SLIPPAGE OCCURS AT OVER 1,500 LBS; CABLE MATERIAL CABLE: 316 STAINLESS STEEL; RUNG MATERIAL GRADE 2 TITANIUM 18-GAUGE; TITANIUM COMPRESSION INSERTS. LBS
crosspiece_length7.25 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencyCABLE LADDER, 45
NSN3110-00-100-0646
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 593 · Melissa & Doug ⚠ 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 6
L1759Reference document
Same NSN cross-reference
Reference document — Secondary reference
30H14Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
38703DReference document
Same NSN cross-reference
Reference document — Secondary reference
FF-B-187/1Reference document
Same NSN cross-reference
Reference document — Identification reference
0BT593Reference document
Same NSN cross-reference
Reference document — Secondary reference
FF-B-187/01Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 593?
593 is a LADDER,AIRCRAFT BOARDING manufactured by Melissa & Doug.
What parts can replace 593?
There are 6 known substitutes for 593: L1759, 30H14, 38703D and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 593?
593 is cataloged in the U.S. Government catalog under NSN 3110-00-100-0646. 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.