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PartsTable / COMPONENT / ST49D8-3
ST49D8-3 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The LADDER,SAFETY STEP is a the manufacturer industrial component. Key specifications include material: STEEL, handrails: NOT INCLUDED, step_length: 16.000 INCHES NOMINAL IN, overall_width: 20.000 INCHES NOMINAL IN, opposing_steps: NOT INCLUDED, overall_height: 38.000 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5440-01-306-2648, 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
ST49D8-3
NSN: 5440-01-306-2648
FSC: 5440
CAGE: 04236 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
materialSTEEL
handrailsNOT INCLUDED
step_length16.000 INCHES NOMINAL IN
overall_width20.000 INCHES NOMINAL IN
step_quantity4
opposing_stepsNOT INCLUDED
overall_height38.000 INCHES NOMINAL IN
top_step_width10.000 INCHES NOMINAL IN
wheel_diameter2.000 INCHES NOMINAL IN
locking_featureINCLUDED
special_featuresEXPANDED METAL ANTI-SKID TREADS
base_overall_length31.000 INCHES NOMINAL IN
NSN5440-01-306-2648
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available LADDER,SAFETY STEP TITLE COMPONENT PN ST49D8-3 MFR LADDER,SAFETY STEP
KEY FEATURES
•
TOP STEP WIDTH: 10.000 INCHES NOMINAL IN
•
HANDRAILS: NOT INCLUDED
•
LOCKING FEATURE: INCLUDED
•
BASE OVERALL LENGTH: 31.000 INCHES NOMINAL IN
•
WHEEL DIAMETER: 2.000 INCHES NOMINAL IN
•
INTERMEDIATE STEP WIDTH: 7.000 INCHES NOMINAL IN
•
OPPOSING STEPS: NOT INCLUDED
•
DISTANCE FROM BASE TO TOP STEP: 38.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
TOP STEP WIDTH10.000 INCHES NOMINAL IN
HANDRAILSNOT INCLUDED
LOCKING FEATUREINCLUDED
BASE OVERALL LENGTH31.000 INCHES NOMINAL IN
WHEEL DIAMETER2.000 INCHES NOMINAL IN
INTERMEDIATE STEP WIDTH7.000 INCHES NOMINAL IN
OPPOSING STEPSNOT INCLUDED
DISTANCE FROM BASE TO TOP STEP38.000 INCHES NOMINAL IN
ROLLING ELEMENT TYPE AND QUANTITY4 RETRACTABLE SWIVEL CASTER
SPECIAL FEATURESEXPANDED METAL ANTI-SKID TREADS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
4SInterchangeable
interchangeable cross-reference
interchangeable
P-4-SInterchangeable
interchangeable cross-reference
interchangeable
PR-2 (P3SX)Interchangeable
interchangeable cross-reference
interchangeable
ST49D8-2Interchangeable
interchangeable cross-reference
interchangeable
318XInterchangeable
interchangeable cross-reference
interchangeable
ST49D8Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ST49D8-3?
ST49D8-3 is a LADDER,SAFETY STEP.
What parts can replace ST49D8-3?
There are 7 known substitutes for ST49D8-3: 4S, P-4-S, PR-2 (P3SX) and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ST49D8-3?
ST49D8-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5440-01-306-2648. 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