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3R103 — Technical Data Sheet

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— · 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 BOOT,DUST AND MOISTURE SEAL is a the manufacturer industrial component. Key specifications include material: STEEL, shank_shape: HEXAGON, overall_length: 4.875 INCHES NOMINAL IN, shank_width_across_flats: 0.375 INCHES NOMINAL IN, nondefinitive_spec/std_data: 2 TYPE AND 3 CLASS, specification/standard_data: 05047-ASME B107.410 CAT 48 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD. This part is cataloged in the Federal Logistics Information System under NSN 5120-01-399-9951, 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
3R103
NSN: 5120-01-399-9951
FSC: 5120
CAGE: 25795 — W.W. GRAINGER, INC. DIV GOVERNMENT SALES DIVISION (USA)
SPECIFICATIONS
materialSTEEL
shank_shapeHEXAGON
overall_length4.875 INCHES NOMINAL IN
shank_width_across_flats0.375 INCHES NOMINAL IN
nondefinitive_spec/std_data2 TYPE AND 3 CLASS
specification/standard_data05047-ASME B107.410 CAT 48 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NSN5120-01-399-9951
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BOOT,DUST AND MOISTURE SEAL TITLE COMPONENT PN 3R103 MFR BOOT,DUST AND MOISTURE
KEY FEATURES
•
SHANK SHAPE: HEXAGON
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 3 CLASS
•
SPECIFICATION/STANDARD DATA: 05047-ASME B107.410 CAT 48 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
SHANK WIDTH ACROSS FLATS: 0.375 INCHES NOMINAL IN
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
OVERALL LENGTH4.875 INCHES NOMINAL IN
SHANK SHAPEHEXAGON
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 3 CLASS
SPECIFICATION/STANDARD DATA05047-ASME B107.410 CAT 48 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SHANK WIDTH ACROSS FLATS0.375 INCHES NOMINAL IN
MATERIALSTEEL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
4138InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
52446InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
27798InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
7411818InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
010-302-0074InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
AS954InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3R103?
3R103 is a BOOT,DUST AND MOISTURE SEAL.
What parts can replace 3R103?
There are 17 known substitutes for 3R103: 4138, 52446, 27798 and 14 more. Substitute compatibility should be verified for your specific system.
Is 3R103 still available?
3R103 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026