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FCO18 ✓ 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

CROWFOOT ATTACHMENT,SOCKET WRENC. Key specifications include material: STEEL OVERALL, overall_width: 1.188 INCHES NOMINAL IN, head_thickness: 0.234 INCHES NOMINAL IN, overall_length: 1.625 INCHES NOMINAL IN, drive_end_shape: SQUARE SINGLE END INTERNAL, style_designator: OPEN END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5120-01-131-4465, 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
FCO18
NSN: 5120-01-131-4465
FSC: 5120
CAGE: C7127 — SNA GERMANY GMBH (DEU)
SPECIFICATIONS
materialSTEEL OVERALL
overall_width1.188 INCHES NOMINAL IN
head_thickness0.234 INCHES NOMINAL IN
overall_length1.625 INCHES NOMINAL IN
drive_end_shapeSQUARE SINGLE END INTERNAL
style_designatorOPEN END
surface_treatmentCHROMIUM OVERALL
drive_surface_size0.375 INCHES NOMINAL SINGLE END IN
wrenching_surface_size0.562 INCHES NOMINAL SINGLE END IN
wrenching_surface_shapeOVAL SINGLE END INTERNAL
nondefinitive_spec/std_data2 TYPE AND 1 CLASS
specification/standard_data05047-ASME B107.100 CAT 21 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NSN5120-01-131-4465
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CROWFOOT ATTACHMENT,SOCKET WRENC TITLE COMPONENT PN FCO18 MFR CROWFOOT ATTACHMENT,SO
KEY FEATURES
•
SPECIFICATION/STANDARD DATA: 05047-ASME B107.21 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
DRIVE SURFACE SIZE: 0.375 INCHES NOMINAL SINGLE END IN
•
WRENCHING SURFACE SHAPE: OVAL SINGLE END INTERNAL
•
DRIVE END SHAPE: SQUARE SINGLE END INTERNAL
•
STYLE DESIGNATOR: OPEN END
•
MATERIAL: STEEL OVERALL
•
WRENCHING SURFACE SIZE: 0.562 INCHES NOMINAL SINGLE END IN
•
SURFACE TREATMENT: CHROMIUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
SPECIFICATION/STANDARD DATA05047-ASME B107.21 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
DRIVE SURFACE SIZE0.375 INCHES NOMINAL SINGLE END IN
WRENCHING SURFACE SHAPEOVAL SINGLE END INTERNAL
DRIVE END SHAPESQUARE SINGLE END INTERNAL
STYLE DESIGNATOROPEN END
MATERIALSTEEL OVERALL
WRENCHING SURFACE SIZE0.562 INCHES NOMINAL SINGLE END IN
SURFACE TREATMENTCHROMIUM OVERALL
HEAD THICKNESS0.234 INCHES NOMINAL IN
OVERALL WIDTH1.188 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
500658Interchangeable
interchangeable cross-reference
interchangeable
4918Interchangeable
interchangeable cross-reference
interchangeable
EC25Interchangeable
interchangeable cross-reference
interchangeable
C350S1Interchangeable
interchangeable cross-reference
interchangeable
RCS350Interchangeable
interchangeable cross-reference
interchangeable
ES529754ISSUE1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FCO18?
FCO18 is a CROWFOOT ATTACHMENT,SOCKET WRENC.
What parts can replace FCO18?
There are 15 known substitutes for FCO18: 500658, 4918, EC25 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FCO18?
FCO18 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5120-01-131-4465. 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