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1AR27 ✓ 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 ADAPTER,SOCKET WRENCH is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_length: 2.875 INCHES NOMINAL IN, drive_end_shape: SQUARE FIRST END INTERNAL, outside_diameter: 2.000 INCHES MAXIMUM IN, style_designator: EXTERNAL-INTERNAL, features_provided: MANUAL TOOL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5120-01-399-9754, 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
1AR27
NSN: 5120-01-399-9754
FSC: 5120
CAGE: 25795 — W.W. GRAINGER, INC. DIV GOVERNMENT SALES DIVISION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_length2.875 INCHES NOMINAL IN
drive_end_shapeSQUARE FIRST END INTERNAL
outside_diameter2.000 INCHES MAXIMUM IN
style_designatorEXTERNAL-INTERNAL
features_providedMANUAL TOOL
surface_treatmentCHROMIUM OVERALL
drive_surface_size0.750 INCHES NOMINAL SECOND END IN
NSN5120-01-399-9754
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available ADAPTER,SOCKET WRENCH TITLE COMPONENT PN 1AR27 MFR ADAPTER,SOCKET WRENCH
KEY FEATURES
•
OUTSIDE DIAMETER: 2.000 INCHES MAXIMUM IN
•
DRIVE SURFACE SIZE: 0.750 INCHES NOMINAL SECOND END IN
•
STYLE DESIGNATOR: EXTERNAL-INTERNAL
•
SURFACE TREATMENT: CHROMIUM OVERALL
•
FEATURES PROVIDED: MANUAL TOOL
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER2.000 INCHES MAXIMUM IN
DRIVE SURFACE SIZE0.750 INCHES NOMINAL SECOND END IN
STYLE DESIGNATOREXTERNAL-INTERNAL
OVERALL LENGTH2.875 INCHES NOMINAL IN
DRIVE SURFACE SIZE1.000 INCHES NOMINAL FIRST END IN
SURFACE TREATMENTCHROMIUM OVERALL
FEATURES PROVIDEDMANUAL TOOL
MATERIALSTEEL OVERALL
DRIVE END SHAPESQUARE SECOND END EXTERNAL
DRIVE END SHAPESQUARE FIRST END INTERNAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
14951Interchangeable
interchangeable cross-reference
interchangeable
X5008/12/149 ITEM 51Interchangeable
interchangeable cross-reference
interchangeable
149/51Interchangeable
interchangeable cross-reference
interchangeable
X5008/12/149/51Interchangeable
interchangeable cross-reference
interchangeable
2678510Interchangeable
interchangeable cross-reference
interchangeable
5854Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1AR27?
1AR27 is a ADAPTER,SOCKET WRENCH.
What parts can replace 1AR27?
There are 20 known substitutes for 1AR27: 14951, X5008/12/149 ITEM 51, 149/51 and 17 more. Substitute compatibility should be verified for your specific system.
Is 1AR27 still available?
1AR27 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: July 2026