PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5253Adapter,socket Wrench

The Stanley Works Dba Stanley Proto · NSN 5120-01-399-9748 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-399-9748 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-399-9748. Primary manufacturer part number: 5253.
Features
  • Adapter,socket Wrench — FSC 5120
  • Outside Diameter: 0.875 INCHES MAXIMUM IN
  • Drive End Shape: SQUARE SECOND END EXTERNAL
  • Material: STEEL OVERALL
  • Drive Surface Size: 0.500 INCHES NOMINAL SECOND END IN
  • Style Designator: EXTERNAL-INTERNAL
  • Surface Treatment: CHROMIUM OVERALL
  • Drive Surface Size: 0.375 INCHES NOMINAL FIRST END IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Adapter,socket Wrench, cataloged under National Stock Number 5120-01-399-9748, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is The Stanley Works Dba Stanley Proto. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-399-9748
Primary Part Number5253
Item NameAdapter,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe Stanley Works Dba Stanley Proto
StatusACTIVE
Outside Diameter0.875 INCHES MAXIMUM IN
Drive End ShapeSQUARE SECOND END EXTERNAL
MaterialSTEEL OVERALL
Drive Surface Size0.500 INCHES NOMINAL SECOND END IN
Style DesignatorEXTERNAL-INTERNAL
Surface TreatmentCHROMIUM OVERALL
Drive Surface Size0.375 INCHES NOMINAL FIRST END IN
Features ProvidedMANUAL TOOL
Drive End ShapeSQUARE FIRST END INTERNAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6685-00-115-86905253 INTERCHANGEABLE
Thermometer,self-Indicating
Weksler Glass Thermometer Corp
1650-00-166-6108525-3 INTERCHANGEABLE
Plate,seal
Ontic Engineering & Manufacturing, Inc Dba Ontic Us
4720-00-323-241347-150-186-5 INTERCHANGEABLE
Hose,air Duct
Bell Textron Inc
4320-00-431-1694N5-253 INTERCHANGEABLE
End Bell Assembly
Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
5935-00-534-77548900-0185-001 INTERCHANGEABLE
Connector,receptacle,electrical
Antenna Products Corporation Dba Antenna Products Corp
5935-00-725-3166 INTERCHANGEABLE
Connector,receptacle,electrical
6680-00-758-9330M144 INTERCHANGEABLE
Indicator,sight,liquid
Eaton Aerospace Llc Div Fluid and Electrical Distribution Division
5975-00-899-023574349A INTERCHANGEABLE
Box Connector,electrical
Air Products & Chemicals, Inc
5305-01-179-90015253 INTERCHANGEABLE
Screw,cap,hexagon Head
Erie Malleable Iron Co
5995-01-244-29531640891-42 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Raytheon Company Div Rmd Strategic
Cross-Reference Index
Part NumberManufacturer
1AH97 W.w. Grainger, Inc. Div Government Sales Division (USA)
5253 PRIMARY The Stanley Works Dba Stanley Proto (USA)
Related Parts
6685-00-115-8690INTERCHANGEABLE
THERMOMETER,SELF-INDICATING
5253
1650-00-166-6108INTERCHANGEABLE
PLATE,SEAL
525-3
4720-00-323-2413INTERCHANGEABLE
HOSE,AIR DUCT
47-150-186-5
4320-00-431-1694INTERCHANGEABLE
END BELL ASSEMBLY
N5-253
5935-00-534-7754INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
8900-0185-001
5935-00-725-3166INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
6680-00-758-9330INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
M144
5975-00-899-0235INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
74349A
5305-01-179-9001INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5253
5995-01-244-2953INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
1640891-42
5120-01-335-0701INTERCHANGEABLE
ADAPTER,SOCKET WRENCH
1560-01-436-5105INTERCHANGEABLE
TANK,FUEL,AIRCRAFT

Frequently Asked Questions

What is NSN 5120-01-399-9748?

NSN 5120-01-399-9748 is a Adapter,socket Wrench, manufactured by The Stanley Works Dba Stanley Proto, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-399-9748?

NSN 5120-01-399-9748 has 2 cross-referenced part numbers: 1AH97 (W.w. Grainger, Inc. Div Government Sales Division), 5253 (The Stanley Works Dba Stanley Proto).

What NSN replaces 5120-01-399-9748?

There are 12 known substitutes for 5120-01-399-9748: 6685-00-115-8690, 1650-00-166-6108, 4720-00-323-2413 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5253?

Key specifications for 5253: Outside Diameter: 0.875 INCHES MAXIMUM IN; Overall Length: 1.219 INCHES NOMINAL IN; Drive End Shape: SQUARE SECOND END EXTERNAL; Material: STEEL OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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