PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4257Adapter,socket Wrench

Sears, Roebuck and Co. Dba Sears Div Sears Commercial · NSN 5120-00-227-8095 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-227-8095 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-227-8095. Primary manufacturer part number: 4257.
Features
  • Adapter,socket Wrench — FSC 5120
  • Outside Diameter: 0.688 INCHES MAXIMUM IN
  • Surface Treatment: CHROMIUM OVERALL
  • Drive End Shape: SQUARE SECOND END EXTERNAL
  • Material: STEEL OVERALL
  • Drive Surface Size: 0.375 INCHES NOMINAL FIRST END IN
  • Features Provided: MANUAL TOOL
  • Drive End Shape: SQUARE FIRST END INTERNAL
Applications
  • Applications requiring Steel Overall construction
General Description

The Adapter,socket Wrench, cataloged under National Stock Number 5120-00-227-8095, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Sears, Roebuck and Co. Dba Sears Div Sears Commercial. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 28 commercial cross-references from 16 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-00-227-8095
Primary Part Number4257
Item NameAdapter,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerSears, Roebuck and Co. Dba Sears Div Sears Commercial
StatusCANCELLED
Outside Diameter0.688 INCHES MAXIMUM IN
Surface TreatmentCHROMIUM OVERALL
Drive End ShapeSQUARE SECOND END EXTERNAL
MaterialSTEEL OVERALL
Drive Surface Size0.375 INCHES NOMINAL FIRST END IN
Features ProvidedMANUAL TOOL
Drive End ShapeSQUARE FIRST END INTERNAL
Drive Surface Size0.250 INCHES NOMINAL SECOND END IN
Style DesignatorEXTERNAL-INTERNAL
Nondefinitive Spec/std Data2 TYPE AND 3 CLASS AND A STYLE
Specification/standard Data05047-ASME B107.110 CAT 10 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5310-00-058-7986 INTERCHANGEABLE
Nut,plain,hexagon
5999-00-122-647594257 INTERCHANGEABLE
Contact,electrical
L3 Technologies, Inc. Div L3harris Edo Western Corporation
5120-00-144-5207 INTERCHANGEABLE
Adapter,socket Wrench
2810-00-148-4600143519 INTERCHANGEABLE
Strainer,oil Pump
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
5120-00-224-921986-002 INTERCHANGEABLE
Adapter,socket Wrench
The Stanley Works Dba Stanley Proto
5120-00-227-8088 INTERCHANGEABLE
Adapter,socket Wrench
5120-00-227-8103 INTERCHANGEABLE
Adapter,socket Wrench
5120-00-227-8104 INTERCHANGEABLE
Adapter,socket Wrench
5120-00-240-8702 INTERCHANGEABLE
Adapter,socket Wrench
5120-00-240-8703 INTERCHANGEABLE
Adapter,socket Wrench
Cross-Reference Index
Part NumberManufacturer
4257 Sears, Roebuck and Co. Dba Sears Div Sears Commercial (USA)
B107.10 The American Society of Mechanical Engineers (USA)
B107.10 TY2CL3STA General Services Administration Federal Supply Service (USA)
11-951 Armstrong Bros Tool Co (USA)
B107.10M The American Society of Mechanical Engineers (USA)
A11-951 Henchman Products Pty Ltd (AUS)
B107.110 The American Society of Mechanical Engineers (USA)
2503253-2 Honeywell International Inc. Dba Honeywell International (USA)
GGG-W-641 TY4CL5STA General Services Administration Federal Supply Service (USA)
J5255 The Stanley Works Dba Stanley Proto (USA)
9-4257 Sears, Roebuck and Co. Dba Sears Div Sears Commercial (USA)
41A19-948 W1d1 Natick Soldier Center Dba Us Army Ccdc Soldier Center Div Combat Capabilities Development Command - Soldier Center (USA)
GGG-W-641 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
TY2CL3STA General Services Administration Federal Supply Service (USA)
5522A41 Mcmaster-Carr Supply Co (USA)
3305763-1 Mission Systems Davenport Inc. (USA)
B107.110 CAT 10 The American Society of Mechanical Engineers (USA)
9-4256 Sears, Roebuck and Co. Dba Sears Div Sears Commercial (USA)
A11-951 Henchman Group Pty Ltd the Trustee for Henchman Unit Trust (AUS)
11-951 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
Related Parts
5310-00-058-7986INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5999-00-122-6475INTERCHANGEABLE
CONTACT,ELECTRICAL
94257
5120-00-144-5207INTERCHANGEABLE
ADAPTER,SOCKET WRENCH
2810-00-148-4600INTERCHANGEABLE
STRAINER,OIL PUMP
143519
5120-00-224-9219INTERCHANGEABLE
ADAPTER,SOCKET WRENCH
86-002
5120-00-227-8088INTERCHANGEABLE
ADAPTER,SOCKET WRENCH
5120-00-227-8103INTERCHANGEABLE
ADAPTER,SOCKET WRENCH
5120-00-227-8104INTERCHANGEABLE
ADAPTER,SOCKET WRENCH
5120-00-240-8702INTERCHANGEABLE
ADAPTER,SOCKET WRENCH
5120-00-240-8703INTERCHANGEABLE
ADAPTER,SOCKET WRENCH
5120-00-243-1688INTERCHANGEABLE
ADAPTER,SOCKET WRENCH
A6
5310-00-264-1967INTERCHANGEABLE
WASHER,FLAT
A419X6

Frequently Asked Questions

What is NSN 5120-00-227-8095?

NSN 5120-00-227-8095 is a Adapter,socket Wrench, manufactured by Sears, Roebuck and Co. Dba Sears Div Sears Commercial, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-227-8095?

NSN 5120-00-227-8095 has 28 cross-referenced part numbers: 4257 (Sears, Roebuck and Co. Dba Sears Div Sears Commercial), B107.10 (The American Society of Mechanical Engineers), B107.10 TY2CL3STA (General Services Administration Federal Supply Service), 11-951 (Armstrong Bros Tool Co), B107.10M (The American Society of Mechanical Engineers) and 23 more.

What NSN replaces 5120-00-227-8095?

There are 12 known substitutes for 5120-00-227-8095: 5310-00-058-7986, 5999-00-122-6475, 5120-00-144-5207 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4257?

Key specifications for 4257: Outside Diameter: 0.688 INCHES MAXIMUM IN; Surface Treatment: CHROMIUM OVERALL; Drive End Shape: SQUARE SECOND END EXTERNAL; Material: STEEL OVERALL. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-227-8095 still in active supply?

NSN 5120-00-227-8095 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com