PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

31-052Wrench,open End

Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. · NSN 5120-00-277-1244 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-277-1244 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-277-1244. Primary manufacturer part number: 31-052.
Features
  • Wrench,open End — FSC 5120
  • Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM
  • Head Thickness: 0.875 INCHES MAXIMUM IN
  • Surface Treatment: ENAMEL AND CHROMIUM OVERALL
  • Style Designator: SINGLE HEAD
  • Wrenching Surface Shape: OVAL SINGLE END INTERNAL
  • Material: STEEL OVERALL
  • Wrenching Surface Size: 1.625 INCHES NOMINAL SINGLE END IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,open End, cataloged under National Stock Number 5120-00-277-1244, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-00-277-1244
Primary Part Number31-052
Item NameWrench,open End
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerEasco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.
StatusCANCELLED
Hardness Rating40.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM
Head Thickness0.875 INCHES MAXIMUM IN
Surface TreatmentENAMEL AND CHROMIUM OVERALL
Style DesignatorSINGLE HEAD
Wrenching Surface ShapeOVAL SINGLE END INTERNAL
MaterialSTEEL OVERALL
Wrenching Surface Size1.625 INCHES NOMINAL SINGLE END IN
Head Angle15.0 DEGREES NOMINAL
Torque Capacity14850.0 INCH-POUNDS MINIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
8040-00-092-281604001 INTERCHANGEABLE
Adhesive
Royal Holdings, Inc.
5331-00-185-0075905819-01 INTERCHANGEABLE
O-Ring
Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan
5120-00-223-1014 INTERCHANGEABLE
Punch,drive Pin
5950-00-677-0600 INTERCHANGEABLE
Transformer,power
5360-00-734-3279300440 INTERCHANGEABLE
Spring,helical,torsion
Sypris Electronics, Llc Div Sypris Electronics, Llc - Colorado Field Services
1630-00-887-32073-1052 INTERCHANGEABLE
Wheel,landing Gear
Goodrich Corporation Div Collins Aerospace, Landing Systems (wheels & Brakes)
4730-01-037-924131052 INTERCHANGEABLE
Nut,union
Gardner Denver Water Jetting Systems, Inc. Div Engineered Package Group
5305-01-503-9836310-52 INTERCHANGEABLE
Screw,machine
Crane Carrier Company, Llc
6110-01-699-2779300440 INTERCHANGEABLE
Distribution Box
Heil Trailer International Llc
Cross-Reference Index
Part NumberManufacturer
31-052 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
GGG-W-636 TY5 General Services Administration Federal Supply Service (USA)
31-052 Apex Tool Group, Llc Dba Nicholson (USA)
31-052 Armstrong Bros Tool Co (USA)
A-A-1357 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
710 Trw Inc Hand Tools Div Trw Industrial Products Group (USA)
10 Martin Sprocket and Gear Inc (USA)
GGG-W-636 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
TVA5120-2-263-025.1.1.39 Ministerie Van Defensie Clasmatlogco/afd Logistiek/sie Assmngt & Vrdbh (NLD)
6007026A U S Army Tank Automotive Command Amsta-Im-Mm (USA)
30-0440 Martin Sprocket and Gear Inc (USA)
Related Parts
8040-00-092-2816INTERCHANGEABLE
ADHESIVE
04001
5331-00-185-0075INTERCHANGEABLE
O-RING
905819-01
5120-00-223-1014INTERCHANGEABLE
PUNCH,DRIVE PIN
5950-00-677-0600INTERCHANGEABLE
TRANSFORMER,POWER
5360-00-734-3279INTERCHANGEABLE
SPRING,HELICAL,TORSION
300440
1630-00-887-3207INTERCHANGEABLE
WHEEL,LANDING GEAR
3-1052
4730-01-037-9241INTERCHANGEABLE
NUT,UNION
31052
5305-01-503-9836INTERCHANGEABLE
SCREW,MACHINE
310-52
6110-01-699-2779INTERCHANGEABLE
DISTRIBUTION BOX
300440

Frequently Asked Questions

What is NSN 5120-00-277-1244?

NSN 5120-00-277-1244 is a Wrench,open End, manufactured by Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc., classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-277-1244?

NSN 5120-00-277-1244 has 11 cross-referenced part numbers: 31-052 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.), GGG-W-636 TY5 (General Services Administration Federal Supply Service), 31-052 (Apex Tool Group, Llc Dba Nicholson), 31-052 (Armstrong Bros Tool Co), A-A-1357 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC) and 6 more.

What NSN replaces 5120-00-277-1244?

There are 9 known substitutes for 5120-00-277-1244: 8040-00-092-2816, 5331-00-185-0075, 5120-00-223-1014 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 31-052?

Key specifications for 31-052: Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM; Head Thickness: 0.875 INCHES MAXIMUM IN; Surface Treatment: ENAMEL AND CHROMIUM OVERALL; Style Designator: SINGLE HEAD. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-277-1244 still in active supply?

NSN 5120-00-277-1244 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