PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

57126Key,socket Head Screw

Easco Hand Tools Inc · NSN 5120-01-431-7071 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-431-7071 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-431-7071. Primary manufacturer part number: 57126.
Features
  • Key,socket Head Screw — FSC 5120
  • Wrenching Surface Size: 5.0 MILLIMETERS NOMINAL BOTH ENDS MM
  • Material: STEEL OVERALL
  • Surface Treatment: OXIDE OVERALL
  • Style Designator: L-HANDLE
  • Wrenching Surface Shape: HEXAGON BOTH ENDS EXTERNAL
  • Features Provided: SHORT SERIES
  • 2 verified cross-references
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Key,socket Head Screw, cataloged under National Stock Number 5120-01-431-7071, 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. Government technical data includes 6 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-431-7071
Primary Part Number57126
Item NameKey,socket Head Screw
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerEasco Hand Tools Inc
StatusACTIVE
Wrenching Surface Size5.0 MILLIMETERS NOMINAL BOTH ENDS MM
MaterialSTEEL OVERALL
Surface TreatmentOXIDE OVERALL
Style DesignatorL-HANDLE
Wrenching Surface ShapeHEXAGON BOTH ENDS EXTERNAL
Features ProvidedSHORT SERIES
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5365-00-399-526957126 INTERCHANGEABLE
Bushing,pump Head
Eaton Aerospace, Llc Dba Jackson South
5120-00-900-9344 INTERCHANGEABLE
Key,socket Head Screw
2520-01-198-74085-7126 INTERCHANGEABLE
Spider and Bearing Assembly
Neapco Inc
Cross-Reference Index
Part NumberManufacturer
57126 Easco Hand Tools Inc (USA)
57126 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
Related Parts
5365-00-399-5269INTERCHANGEABLE
BUSHING,PUMP HEAD
57126
5120-00-900-9344INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
2520-01-198-7408INTERCHANGEABLE
SPIDER AND BEARING ASSEMBLY
5-7126

Frequently Asked Questions

What is NSN 5120-01-431-7071?

NSN 5120-01-431-7071 is a Key,socket Head Screw, manufactured by Easco Hand Tools Inc, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-431-7071?

NSN 5120-01-431-7071 has 2 cross-referenced part numbers: 57126 (Easco Hand Tools Inc), 57126 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.).

What NSN replaces 5120-01-431-7071?

There are 3 known substitutes for 5120-01-431-7071: 5365-00-399-5269, 5120-00-900-9344, 2520-01-198-7408. Verify interchangeability with system specifications before substitution.

What are the specifications of 57126?

Key specifications for 57126: Wrenching Surface Size: 5.0 MILLIMETERS NOMINAL BOTH ENDS MM; Material: STEEL OVERALL; Surface Treatment: OXIDE OVERALL; Style Designator: L-HANDLE. 6 total characteristics are documented in the Federal Logistics Information System.

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