PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

57028Key,socket Head Screw

Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. · NSN 5120-01-335-2093 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-335-2093 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-335-2093. Primary manufacturer part number: 57028.
Features
  • Key,socket Head Screw — FSC 5120
  • Specification/standard Data: 05047-ASME B18.3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Features Provided: SHORT SERIES
  • Wrenching Surface Shape: HEXAGON BOTH ENDS EXTERNAL
  • Short Arm Length: 1.250 INCHES NOMINAL IN
  • Surface Treatment: OXIDE OVERALL
  • Long Arm Length: 3.750 INCHES NOMINAL IN
  • Material: STEEL OVERALL
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 5120-01-335-2093, 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 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-335-2093
Primary Part Number57028
Item NameKey,socket Head Screw
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerEasco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.
StatusACTIVE
Specification/standard Data05047-ASME B18.3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Features ProvidedSHORT SERIES
Wrenching Surface ShapeHEXAGON BOTH ENDS EXTERNAL
Short Arm Length1.250 INCHES NOMINAL IN
Surface TreatmentOXIDE OVERALL
Long Arm Length3.750 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Style DesignatorL-HANDLE
Wrenching Surface Size0.313 INCHES NOMINAL BOTH ENDS IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
1630-00-180-512657028 INTERCHANGEABLE
Spider Assembly,duo-Servo
Serval Aviation Inc
1280-00-698-8337 INTERCHANGEABLE
Plate Assy,rate and
1420-00-981-9428 INTERCHANGEABLE
Latch Plate Assembly
5120-01-162-031957028 INTERCHANGEABLE
Key,socket Head Screw
H-K Connecticut Holding Company
3010-01-350-91515701310 INTERCHANGEABLE
Insert,flexible Coupling
Leroi International Inc Dba Compair Leroi
Cross-Reference Index
Part NumberManufacturer
57028 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
57028 Apex Tool Group, Llc Dba Nicholson (USA)
B18.3 The American Society of Mechanical Engineers (USA)
Related Parts
1630-00-180-5126INTERCHANGEABLE
SPIDER ASSEMBLY,DUO-SERVO
57028
1280-00-698-8337INTERCHANGEABLE
PLATE ASSY,RATE AND
1420-00-981-9428INTERCHANGEABLE
LATCH PLATE ASSEMBLY
5120-01-162-0319INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
57028
3010-01-350-9151INTERCHANGEABLE
INSERT,FLEXIBLE COUPLING
5701310

Frequently Asked Questions

What is NSN 5120-01-335-2093?

NSN 5120-01-335-2093 is a Key,socket Head Screw, 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: active.

What are the part numbers for NSN 5120-01-335-2093?

NSN 5120-01-335-2093 has 3 cross-referenced part numbers: 57028 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.), 57028 (Apex Tool Group, Llc Dba Nicholson), B18.3 (The American Society of Mechanical Engineers).

What NSN replaces 5120-01-335-2093?

There are 5 known substitutes for 5120-01-335-2093: 1630-00-180-5126, 1280-00-698-8337, 1420-00-981-9428 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 57028?

Key specifications for 57028: Specification/standard Data: 05047-ASME B18.3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD; Features Provided: SHORT SERIES; Wrenching Surface Shape: HEXAGON BOTH ENDS EXTERNAL; Short Arm Length: 1.250 INCHES NOMINAL IN. 9 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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