PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25181Key Set,socket Head Screw

Eklind Tool Co · NSN 5120-01-660-5228 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-660-5228 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-660-5228. Primary manufacturer part number: 25181.
Features
  • Key Set,socket Head Screw — FSC 5120
  • Key Quantity: 8
  • Material: STEEL
  • Surface Treatment: OXIDE
  • Key Characteristic: CONTAINS HEX KEYS SIZE 2, 2.5, 3, 4, 5, 6, 7 AND 8MM MM
  • Features Provided: FOLD-UP TYPE
  • Specification/standard Data: 05047-ASME B18.3.2M PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • 2 verified cross-references
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel construction
General Description

The Key Set,socket Head Screw, cataloged under National Stock Number 5120-01-660-5228, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Eklind Tool Co. 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-660-5228
Primary Part Number25181
Item NameKey Set,socket Head Screw
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerEklind Tool Co
StatusACTIVE
Key Quantity8
MaterialSTEEL
Surface TreatmentOXIDE
Key CharacteristicCONTAINS HEX KEYS SIZE 2, 2.5, 3, 4, 5, 6, 7 AND 8MM MM
Features ProvidedFOLD-UP TYPE
Specification/standard Data05047-ASME B18.3.2M PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3110-00-156-3575207KLDFS381A INTERCHANGEABLE
Bearing,ball,annular
Timken Co Div the Timken Company
5133-00-228-1366 INTERCHANGEABLE
Drill,twist
5365-01-012-932425181 INTERCHANGEABLE
Shim
Williams International Co., L.l.c.
5365-01-495-54713088A125 INTERCHANGEABLE
Shim
Mcmaster-Carr Supply Co
Cross-Reference Index
Part NumberManufacturer
B18.3.2M The American Society of Mechanical Engineers (USA)
25181 PRIMARY Eklind Tool Co (USA)
Related Parts
3110-00-156-3575INTERCHANGEABLE
BEARING,BALL,ANNULAR
207KLDFS381A
5133-00-228-1366INTERCHANGEABLE
DRILL,TWIST
5365-01-012-9324INTERCHANGEABLE
SHIM
25181
5365-01-495-5471INTERCHANGEABLE
SHIM
3088A125

Frequently Asked Questions

What is NSN 5120-01-660-5228?

NSN 5120-01-660-5228 is a Key Set,socket Head Screw, manufactured by Eklind Tool Co, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-660-5228?

NSN 5120-01-660-5228 has 2 cross-referenced part numbers: B18.3.2M (The American Society of Mechanical Engineers), 25181 (Eklind Tool Co).

What NSN replaces 5120-01-660-5228?

There are 4 known substitutes for 5120-01-660-5228: 3110-00-156-3575, 5133-00-228-1366, 5365-01-012-9324 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 25181?

Key specifications for 25181: Key Quantity: 8; Material: STEEL; Surface Treatment: OXIDE; Key Characteristic: CONTAINS HEX KEYS SIZE 2, 2.5, 3, 4, 5, 6, 7 AND 8MM MM. 7 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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