PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25611Key Set,socket Head Screw

Eklind Tool Co · NSN 5120-01-660-8739 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-660-8739 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-660-8739. Primary manufacturer part number: 25611.
Features
  • Key Set,socket Head Screw — FSC 5120
  • Key Characteristic: CONTAINS HEX KEYS SIZE 5/32, 3/16, 7/32, 1/4, 5/16 AND 3/8 IN. IN
  • Material: STEEL
  • Surface Treatment: OXIDE
  • Handle Type: STRAIGHT
  • Features Provided: FOLD-UP TYPE
  • Key Quantity: 6
  • Specification/standard Data: 05047-ASME B18.3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
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 5120-01-660-8739, 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 7 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-660-8739
Primary Part Number25611
Item NameKey Set,socket Head Screw
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerEklind Tool Co
StatusACTIVE
Key CharacteristicCONTAINS HEX KEYS SIZE 5/32, 3/16, 7/32, 1/4, 5/16 AND 3/8 IN. IN
MaterialSTEEL
Surface TreatmentOXIDE
Handle TypeSTRAIGHT
Features ProvidedFOLD-UP TYPE
Key Quantity6
Specification/standard Data05047-ASME B18.3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
3040-00-136-1316632-0044-001 INTERCHANGEABLE
Shaft,straight
Acron Aviation, Inc.
5915-00-201-7090 INTERCHANGEABLE
Filter,low Pass
5133-00-233-6455 INTERCHANGEABLE
Drill,twist
1440-00-921-66249194068-26 INTERCHANGEABLE
Seat,regulator
Us Army Aviation and Missile Command
5210-01-015-732625-611J INTERCHANGEABLE
Indicator,dial
L.s. Starrett Company (the) Div Tool Division
3020-01-329-1938 INTERCHANGEABLE
Gear,spur
6940-01-681-409025611 INTERCHANGEABLE
Access Node Trainer
Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector
Cross-Reference Index
Part NumberManufacturer
B18.3 The American Society of Mechanical Engineers (USA)
25611 PRIMARY Eklind Tool Co (USA)
Related Parts
3040-00-136-1316INTERCHANGEABLE
SHAFT,STRAIGHT
632-0044-001
5915-00-201-7090INTERCHANGEABLE
FILTER,LOW PASS
5133-00-233-6455INTERCHANGEABLE
DRILL,TWIST
1440-00-921-6624INTERCHANGEABLE
SEAT,REGULATOR
9194068-26
5210-01-015-7326INTERCHANGEABLE
INDICATOR,DIAL
25-611J
3020-01-329-1938INTERCHANGEABLE
GEAR,SPUR
6940-01-681-4090INTERCHANGEABLE
ACCESS NODE TRAINER
25611

Frequently Asked Questions

What is NSN 5120-01-660-8739?

NSN 5120-01-660-8739 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 5120-01-660-8739?

NSN 5120-01-660-8739 has 2 cross-referenced part numbers: B18.3 (The American Society of Mechanical Engineers), 25611 (Eklind Tool Co).

What NSN replaces 5120-01-660-8739?

There are 7 known substitutes for 5120-01-660-8739: 3040-00-136-1316, 5915-00-201-7090, 5133-00-233-6455 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 25611?

Key specifications for 25611: Key Characteristic: CONTAINS HEX KEYS SIZE 5/32, 3/16, 7/32, 1/4, 5/16 AND 3/8 IN. IN; Material: STEEL; Surface Treatment: OXIDE; Special Features: PLASTIC HANDLE. 8 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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