PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

GGG-K-275Key,socket Head Screw

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5120-00-198-5412 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-198-5412 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-198-5412. Primary manufacturer part number: GGG-K-275.
Features
  • Key,socket Head Screw — FSC 5120
  • Short Arm Length: 0.656 INCHES MINIMUM AND 0.844 INCHES MAXIMUM IN
  • Nondefinitive Spec/std Data: 1 TYPE AND 2 CLASS
  • Material: STEEL OVERALL
  • Wrenching Surface Shape: HEXAGON BOTH ENDS EXTERNAL
  • Wrenching Surface Size: 0.125 INCHES NOMINAL BOTH ENDS IN
  • Features Provided: LONG SERIES
  • Long Arm Length: 3.656 INCHES MINIMUM AND 3.844 INCHES MAXIMUM IN
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 5120-00-198-5412, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Federal Specifications Promulgated by General Services Administration Washington DC. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-00-198-5412
Primary Part NumberGGG-K-275
Item NameKey,socket Head Screw
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusCANCELLED
Short Arm Length0.656 INCHES MINIMUM AND 0.844 INCHES MAXIMUM IN
Nondefinitive Spec/std Data1 TYPE AND 2 CLASS
MaterialSTEEL OVERALL
Wrenching Surface ShapeHEXAGON BOTH ENDS EXTERNAL
Wrenching Surface Size0.125 INCHES NOMINAL BOTH ENDS IN
Features ProvidedLONG SERIES
Long Arm Length3.656 INCHES MINIMUM AND 3.844 INCHES MAXIMUM IN
Style DesignatorL-HANDLE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3020-00-004-816170007 INTERCHANGEABLE
Gear,spur
Cummins Inc.
6115-00-133-9101MEP007A INTERCHANGEABLE
Generator Set,diesel Engine
Department of Defense Project Manager-Mobile Electric Power
5342-00-162-095458006 INTERCHANGEABLE
Latch,towbar
Aerol Llc
5330-00-480-3864600-121-0007 INTERCHANGEABLE
Gasket
Burke Industries Purosil Div
5940-00-614-0537 INTERCHANGEABLE
Terminal,lug
3030-00-902-6689 INTERCHANGEABLE
Belt,positive Drive
5133-01-046-8863 INTERCHANGEABLE
Drill,twist
5945-01-077-2983 INTERCHANGEABLE
Flasher,circuit
4820-01-085-9231MA207-21722 INTERCHANGEABLE
Valve,linear,directional Control
Am General Llc
4010-01-096-3540CL-22-KA-800 INTERCHANGEABLE
Lanyard
Carr Lane Manufacturing Co
Cross-Reference Index
Part NumberManufacturer
GGG-K-275 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
58006 Apex Tool Group, Llc Dba Nicholson (USA)
AWL4 Sna Germany Gmbh (DEU)
AWL4 Jan Hermanek (CZE)
58006 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
A-A-2473 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
GGG-K-275 TY1CL2 General Services Administration Federal Supply Service (USA)
70007 Allen Mfg Co Sub of Chicago Pneumatic Tool Co (USA)
Related Parts
3020-00-004-8161INTERCHANGEABLE
GEAR,SPUR
70007
6115-00-133-9101INTERCHANGEABLE
GENERATOR SET,DIESEL ENGINE
MEP007A
5342-00-162-0954INTERCHANGEABLE
LATCH,TOWBAR
58006
5330-00-480-3864INTERCHANGEABLE
GASKET
600-121-0007
5940-00-614-0537INTERCHANGEABLE
TERMINAL,LUG
3030-00-902-6689INTERCHANGEABLE
BELT,POSITIVE DRIVE
5133-01-046-8863INTERCHANGEABLE
DRILL,TWIST
5945-01-077-2983INTERCHANGEABLE
FLASHER,CIRCUIT
4820-01-085-9231INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
MA207-21722
4010-01-096-3540INTERCHANGEABLE
LANYARD
CL-22-KA-800
5970-01-109-2855INTERCHANGEABLE
INSULATOR
4820-01-132-0670INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
70007

Frequently Asked Questions

What is NSN 5120-00-198-5412?

NSN 5120-00-198-5412 is a Key,socket Head Screw, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-198-5412?

NSN 5120-00-198-5412 has 8 cross-referenced part numbers: GGG-K-275 (Federal Specifications Promulgated by General Services Administration Washington DC), 58006 (Apex Tool Group, Llc Dba Nicholson), AWL4 (Sna Germany Gmbh), AWL4 (Jan Hermanek), 58006 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.) and 3 more.

What NSN replaces 5120-00-198-5412?

There are 12 known substitutes for 5120-00-198-5412: 3020-00-004-8161, 6115-00-133-9101, 5342-00-162-0954 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of GGG-K-275?

Key specifications for GGG-K-275: Short Arm Length: 0.656 INCHES MINIMUM AND 0.844 INCHES MAXIMUM IN; Nondefinitive Spec/std Data: 1 TYPE AND 2 CLASS; Material: STEEL OVERALL; Wrenching Surface Shape: HEXAGON BOTH ENDS EXTERNAL. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-198-5412 still in active supply?

NSN 5120-00-198-5412 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.
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