PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

00.520.0231Key,socket Head Screw

Heidelberg Usa Inc · NSN 5120-00-900-9344 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-900-9344 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-900-9344. Primary manufacturer part number: 00.520.0231.
Features
  • Key,socket Head Screw — FSC 5120
  • Material: STEEL OVERALL
  • Surface Treatment: OXIDE OR ZINC OVERALL
  • Short Arm Length: 26.0 MILLIMETERS MINIMUM AND 28.0 MILLIMETERS MAXIMUM MM
  • Specification/standard Data: 05047-ASME B18.3.2 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Wrenching Surface Shape: HEXAGON BOTH ENDS EXTERNAL
  • Features Provided: SHORT SERIES
  • Style Designator: L-HANDLE
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 5120-00-900-9344, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Heidelberg Usa Inc. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 12 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-00-900-9344
Primary Part Number00.520.0231
Item NameKey,socket Head Screw
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerHeidelberg Usa Inc
StatusCANCELLED
MaterialSTEEL OVERALL
Surface TreatmentOXIDE OR ZINC OVERALL
Short Arm Length26.0 MILLIMETERS MINIMUM AND 28.0 MILLIMETERS MAXIMUM MM
Specification/standard Data05047-ASME B18.3.2 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Wrenching Surface ShapeHEXAGON BOTH ENDS EXTERNAL
Features ProvidedSHORT SERIES
Style DesignatorL-HANDLE
Wrenching Surface Size5.0 MILLIMETERS NOMINAL BOTH ENDS MM
Long Arm Length65.0 MILLIMETERS MINIMUM AND 80.0 MILLIMETERS MAXIMUM MM
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
5365-00-399-526957126 INTERCHANGEABLE
Bushing,pump Head
Eaton Aerospace, Llc Dba Jackson South
5210-00-554-71345210-00-554-7134 INTERCHANGEABLE
Caliper Set,micrometer,outside
General Services Administration Federal Supply Service
5310-00-639-033668045 INTERCHANGEABLE
Washer,keyway
Textron Lycoming Inc Williamsport Plant
4810-00-963-177368-045 INTERCHANGEABLE
Parts Kit,solenoid Valve
Automatic Switch Company Dba Asco
2520-01-198-74085-7126 INTERCHANGEABLE
Spider and Bearing Assembly
Neapco Inc
6680-01-200-253168045 INTERCHANGEABLE
Transmitter,liquid Quantity
Setra Systems, Inc. Dba Gems Sensors
5340-01-205-891868045 INTERCHANGEABLE
Clamp
Frontgrade Technologies Inc.
5330-01-304-345068045 INTERCHANGEABLE
Seal,plain
Itw Food Equipment Group Llc Dba Hobart Service
5120-01-431-7071 INTERCHANGEABLE
Key,socket Head Screw
5210-01-619-981268045 INTERCHANGEABLE
Caliper Set,micrometer,outside
Hurco Mfg Co Inc
Cross-Reference Index
Part NumberManufacturer
00.520.0231 Heidelberg Usa Inc (USA)
5 X 80MM Mak Americas Inc (CAN)
68045 Allen Mfg Co Sub of Chicago Pneumatic Tool Co (USA)
57126 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
N5701 011 Rheinmetall Air Defence Ag (CHE)
5MM-ALLEN Seco Manufacturing Co, Inc (USA)
57126 Apex Tool Group, Llc Dba Nicholson (USA)
B18.3.2 The American Society of Mechanical Engineers (USA)
AWM5B Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
DIN911M5 Zelenda Machine and Tools Corp (USA)
529V0325 Bukh A/s (DNK)
529V0325 North Jersey Marine Enterprises Dba North Jersey Marine Enterprises Inc (USA)
Related Parts
5365-00-399-5269INTERCHANGEABLE
BUSHING,PUMP HEAD
57126
5210-00-554-7134INTERCHANGEABLE
CALIPER SET,MICROMETER,OUTSIDE
5210-00-554-7134
5310-00-639-0336INTERCHANGEABLE
WASHER,KEYWAY
68045
4810-00-963-1773INTERCHANGEABLE
PARTS KIT,SOLENOID VALVE
68-045
2520-01-198-7408INTERCHANGEABLE
SPIDER AND BEARING ASSEMBLY
5-7126
6680-01-200-2531INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
68045
5340-01-205-8918INTERCHANGEABLE
CLAMP
68045
5330-01-304-3450INTERCHANGEABLE
SEAL,PLAIN
68045
5120-01-431-7071INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5210-01-619-9812INTERCHANGEABLE
CALIPER SET,MICROMETER,OUTSIDE
68045

Frequently Asked Questions

What is NSN 5120-00-900-9344?

NSN 5120-00-900-9344 is a Key,socket Head Screw, manufactured by Heidelberg Usa Inc, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-900-9344?

NSN 5120-00-900-9344 has 12 cross-referenced part numbers: 00.520.0231 (Heidelberg Usa Inc), 5 X 80MM (Mak Americas Inc), 68045 (Allen Mfg Co Sub of Chicago Pneumatic Tool Co), 57126 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.), N5701 011 (Rheinmetall Air Defence Ag) and 7 more.

What NSN replaces 5120-00-900-9344?

There are 10 known substitutes for 5120-00-900-9344: 5365-00-399-5269, 5210-00-554-7134, 5310-00-639-0336 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 00.520.0231?

Key specifications for 00.520.0231: Material: STEEL OVERALL; Surface Treatment: OXIDE OR ZINC OVERALL; Short Arm Length: 26.0 MILLIMETERS MINIMUM AND 28.0 MILLIMETERS MAXIMUM MM; Specification/standard Data: 05047-ASME B18.3.2 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-900-9344 still in active supply?

NSN 5120-00-900-9344 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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