PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21756Socket,socket Wrench

Amron International Inc · NSN 5120-01-491-8915 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-491-8915 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-491-8915. Primary manufacturer part number: 21756.
Features
  • Socket,socket Wrench — FSC 5120
  • Drive Surface Size: 0.500 INCHES NOMINAL BOTH ENDS IN
  • 1 verified cross-reference
  • Primary manufacturer: Amron International Inc
Applications
  • Field maintenance and repair
  • Facility maintenance operations
  • General-purpose hand tools
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-01-491-8915, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Amron International Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN5120-01-491-8915
Primary Part Number21756
Item NameSocket,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerAmron International Inc
StatusACTIVE
Drive Surface Size0.500 INCHES NOMINAL BOTH ENDS IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
1680-00-110-2287PM21756 INTERCHANGEABLE
Housing,grip Assy
Mason Electric Co. Dba Mason Controls
5950-00-220-9950 INTERCHANGEABLE
Transformer,radio Frequency
5930-00-327-8472153214F1C INTERCHANGEABLE
Switch,rotary
Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch
5342-00-880-829721756 INTERCHANGEABLE
Hinge,peg
Norris Dispenser Company
5975-00-897-9959 INTERCHANGEABLE
Mounting
5110-01-489-5797 INTERCHANGEABLE
Cutter,boiler Tube
4820-01-517-0499 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Cross-Reference Index
Part NumberManufacturer
21756 PRIMARY Amron International Inc (USA)
Related Parts
1680-00-110-2287INTERCHANGEABLE
HOUSING,GRIP ASSY
PM21756
5950-00-220-9950INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
5930-00-327-8472INTERCHANGEABLE
SWITCH,ROTARY
153214F1C
5342-00-880-8297INTERCHANGEABLE
HINGE,PEG
21756
5975-00-897-9959INTERCHANGEABLE
MOUNTING
5110-01-489-5797INTERCHANGEABLE
CUTTER,BOILER TUBE
4820-01-517-0499INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE

Frequently Asked Questions

What is NSN 5120-01-491-8915?

NSN 5120-01-491-8915 is a Socket,socket Wrench, manufactured by Amron International Inc, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-491-8915?

NSN 5120-01-491-8915 has 1 cross-referenced part number: 21756 (Amron International Inc).

What NSN replaces 5120-01-491-8915?

There are 7 known substitutes for 5120-01-491-8915: 1680-00-110-2287, 5950-00-220-9950, 5930-00-327-8472 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21756?

Key specifications for 21756: Drive Surface Size: 0.500 INCHES NOMINAL BOTH ENDS IN; Part Name Assigned by Controlling Agency: SOCKET; 1/2 INCH SQUARE DRIVE IN. 2 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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