PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11-408Socket,socket Wrench

Apex Tool Group, Llc Dba Nicholson · NSN 5120-01-654-1878 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-654-1878 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-654-1878. Primary manufacturer part number: 11-408.
Features
  • Socket,socket Wrench — FSC 5120
  • Drive End Outside Diameter: 0.658 INCHES NOMINAL IN
  • Wrenching End Opening Depth: 0.179 INCHES NOMINAL IN
  • Wrenching End Outside Diameter: 0.458 INCHES NOMINAL IN
  • Wrenching Surface Shape: 8 POINT SINGLE END INTERNAL
  • Surface Treatment: CHROMIUM OVERALL
  • Wrenching Surface Size: 0.250 INCHES NOMINAL SINGLE END IN
  • Material: STEEL OVERALL
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-01-654-1878, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Apex Tool Group, Llc Dba Nicholson. Government technical data includes 11 verified specifications, 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-654-1878
Primary Part Number11-408
Item NameSocket,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerApex Tool Group, Llc Dba Nicholson
StatusACTIVE
Drive End Outside Diameter0.658 INCHES NOMINAL IN
Wrenching End Opening Depth0.179 INCHES NOMINAL IN
Wrenching End Outside Diameter0.458 INCHES NOMINAL IN
Wrenching Surface Shape8 POINT SINGLE END INTERNAL
Surface TreatmentCHROMIUM OVERALL
Wrenching Surface Size0.250 INCHES NOMINAL SINGLE END IN
MaterialSTEEL OVERALL
Drive End ShapeSQUARE SINGLE END INTERNAL
Drive Surface Size0.375 INCHES NOMINAL SINGLE END IN
Features ProvidedMANUAL TOOL
Style DesignatorINTERNAL-INTERNAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
3120-00-329-383111408 INTERCHANGEABLE
Bearing,sleeve
Fairbanks Inc Fairbanks Scale Div
6625-00-670-0173SMB145605 INTERCHANGEABLE
Probe Subassembly
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
2805-00-834-527911-408 INTERCHANGEABLE
Ring Set,piston
Thermo King Corporation Dba Phoenix Global Distirbution.
9540-01-071-0128 INTERCHANGEABLE
Beam,structural
9540-01-071-1355 INTERCHANGEABLE
Beam,structural
9540-01-071-2152 INTERCHANGEABLE
Beam,structural
5330-01-145-6089 INTERCHANGEABLE
Gasket
5305-01-420-880111408 INTERCHANGEABLE
Screw,machine
Munters Corporation Dba Munters Des Champs Products Div Cargocaire
1240-01-551-573411408 INTERCHANGEABLE
Sight,reflex
Aimpoint Inc Dba Aimpoint Inc
Cross-Reference Index
Part NumberManufacturer
11-408 Apex Tool Group, Llc Dba Nicholson (USA)
Related Parts
3120-00-329-3831INTERCHANGEABLE
BEARING,SLEEVE
11408
6625-00-670-0173INTERCHANGEABLE
PROBE SUBASSEMBLY
SMB145605
2805-00-834-5279INTERCHANGEABLE
RING SET,PISTON
11-408
9540-01-071-0128INTERCHANGEABLE
BEAM,STRUCTURAL
9540-01-071-1355INTERCHANGEABLE
BEAM,STRUCTURAL
9540-01-071-2152INTERCHANGEABLE
BEAM,STRUCTURAL
5330-01-145-6089INTERCHANGEABLE
GASKET
5305-01-420-8801INTERCHANGEABLE
SCREW,MACHINE
11408
1240-01-551-5734INTERCHANGEABLE
SIGHT,REFLEX
11408

Frequently Asked Questions

What is NSN 5120-01-654-1878?

NSN 5120-01-654-1878 is a Socket,socket Wrench, manufactured by Apex Tool Group, Llc Dba Nicholson, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-654-1878?

NSN 5120-01-654-1878 has 1 cross-referenced part number: 11-408 (Apex Tool Group, Llc Dba Nicholson).

What NSN replaces 5120-01-654-1878?

There are 9 known substitutes for 5120-01-654-1878: 3120-00-329-3831, 6625-00-670-0173, 2805-00-834-5279 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11-408?

Key specifications for 11-408: Drive End Outside Diameter: 0.658 INCHES NOMINAL IN; Wrenching End Opening Depth: 0.179 INCHES NOMINAL IN; Wrenching End Outside Diameter: 0.458 INCHES NOMINAL IN; Overall Length: 0.938 INCHES NOMINAL IN. 12 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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