PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

27-394Wrench,box

Apex Tool Group, Llc Dba Nicholson · NSN 5120-01-654-1728 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-654-1728 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-654-1728. Primary manufacturer part number: 27-394.
Features
  • Wrench,box — FSC 5120
  • Small End Head Thickness: 0.437 INCHES NOMINAL IN
  • Large End Head Thickness: 0.406 INCHES NOMINAL IN
  • Small End Outside Diameter: 1.000 INCHES NOMINAL IN
  • Large End Outside Diameter: 0.906 INCHES NOMINAL IN
  • Wrenching Surface Size: 0.6250 INCHES NOMINAL FIRST END IN
  • Wrenching End Offset Angle: 45.0 DEGREES NOMINAL
  • Material: STEEL OVERALL
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,box, cataloged under National Stock Number 5120-01-654-1728, 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 10 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-654-1728
Primary Part Number27-394
Item NameWrench,box
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerApex Tool Group, Llc Dba Nicholson
StatusACTIVE
Small End Head Thickness0.437 INCHES NOMINAL IN
Large End Head Thickness0.406 INCHES NOMINAL IN
Small End Outside Diameter1.000 INCHES NOMINAL IN
Large End Outside Diameter0.906 INCHES NOMINAL IN
Wrenching Surface Size0.6250 INCHES NOMINAL FIRST END IN
Wrenching End Offset Angle45.0 DEGREES NOMINAL
MaterialSTEEL OVERALL
Wrenching Surface Shape12 POINT BOTH ENDS INTERNAL
Style DesignatorDEEP ANGULAR OFFSET DOUBLE HEAD
Wrenching Surface Size0.6875 INCHES NOMINAL SECOND END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5330-00-717-116462050 INTERCHANGEABLE
Seal,plain Encased
Dana Automotive Systems Group, Llc Dba Dana Sealing Products
5325-01-188-511927394 INTERCHANGEABLE
Insert,screw Thread
Moog Inc. Dba Ampac-Isp Corp
6130-01-600-076382009 INTERCHANGEABLE
Adapter,power Supply
R.g. Enterprises (u.s.a.), Inc. Dba Rg Enterprises Inc
5342-01-620-479227394 INTERCHANGEABLE
Mount,resilient,weapon System
Charles Reed Knight Jr Dba Knight's Armament Company
Cross-Reference Index
Part NumberManufacturer
27-394 Apex Tool Group, Llc Dba Nicholson (USA)
Related Parts
5330-00-717-1164INTERCHANGEABLE
SEAL,PLAIN ENCASED
62050
5325-01-188-5119INTERCHANGEABLE
INSERT,SCREW THREAD
27394
6130-01-600-0763INTERCHANGEABLE
ADAPTER,POWER SUPPLY
82009
5342-01-620-4792INTERCHANGEABLE
MOUNT,RESILIENT,WEAPON SYSTEM
27394

Frequently Asked Questions

What is NSN 5120-01-654-1728?

NSN 5120-01-654-1728 is a Wrench,box, 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 5120-01-654-1728?

NSN 5120-01-654-1728 has 1 cross-referenced part number: 27-394 (Apex Tool Group, Llc Dba Nicholson).

What NSN replaces 5120-01-654-1728?

There are 4 known substitutes for 5120-01-654-1728: 5330-00-717-1164, 5325-01-188-5119, 6130-01-600-0763 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 27-394?

Key specifications for 27-394: Small End Head Thickness: 0.437 INCHES NOMINAL IN; Large End Head Thickness: 0.406 INCHES NOMINAL IN; Small End Outside Diameter: 1.000 INCHES NOMINAL IN; Large End Outside Diameter: 0.906 INCHES NOMINAL IN. 11 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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