PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

37-204Socket,socket Wrench

Apex Tool Group, Llc · NSN 5120-01-677-5419 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-677-5419 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-677-5419. Primary manufacturer part number: 37-204.
Features
  • Socket,socket Wrench — FSC 5120
  • Wrenching End Opening Depth: 0.189 INCHES NOMINAL IN
  • Wrenching End Outside Diameter: 0.276 INCHES NOMINAL IN
  • Drive End Outside Diameter: 0.449 INCHES NOMINAL IN
  • 1 verified cross-reference
  • Primary manufacturer: Apex Tool Group, Llc
Applications
  • Field maintenance and repair
  • Facility maintenance operations
  • General-purpose hand tools
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-01-677-5419, 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. Government technical data includes 3 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-677-5419
Primary Part Number37-204
Item NameSocket,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerApex Tool Group, Llc
StatusACTIVE
Wrenching End Opening Depth0.189 INCHES NOMINAL IN
Wrenching End Outside Diameter0.276 INCHES NOMINAL IN
Drive End Outside Diameter0.449 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5331-01-371-76053720400 INTERCHANGEABLE
O-Ring
Alfa Laval Inc
6060-01-398-8207 INTERCHANGEABLE
Splicer,fiber Optics Conductor
6520-01-557-1194823-812 INTERCHANGEABLE
Shaft Assembly,plunger,heat Carr
Young Ps Acquisitions, Llc Div Plak Smacker
Cross-Reference Index
Part NumberManufacturer
37-204 PRIMARY Apex Tool Group, Llc (USA)
Related Parts
5331-01-371-7605INTERCHANGEABLE
O-RING
3720400
6060-01-398-8207INTERCHANGEABLE
SPLICER,FIBER OPTICS CONDUCTOR
6520-01-557-1194INTERCHANGEABLE
SHAFT ASSEMBLY,PLUNGER,HEAT CARR
823-812

Frequently Asked Questions

What is NSN 5120-01-677-5419?

NSN 5120-01-677-5419 is a Socket,socket Wrench, manufactured by Apex Tool Group, Llc, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-677-5419?

NSN 5120-01-677-5419 has 1 cross-referenced part number: 37-204 (Apex Tool Group, Llc).

What NSN replaces 5120-01-677-5419?

There are 3 known substitutes for 5120-01-677-5419: 5331-01-371-7605, 6060-01-398-8207, 6520-01-557-1194. Verify interchangeability with system specifications before substitution.

What are the specifications of 37-204?

Key specifications for 37-204: Wrenching End Opening Depth: 0.189 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: 1/4 INCH DRIVE 6 POINT DEEP SOCKET 4MM MM; Overall Length: 2.00 INCHES NOMINAL IN; Special Features: DRIVE TANG SIZE 1/4 INCH. FASTENER SIZE 4MM. DRIVE TYPE 6 POINT. MM. 6 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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