PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4538Extension Set,socket Wrench

S K Hand Tool Corp · NSN 5120-01-572-1344 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-572-1344 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-572-1344. Primary manufacturer part number: 4538.
Features
  • Extension Set,socket Wrench — FSC 5120
  • Furnished Items: PLASTIC TRAY
  • Component Quantity: 8
  • Nonsupply Items and Quantities: CONTAINS 1 EA CHROME PLATED; 3/8 IN. FEMALE SQ DRIVE EXTENSIONS SIZE 1.5, 3, 4, 6, 8, 10, 18 AND 24 IN. IN
  • 1 verified cross-reference
  • Primary manufacturer: S K Hand Tool Corp
Applications
  • Field maintenance and repair
  • Facility maintenance operations
  • General-purpose hand tools
General Description

The Extension Set,socket Wrench, cataloged under National Stock Number 5120-01-572-1344, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is S K Hand Tool Corp. 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-572-1344
Primary Part Number4538
Item NameExtension Set,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerS K Hand Tool Corp
StatusACTIVE
Furnished ItemsPLASTIC TRAY
Component Quantity8
Nonsupply Items and QuantitiesCONTAINS 1 EA CHROME PLATED; 3/8 IN. FEMALE SQ DRIVE EXTENSIONS SIZE 1.5, 3, 4, 6, 8, 10, 18 AND 24 IN. IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
3030-00-102-308723-3-13IN INTERCHANGEABLE
Belt,v
H20 Tank Inc U S Motors Div
5950-00-231-4828467738CHANGEB INTERCHANGEABLE
Transformer,audio Frequency
Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)
4730-00-253-4414 INTERCHANGEABLE
Elbow,pipe
5340-00-721-51969026325 INTERCHANGEABLE
Bumper
Us Army Aviation and Missile Command
5365-01-087-69004538 INTERCHANGEABLE
Shim
Honeywell International Inc. Dba Honeywell Div Aerospace -Olathe Hums Div
6625-01-331-639063A141584P4 INTERCHANGEABLE
Converter,wave Form
Lockheed Martin Corporation Div Rotary and Mission Systems
5975-01-339-74694538 INTERCHANGEABLE
Mounting Base,electrical Equipme
Hollingsead International, Llc
5962-01-496-2665310-0189 INTERCHANGEABLE
Microcircuit,linear
Cyberchron Corporation
Cross-Reference Index
Part NumberManufacturer
4538 PRIMARY S K Hand Tool Corp (USA)
Related Parts
3030-00-102-3087INTERCHANGEABLE
BELT,V
23-3-13IN
5950-00-231-4828INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
467738CHANGEB
4730-00-253-4414INTERCHANGEABLE
ELBOW,PIPE
5340-00-721-5196INTERCHANGEABLE
BUMPER
9026325
5365-01-087-6900INTERCHANGEABLE
SHIM
4538
6625-01-331-6390INTERCHANGEABLE
CONVERTER,WAVE FORM
63A141584P4
5975-01-339-7469INTERCHANGEABLE
MOUNTING BASE,ELECTRICAL EQUIPME
4538
5962-01-496-2665INTERCHANGEABLE
MICROCIRCUIT,LINEAR
310-0189

Frequently Asked Questions

What is NSN 5120-01-572-1344?

NSN 5120-01-572-1344 is a Extension Set,socket Wrench, manufactured by S K Hand Tool Corp, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-572-1344?

NSN 5120-01-572-1344 has 1 cross-referenced part number: 4538 (S K Hand Tool Corp).

What NSN replaces 5120-01-572-1344?

There are 8 known substitutes for 5120-01-572-1344: 3030-00-102-3087, 5950-00-231-4828, 4730-00-253-4414 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4538?

Key specifications for 4538: Furnished Items: PLASTIC TRAY; Component Quantity: 8; Nonsupply Items and Quantities: CONTAINS 1 EA CHROME PLATED; 3/8 IN. FEMALE SQ DRIVE EXTENSIONS SIZE 1.5, 3, 4, 6, 8, 10, 18 AND 24 IN. IN. 3 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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