PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

41701Countershaft and Gear

Spalla Inc · NSN 2520-00-393-3221 · FSC 2520 · No Item Name Available
Verified by PartsTable
NSN 2520-00-393-3221 — this item is cataloged by the U.S. Government under National Stock Number 2520-00-393-3221. Primary manufacturer part number: 41701.
Features
  • Countershaft and Gear — FSC 2520
  • General Characteristics Item Description: 18.375 IN. O/A LG,DIAMETERS OF STEPS VARY FROM 1.497 IN. TO 4.420 IN. IN
  • 9 verified cross-references
  • Primary manufacturer: Spalla Inc
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
General Description

The Countershaft and Gear, cataloged under National Stock Number 2520-00-393-3221, is classified within Federal Supply Class 2520 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Spalla Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2520-00-393-3221
Primary Part Number41701
Item NameCountershaft and Gear
FSC / FSG2520 / 25 — No Item Name Available
ManufacturerSpalla Inc
StatusACTIVE
General Characteristics Item Description18.375 IN. O/A LG,DIAMETERS OF STEPS VARY FROM 1.497 IN. TO 4.420 IN. IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5306-00-097-89545234 INTERCHANGEABLE
Bolt,internal Wrenching
Eaton Aerospace, Llc Dba Jackson South
5950-00-193-866220800-10 INTERCHANGEABLE
Transformer,power
Hickok Waekon Llc
4730-00-223-640807002 INTERCHANGEABLE
Cup,grease
Gits Mfg Co Inc
5940-00-230-0515MS25036-154 INTERCHANGEABLE
Terminal,lug
Sae International Dba Sae International
5330-00-231-5184C60-802649 INTERCHANGEABLE
Seal Assembly,shaft
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
5305-00-338-197941701 INTERCHANGEABLE
Screw,shoulder
Jergens Inc Div Tooling Components Division
3020-00-353-2660KIT2519 INTERCHANGEABLE
Gear,bevel
Meritor Industrial Products, Llc
2840-00-407-91674170-1 INTERCHANGEABLE
Chain Assy,safety
Wisco Products Inc
5975-00-578-9364 INTERCHANGEABLE
Box Connector,electrical
4320-00-659-89425234-010 INTERCHANGEABLE
Pump,hydraulic Ram,hand Driven
Columbus Jack Corporation Div Columbus Jack
Cross-Reference Index
Part NumberManufacturer
41701 Spalla Inc (USA)
P26916 Koehring Co Lorain Div (USA)
5234 Koehring Co Lorain Div (USA)
5234 Eaton Corp Transmission Div (USA)
41701 General Motors Llc Dba General Motors Llc (USA)
41701 General Motors Corp (USA)
P26916 Koehring Cranes and Excavators Inc Sub of Northwest Engineering Co (USA)
5234 Koehring Cranes and Excavators Inc Sub of Northwest Engineering Co (USA)
41701 Terex Corp (USA)
Related Parts
5306-00-097-8954INTERCHANGEABLE
BOLT,INTERNAL WRENCHING
5234
5950-00-193-8662INTERCHANGEABLE
TRANSFORMER,POWER
20800-10
4730-00-223-6408INTERCHANGEABLE
CUP,GREASE
07002
5940-00-230-0515INTERCHANGEABLE
TERMINAL,LUG
MS25036-154
5330-00-231-5184INTERCHANGEABLE
SEAL ASSEMBLY,SHAFT
C60-802649
5305-00-338-1979INTERCHANGEABLE
SCREW,SHOULDER
41701
3020-00-353-2660INTERCHANGEABLE
GEAR,BEVEL
KIT2519
2840-00-407-9167INTERCHANGEABLE
CHAIN ASSY,SAFETY
4170-1
5975-00-578-9364INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
4320-00-659-8942INTERCHANGEABLE
PUMP,HYDRAULIC RAM,HAND DRIVEN
5234-010
4130-00-837-6697INTERCHANGEABLE
VALVE,SAFETY
4520-01-018-8223INTERCHANGEABLE
COLLAR,AIR CONDITIONING-HEATING
714723

Frequently Asked Questions

What is NSN 2520-00-393-3221?

NSN 2520-00-393-3221 is a Countershaft and Gear, manufactured by Spalla Inc, classified under FSC 2520 (No Item Name Available). Status: active.

What are the part numbers for NSN 2520-00-393-3221?

NSN 2520-00-393-3221 has 9 cross-referenced part numbers: 41701 (Spalla Inc), P26916 (Koehring Co Lorain Div), 5234 (Koehring Co Lorain Div), 5234 (Eaton Corp Transmission Div), 41701 (General Motors Llc Dba General Motors Llc) and 4 more.

What NSN replaces 2520-00-393-3221?

There are 12 known substitutes for 2520-00-393-3221: 5306-00-097-8954, 5950-00-193-8662, 4730-00-223-6408 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 41701?

Key specifications for 41701: General Characteristics Item Description: 18.375 IN. O/A LG,DIAMETERS OF STEPS VARY FROM 1.497 IN. TO 4.420 IN. IN. 1 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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