PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

L12S1Universal Joint,vehicular

Spalla Inc · NSN 2520-00-741-2754 · FSC 2520 · No Item Name Available
Verified by PartsTable
NSN 2520-00-741-2754 — this item is cataloged by the U.S. Government under National Stock Number 2520-00-741-2754. Primary manufacturer part number: L12S1.
Features
  • Universal Joint,vehicular — FSC 2520
  • Outside Diameter: 1.938 INCHES NOMINAL IN
  • Major Diameter: 1.257 INCHES NOMINAL IN
  • FSC Application Data: WINCH DRIVE SHAFT,TRUCK
  • Outside Shape: ROUND
  • Bearing Type: PLAIN
  • Length From Universal Joint Spider Centerline to Hub End: 2.625 INCHES NOMINAL IN
  • 4 verified cross-references
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Universal Joint,vehicular, cataloged under National Stock Number 2520-00-741-2754, 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 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2520-00-741-2754
Primary Part NumberL12S1
Item NameUniversal Joint,vehicular
FSC / FSG2520 / 25 — No Item Name Available
ManufacturerSpalla Inc
StatusACTIVE
Outside Diameter1.938 INCHES NOMINAL IN
Major Diameter1.257 INCHES NOMINAL IN
FSC Application DataWINCH DRIVE SHAFT,TRUCK
Outside ShapeROUND
Bearing TypePLAIN
Length From Universal Joint Spider Centerline to Hub End2.625 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
2520-00-317-99306Y1921 INTERCHANGEABLE
Spider,universal Joint,vehicular
Garwood/feller Inc Garwood Winch Div
Cross-Reference Index
Part NumberManufacturer
L12S1 Spalla Inc (USA)
2279474 General Motors Llc Dba General Motors Llc (USA)
7412754 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
2279474 Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 (USA)
Related Parts
2520-00-317-9930INTERCHANGEABLE
SPIDER,UNIVERSAL JOINT,VEHICULAR
6Y1921

Frequently Asked Questions

What is NSN 2520-00-741-2754?

NSN 2520-00-741-2754 is a Universal Joint,vehicular, manufactured by Spalla Inc, classified under FSC 2520 (No Item Name Available). Status: active.

What are the part numbers for NSN 2520-00-741-2754?

NSN 2520-00-741-2754 has 4 cross-referenced part numbers: L12S1 (Spalla Inc), 2279474 (General Motors Llc Dba General Motors Llc), 7412754 (U S Army Tank Automotive Command Amsta-Im-Mm), 2279474 (Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02).

What NSN replaces 2520-00-741-2754?

There is 1 known substitute for 2520-00-741-2754: 2520-00-317-9930. Verify interchangeability with system specifications before substitution.

What are the specifications of L12S1?

Key specifications for L12S1: Overall Length: 7.500 INCHES NOMINAL IN; Outside Diameter: 1.938 INCHES NOMINAL IN; Special Features: HOLE FOR 1/8 IN. PIPE THD LUBRICATION FITTING ON SHAFT END; CONNECTION END TYPE, FIRST END: HUB; CONNECTION END TYPE, SECOND END: SHAFT; SPLINE MAJOR DIAMETER: 1.250 IN. NOM.; SPLINE QUANTITY: 6; SHAFT END SPLINE TYPE: STRAIGHT; LENGTH FROM UNIVERSAL JOINT SPIDER CENTERLINE TO SHAFT END: 4.875 IN. NOM. IN; Major Diameter: 1.257 INCHES NOMINAL IN. 8 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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