PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

437187A1Arm,steering Gear

Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems · NSN 2530-00-305-9873 · FSC 2530 · No Item Name Available
Verified by PartsTable
NSN 2530-00-305-9873 — this item is cataloged by the U.S. Government under National Stock Number 2530-00-305-9873. Primary manufacturer part number: 437187A1.
Features
  • Arm,steering Gear — FSC 2530
  • Drag Link End Characteristic: W/INTEGRAL BALL
  • Center to Center Distance Between Ball/ball Stud Hole and Sector Shaft Bore: 7.750 INCHES NOMINAL IN
  • Sector Shaft Mounting End Overall Thickness: 1.250 INCHES NOMINAL IN
  • Diameter: 1.723 INCHES MINIMUM AND 1.733 INCHES MAXIMUM IN
  • Taper Length: 1.188 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN
  • Small End Major Diameter: 1.420 INCHES NOMINAL IN
  • Sector Shaft Mounting End Serrated Bore: INCLUDED
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
General Description

The Arm,steering Gear, cataloged under National Stock Number 2530-00-305-9873, is classified within Federal Supply Class 2530 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, 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
NSN2530-00-305-9873
Primary Part Number437187A1
Item NameArm,steering Gear
FSC / FSG2530 / 25 — No Item Name Available
ManufacturerZf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems
StatusACTIVE
Drag Link End CharacteristicW/INTEGRAL BALL
Center to Center Distance Between Ball/ball Stud Hole and Sector Shaft Bore7.750 INCHES NOMINAL IN
Sector Shaft Mounting End Overall Thickness1.250 INCHES NOMINAL IN
Diameter1.723 INCHES MINIMUM AND 1.733 INCHES MAXIMUM IN
Taper Length1.188 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN
Small End Major Diameter1.420 INCHES NOMINAL IN
Sector Shaft Mounting End Serrated BoreINCLUDED
Design TypeSTRAIGHT
Teeth Quantity36
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5330-00-238-794454-738 INTERCHANGEABLE
Gasket
Itw Industrial Finishing Dba Binks Devilbiss
5815-00-330-5698SM-C-186963 INTERCHANGEABLE
Teletypewriter Subassembly
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5136-00-580-718454738 INTERCHANGEABLE
Tap,thread Cutting
Tapco Cutting Tools Inc
Cross-Reference Index
Part NumberManufacturer
437187A1 PRIMARY Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems (USA)
H30317 Tfi Corp Ndt Products Div (USA)
54738 Komatsu American Intl Co (USA)
436962-33 PRIMARY Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems (USA)
437187-33 Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems (USA)
54738 PRIMARY Komatsu America Corp. (USA)
Related Parts
5330-00-238-7944INTERCHANGEABLE
GASKET
54-738
5815-00-330-5698INTERCHANGEABLE
TELETYPEWRITER SUBASSEMBLY
SM-C-186963
5136-00-580-7184INTERCHANGEABLE
TAP,THREAD CUTTING
54738

Frequently Asked Questions

What is NSN 2530-00-305-9873?

NSN 2530-00-305-9873 is a Arm,steering Gear, manufactured by Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems, classified under FSC 2530 (No Item Name Available). Status: active.

What are the part numbers for NSN 2530-00-305-9873?

NSN 2530-00-305-9873 has 6 cross-referenced part numbers: 437187A1 (Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems), H30317 (Tfi Corp Ndt Products Div), 54738 (Komatsu American Intl Co), 436962-33 (Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems), 437187-33 (Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems) and 1 more.

What NSN replaces 2530-00-305-9873?

There are 3 known substitutes for 2530-00-305-9873: 5330-00-238-7944, 5815-00-330-5698, 5136-00-580-7184. Verify interchangeability with system specifications before substitution.

What are the specifications of 437187A1?

Key specifications for 437187A1: Drag Link End Characteristic: W/INTEGRAL BALL; Center to Center Distance Between Ball/ball Stud Hole and Sector Shaft Bore: 7.750 INCHES NOMINAL IN; Sector Shaft Mounting End Overall Thickness: 1.250 INCHES NOMINAL IN; Diameter: 1.723 INCHES MINIMUM AND 1.733 INCHES MAXIMUM IN. 9 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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