PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A1898U203Fitting,lubrication

Utility Trailer Mfg Co · NSN 4730-00-506-1610 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-506-1610 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-506-1610. Primary manufacturer part number: A1898U203.
Features
  • Fitting,lubrication — FSC 4730
  • Screw Thread Series Designator: PTF-SPL SHORT
  • Height: 0.812 INCHES NOMINAL IN
  • Style Designator: STRAIGHT
  • Pressure Relief Method: PORT SIDE
  • Material: STEEL OVERALL
  • Width Across Flats: 0.438 INCHES NOMINAL IN
  • Nominal Thread Size: 0.125 INCHES IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Fitting,lubrication, cataloged under National Stock Number 4730-00-506-1610, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Utility Trailer Mfg Co. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 41 commercial cross-references from 36 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-506-1610
Primary Part NumberA1898U203
Item NameFitting,lubrication
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerUtility Trailer Mfg Co
StatusCANCELLED
Screw Thread Series DesignatorPTF-SPL SHORT
Height0.812 INCHES NOMINAL IN
Style DesignatorSTRAIGHT
Pressure Relief MethodPORT SIDE
MaterialSTEEL OVERALL
Width Across Flats0.438 INCHES NOMINAL IN
Nominal Thread Size0.125 INCHES IN
Thread Quantity Per Inch27
Surface TreatmentZINC OVERALL
Shank Length0.266 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6250-00-151-4213 INTERCHANGEABLE
Lampholder
3110-00-158-61922063-1 INTERCHANGEABLE
Bearing,ball,thrust
Federal-Mogul Corp Government Sales Dept
6810-00-275-8125 INTERCHANGEABLE
Ferric Ammonium Sulfate
6250-00-299-70911988 INTERCHANGEABLE
Lampholder
Carlisle & Finch Co
3040-00-496-1593 INTERCHANGEABLE
Shaft,straight
6240-00-548-3978CM1988-GOVT INTERCHANGEABLE
Lamp,incandescent
Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron
5342-00-870-5350 INTERCHANGEABLE
Ferrule
4730-01-066-01291988 INTERCHANGEABLE
Plug,pipe
DP Mfg Inc
5330-01-119-79721988 INTERCHANGEABLE
Gasket
Arkema Inc
4730-01-151-562244AX 115 INTERCHANGEABLE
Fitting,lubrication
Mack Trucks, Inc. Dba Macungie Operations Div Lehigh Valley Operations
Cross-Reference Index
Part NumberManufacturer
A1898U203 Lufkin Industries, Inc. Dba Power Transmission (USA)
A1898U203 Gate City Steel Corp (USA)
A1898U203 Strick Trailer Co (USA)
BB170A1-8 Keystone Lubricants (USA)
A1898U203 PRIMARY Utility Trailer Mfg Co (USA)
A1898U203 PRIMARY Dorsey Trailers Inc (USA)
A1898U203 PRIMARY Abm Equipment, Llc (USA)
485M1 Diamond Reo Truck Co (USA)
1982A Stewart-Warner Alemite Corp (USA)
7001733 PRIMARY U S Army Tank Automotive Command Amsta-Im-Mm (USA)
A1898U203 Queen City Mfg Co (USA)
BB6083 Diamond Reo Truck Co (USA)
1988 Stewart-Warner Alemite Corp (USA)
11A7053 PRIMARY Napco International Llc Dba Napco International Inc (USA)
1982A PRIMARY Stewart-Warner Corporation (USA)
2149411 General Motors Llc Dba General Motors Llc (USA)
A1898U203 PRIMARY Meritor Heavy Vehicle Systems, Llc (USA)
44AX121 PRIMARY Mack Trucks, Inc. Dba Macungie Operations Div Lehigh Valley Operations (USA)
A1898U203 PRIMARY American Trailers Inc (USA)
7040076 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
Related Parts
6250-00-151-4213INTERCHANGEABLE
LAMPHOLDER
3110-00-158-6192INTERCHANGEABLE
BEARING,BALL,THRUST
2063-1
6810-00-275-8125INTERCHANGEABLE
FERRIC AMMONIUM SULFATE
6250-00-299-7091INTERCHANGEABLE
LAMPHOLDER
1988
3040-00-496-1593INTERCHANGEABLE
SHAFT,STRAIGHT
6240-00-548-3978INTERCHANGEABLE
LAMP,INCANDESCENT
CM1988-GOVT
5342-00-870-5350INTERCHANGEABLE
FERRULE
4730-01-066-0129INTERCHANGEABLE
PLUG,PIPE
1988
5330-01-119-7972INTERCHANGEABLE
GASKET
1988
4730-01-151-5622INTERCHANGEABLE
FITTING,LUBRICATION
44AX 115
4820-01-319-9983INTERCHANGEABLE
VALVE,CHECK
1988
4930-01-468-7899INTERCHANGEABLE
LUBRICATING UNIT,POWER OPERATED

Frequently Asked Questions

What is NSN 4730-00-506-1610?

NSN 4730-00-506-1610 is a Fitting,lubrication, manufactured by Utility Trailer Mfg Co, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-506-1610?

NSN 4730-00-506-1610 has 41 cross-referenced part numbers: A1898U203 (Lufkin Industries, Inc. Dba Power Transmission), A1898U203 (Gate City Steel Corp), A1898U203 (Strick Trailer Co), BB170A1-8 (Keystone Lubricants), A1898U203 (Utility Trailer Mfg Co) and 36 more.

What NSN replaces 4730-00-506-1610?

There are 12 known substitutes for 4730-00-506-1610: 6250-00-151-4213, 3110-00-158-6192, 6810-00-275-8125 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A1898U203?

Key specifications for A1898U203: Screw Thread Series Designator: PTF-SPL SHORT; Height: 0.812 INCHES NOMINAL IN; Style Designator: STRAIGHT; Pressure Relief Method: PORT SIDE. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-506-1610 still in active supply?

NSN 4730-00-506-1610 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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