PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

RF903Nipple,pipe

Wisconsin Motors, Llc · NSN 4730-00-421-3781 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-421-3781 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-421-3781. Primary manufacturer part number: RF903.
Features
  • Nipple,pipe — FSC 4730
  • Connection Type: THREADED EXTERNAL PIPE ALL ENDS
  • Thread Series Designator: NPT ALL ENDS
  • Connection Style: PLAIN (PIPE) ALL ENDS
  • 2 verified cross-references
  • Primary manufacturer: Wisconsin Motors, Llc
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Nipple,pipe, cataloged under National Stock Number 4730-00-421-3781, 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 Wisconsin Motors, Llc. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-421-3781
Primary Part NumberRF903
Item NameNipple,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerWisconsin Motors, Llc
StatusACTIVE
Connection TypeTHREADED EXTERNAL PIPE ALL ENDS
Thread Series DesignatorNPT ALL ENDS
Connection StylePLAIN (PIPE) ALL ENDS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5905-00-407-2546128C981H01 INTERCHANGEABLE
Resistor Network,fixed,film
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
9540-00-988-8623 INTERCHANGEABLE
Beam,structural
3895-01-075-574356112 INTERCHANGEABLE
Pad
Dressta North America Ltd
5930-01-290-3301561-1-2 INTERCHANGEABLE
Switch,push
Allard Nazarian Group, Inc. Dba Granite State Manufacturing
Cross-Reference Index
Part NumberManufacturer
56112 Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp. (USA)
RF903 PRIMARY Wisconsin Motors, Llc (USA)
Related Parts
5905-00-407-2546INTERCHANGEABLE
RESISTOR NETWORK,FIXED,FILM
128C981H01
9540-00-988-8623INTERCHANGEABLE
BEAM,STRUCTURAL
3895-01-075-5743INTERCHANGEABLE
PAD
56112
5930-01-290-3301INTERCHANGEABLE
SWITCH,PUSH
561-1-2

Frequently Asked Questions

What is NSN 4730-00-421-3781?

NSN 4730-00-421-3781 is a Nipple,pipe, manufactured by Wisconsin Motors, Llc, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-421-3781?

NSN 4730-00-421-3781 has 2 cross-referenced part numbers: 56112 (Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.), RF903 (Wisconsin Motors, Llc).

What NSN replaces 4730-00-421-3781?

There are 4 known substitutes for 4730-00-421-3781: 5905-00-407-2546, 9540-00-988-8623, 3895-01-075-5743 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of RF903?

Key specifications for RF903: Connection Type: THREADED EXTERNAL PIPE ALL ENDS; Thread Series Designator: NPT ALL ENDS; Connection Style: PLAIN (PIPE) ALL ENDS. 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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