PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C1-4Cross,tube

Mueller Brass Co. · NSN 4730-00-307-4710 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-307-4710 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-307-4710. Primary manufacturer part number: C1-4.
Features
  • Cross,tube — FSC 4730
  • Material: COPPER ALLOY OVERALL
  • Connection Style: FLARED (TUBE) FIRST END
  • Leg Length: 0.438 INCHES NOMINAL FIRST END IN
  • Connection Type: THREADED EXTERNAL TUBE FIRST END
  • Nominal Thread Size: 0.438 INCHES FIRST END IN
  • Thread Class: 2A FIRST END A
  • Nominal Outside Diameter Tube Accommodated: 0.250 INCHES FIRST END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Cross,tube, cataloged under National Stock Number 4730-00-307-4710, 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 Mueller Brass Co.. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 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
NSN4730-00-307-4710
Primary Part NumberC1-4
Item NameCross,tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMueller Brass Co.
StatusACTIVE
MaterialCOPPER ALLOY OVERALL
Connection StyleFLARED (TUBE) FIRST END
Leg Length0.438 INCHES NOMINAL FIRST END IN
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Nominal Thread Size0.438 INCHES FIRST END IN
Thread Class2A FIRST END A
Nominal Outside Diameter Tube Accommodated0.250 INCHES FIRST END IN
Thread Series DesignatorUNF FIRST END
Seat Angle45.0 DEGREES FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5340-00-066-8671C14 INTERCHANGEABLE
Clamp,synchro
Designatronics Inc Div Stock Drive Products
4130-00-100-4545C14 INTERCHANGEABLE
Strainer,capillary,refrigerant
R S P Industries Inc
5110-00-221-1372 INTERCHANGEABLE
Chisel,cold,hand
4910-00-346-4313C14 INTERCHANGEABLE
Indicator,piston Position,igniti
Parker Hannifin Corp Dba Pneutronics
4730-00-401-371310BTXB INTERCHANGEABLE
Nut,tube Coupling
Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division
4320-00-451-7964 INTERCHANGEABLE
Stuffing Box,pump
3110-00-516-6131DA14-42A INTERCHANGEABLE
Bearing,roller,airframe
Rexnord Industries, Llc Div Aerosspace Bearing Operation
2940-00-529-273715 INTERCHANGEABLE
Filter Element,fluid
Naval Construction Battalion Center Civil Engineer Support Office Dba Exwc Ex24 Div Ex24 Tools
3040-00-713-0396A3-18 INTERCHANGEABLE
Shaft,straight
Roller Bearing Co of America, Inc Div Pic Design
6105-00-738-4372 INTERCHANGEABLE
Motor,alternating Current
Cross-Reference Index
Part NumberManufacturer
C1-4 Mueller Brass Co. (USA)
A318 Mueller Brass Co. (USA)
652-F-04 Imperial (USA)
Related Parts
5340-00-066-8671INTERCHANGEABLE
CLAMP,SYNCHRO
C14
4130-00-100-4545INTERCHANGEABLE
STRAINER,CAPILLARY,REFRIGERANT
C14
5110-00-221-1372INTERCHANGEABLE
CHISEL,COLD,HAND
4910-00-346-4313INTERCHANGEABLE
INDICATOR,PISTON POSITION,IGNITI
C14
4730-00-401-3713INTERCHANGEABLE
NUT,TUBE COUPLING
10BTXB
4320-00-451-7964INTERCHANGEABLE
STUFFING BOX,PUMP
3110-00-516-6131INTERCHANGEABLE
BEARING,ROLLER,AIRFRAME
DA14-42A
2940-00-529-2737INTERCHANGEABLE
FILTER ELEMENT,FLUID
15
3040-00-713-0396INTERCHANGEABLE
SHAFT,STRAIGHT
A3-18
6105-00-738-4372INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
1095-00-782-9805INTERCHANGEABLE
FINAL ASSY,LOCK CON
8040-00-894-2269INTERCHANGEABLE
ADHESIVE
EY-4014 A/B

Frequently Asked Questions

What is NSN 4730-00-307-4710?

NSN 4730-00-307-4710 is a Cross,tube, manufactured by Mueller Brass Co., classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-307-4710?

NSN 4730-00-307-4710 has 3 cross-referenced part numbers: C1-4 (Mueller Brass Co.), A318 (Mueller Brass Co.), 652-F-04 (Imperial).

What NSN replaces 4730-00-307-4710?

There are 12 known substitutes for 4730-00-307-4710: 5340-00-066-8671, 4130-00-100-4545, 5110-00-221-1372 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of C1-4?

Key specifications for C1-4: Material: COPPER ALLOY OVERALL; Connection Style: FLARED (TUBE) FIRST END; Leg Length: 0.438 INCHES NOMINAL FIRST END IN; Connection Type: THREADED EXTERNAL TUBE FIRST END. 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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