PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4240-8Inverted Nut,tube Coupling

Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp · NSN 4730-01-151-7163 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-151-7163 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-151-7163. Primary manufacturer part number: 4240-8.
Features
  • Inverted Nut,tube Coupling — FSC 4730
  • Thread Direction: RIGHT-HAND
  • Thread Size: 3/4-16
  • Material: ALUMINUM ALLOY 2024
  • Style Designator: INVERTED NUT, TUBE, FLARE
  • Surface Treatment: ANODIZE
  • Screw Thread Series Designator: UNF
  • Width Across Flats: 0.875 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Fluid conveyance
  • Hydraulic system plumbing
General Description

The Inverted Nut,tube Coupling, cataloged under National Stock Number 4730-01-151-7163, 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 Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN4730-01-151-7163
Primary Part Number4240-8
Item NameInverted Nut,tube Coupling
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerRubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp
StatusACTIVE
Thread DirectionRIGHT-HAND
Thread Size3/4-16
MaterialALUMINUM ALLOY 2024
Style DesignatorINVERTED NUT, TUBE, FLARE
Surface TreatmentANODIZE
Screw Thread Series DesignatorUNF
Width Across Flats0.875 INCHES NOMINAL IN
Tube Outside Diameter for Which Designed0.500 INCHES NOMINAL IN
Smallest Inside Diameter0.505 INCHES NOMINAL IN
Seat Angle in Deg33.0
Casehardening IndicatorNOT CASEHARDENED
Material Document and ClassificationQQ-A-225/6, ALLOY 2024, T351 FED SPEC SINGLE MATERIAL RESPONSE
Thread Class3A A
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5950-00-065-3274900086-0052 INTERCHANGEABLE
Transformer,audio Frequency
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5999-00-102-3150 INTERCHANGEABLE
Heater,thermal Release
4940-00-125-79064240A INTERCHANGEABLE
Press,hydraulic,portable
Bosch Automotive Service Solutions Inc.
5975-00-141-05314240 INTERCHANGEABLE
Box Connector,electrical
Abb Installation Products Inc
5935-00-199-62044-2408 INTERCHANGEABLE
Cover,electrical Connector
Whitney Blake Company Dba Whitney Blake Co
5120-00-203-6436408-C INTERCHANGEABLE
Clamp,c
Diecraft Inc
2920-00-371-46114240 INTERCHANGEABLE
Clamp,ignition Cabl3
L & L Boiler Maintenance Inc
5935-00-848-7921 INTERCHANGEABLE
Adapter,connector
9320-01-048-2928 INTERCHANGEABLE
Rubber Sheet,solid
5962-01-089-280642408 INTERCHANGEABLE
Microcircuit,digital
Raytheon Company Div Rmd Strategic
Cross-Reference Index
Part NumberManufacturer
4240-8 PRIMARY Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp (USA)
4240 Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp (USA)
Related Parts
5950-00-065-3274INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
900086-0052
5999-00-102-3150INTERCHANGEABLE
HEATER,THERMAL RELEASE
4940-00-125-7906INTERCHANGEABLE
PRESS,HYDRAULIC,PORTABLE
4240A
5975-00-141-0531INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
4240
5935-00-199-6204INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
4-2408
5120-00-203-6436INTERCHANGEABLE
CLAMP,C
408-C
2920-00-371-4611INTERCHANGEABLE
CLAMP,IGNITION CABL3
4240
5935-00-848-7921INTERCHANGEABLE
ADAPTER,CONNECTOR
9320-01-048-2928INTERCHANGEABLE
RUBBER SHEET,SOLID
5962-01-089-2806INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
42408
5950-01-186-3855INTERCHANGEABLE
TOROID COIL ASSY
4820-01-223-8644INTERCHANGEABLE
VALVE,CHECK
020230830K

Frequently Asked Questions

What is NSN 4730-01-151-7163?

NSN 4730-01-151-7163 is a Inverted Nut,tube Coupling, manufactured by Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-151-7163?

NSN 4730-01-151-7163 has 2 cross-referenced part numbers: 4240-8 (Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp), 4240 (Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp).

What NSN replaces 4730-01-151-7163?

There are 12 known substitutes for 4730-01-151-7163: 5950-00-065-3274, 5999-00-102-3150, 4940-00-125-7906 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4240-8?

Key specifications for 4240-8: Thread Direction: RIGHT-HAND; Thread Size: 3/4-16; Material: ALUMINUM ALLOY 2024; Style Designator: INVERTED NUT, TUBE, FLARE. 14 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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