PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

309503-031511-1Adapter,straight,tube to Boss

Trilex, Inc. · NSN 4730-01-683-7514 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-683-7514 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-683-7514. Primary manufacturer part number: 309503-031511-1.
Features
  • Adapter,straight,tube to Boss — FSC 4730
  • Flange Face Design: RECESSED STRAIGHT FIRST END
  • Thread Class: 3A FIRST END A
  • Thread Quantity Per Inch: 12 FIRST END
  • Style Designator: FLARELESS W/ OFFSET WRENCHING FACILITY
  • Nominal Thread Size: 3.125 INCHES FIRST END IN
  • Recess Nominal Diameter: 1.380 INCHES FIRST END IN
  • Media for Which Designed: OIL SINGLE RESPONSE
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Adapter,straight,tube to Boss, cataloged under National Stock Number 4730-01-683-7514, 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 Trilex, Inc.. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-683-7514
Primary Part Number309503-031511-1
Item NameAdapter,straight,tube to Boss
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerTrilex, Inc.
StatusACTIVE
Flange Face DesignRECESSED STRAIGHT FIRST END
Thread Class3A FIRST END A
Thread Quantity Per Inch12 FIRST END
Style DesignatorFLARELESS W/ OFFSET WRENCHING FACILITY
Nominal Thread Size3.125 INCHES FIRST END IN
Recess Nominal Diameter1.380 INCHES FIRST END IN
Media for Which DesignedOIL SINGLE RESPONSE
Thread Series DesignatorUNS FIRST END
Thread Quantity Per Inch12 SECOND END
Nominal Thread Size0.9375 INCHES SECOND END IN
Thread Series DesignatorUN SECOND END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5331-01-642-04723-916 INTERCHANGEABLE
O-Ring
Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
6120-01-644-7426 INTERCHANGEABLE
Hydraulic Pwr Unit
Cross-Reference Index
Part NumberManufacturer
11295-02 Rg Industries Inc Div Rg Group (USA)
309503-031511-1 Rg Industries Inc Div Rg Group (USA)
11295-02ITEM400 Rg Industries Inc Div Rg Group (USA)
309503-031511-1 PRIMARY Trilex, Inc. (USA)
Related Parts
5331-01-642-0472INTERCHANGEABLE
O-RING
3-916
6120-01-644-7426INTERCHANGEABLE
HYDRAULIC PWR UNIT

Frequently Asked Questions

What is NSN 4730-01-683-7514?

NSN 4730-01-683-7514 is a Adapter,straight,tube to Boss, manufactured by Trilex, Inc., classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-683-7514?

NSN 4730-01-683-7514 has 4 cross-referenced part numbers: 11295-02 (Rg Industries Inc Div Rg Group), 309503-031511-1 (Rg Industries Inc Div Rg Group), 11295-02ITEM400 (Rg Industries Inc Div Rg Group), 309503-031511-1 (Trilex, Inc.).

What NSN replaces 4730-01-683-7514?

There are 2 known substitutes for 4730-01-683-7514: 5331-01-642-0472, 6120-01-644-7426. Verify interchangeability with system specifications before substitution.

What are the specifications of 309503-031511-1?

Key specifications for 309503-031511-1: Part Name Assigned by Controlling Agency: OIL CONNECTION; Special Features: 2.625 INCHES (NOM) ACROSS FLATS (FIRST END) IN; Flange Face Design: RECESSED STRAIGHT FIRST END; Thread Class: 3A FIRST END A. 13 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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