PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B815-4Insert,tube Fitting

Swagelok Co · NSN 4730-00-771-5307 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-771-5307 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-771-5307. Primary manufacturer part number: B815-4.
Features
  • Insert,tube Fitting — FSC 4730
  • Style Designator: SERRATED
  • Flange Outside Diameter: 0.500 INCHES NOMINAL IN
  • Tube Inside Diameter for Which Designed: 0.250 INCHES NOMINAL IN
  • Material: COPPER ALLOY
  • Casehardening Indicator: NOT CASEHARDENED
  • 6 verified cross-references
  • Primary manufacturer: Swagelok Co
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy construction
General Description

The Insert,tube Fitting, cataloged under National Stock Number 4730-00-771-5307, 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 Swagelok Co. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-771-5307
Primary Part NumberB815-4
Item NameInsert,tube Fitting
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerSwagelok Co
StatusACTIVE
Style DesignatorSERRATED
Flange Outside Diameter0.500 INCHES NOMINAL IN
Tube Inside Diameter for Which Designed0.250 INCHES NOMINAL IN
MaterialCOPPER ALLOY
Casehardening IndicatorNOT CASEHARDENED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5950-00-080-8388 INTERCHANGEABLE
Transformer,power
5905-00-172-8296B8154 INTERCHANGEABLE
Resistor,variable,wire Wound,non
Avtron Aerospace Inc
4730-00-278-3242 INTERCHANGEABLE
Nipple,tube
2825-00-446-92468154 INTERCHANGEABLE
Bushing with Key
Northrop Grumman Systems Corporation Div Marine Systems
5365-00-769-1113 INTERCHANGEABLE
Shim
4730-01-076-32730031130-010 INTERCHANGEABLE
Elbow,pipe
Cleveland Service Center
6645-01-118-4563 INTERCHANGEABLE
Generator,time Code
5985-01-155-7143 INTERCHANGEABLE
Coupler,directional
5331-01-201-20328154 INTERCHANGEABLE
O-Ring
Ottawa Truck Inc Div Cargotec Solutions Llc - Kalmar Americas Region
Cross-Reference Index
Part NumberManufacturer
8 T1Z(.250) Parker-Hannifin Corporation Div Instrumentation Products Division (USA)
815-4 Swagelok Co (USA)
B815-4 PRIMARY Swagelok Co (USA)
T12(.250)-B A. F. Brock & Co. Dba a. F. Brock & Co. / Ph, Inc (USA)
825T23UIB Parker-Hannifin Corporation Div Instrumentation Products Division (USA)
T12(.250)-B Parker-Hannifin Corporation Div Instrumentation Products Division (USA)
Related Parts
5950-00-080-8388INTERCHANGEABLE
TRANSFORMER,POWER
5905-00-172-8296INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
B8154
4730-00-278-3242INTERCHANGEABLE
NIPPLE,TUBE
2825-00-446-9246INTERCHANGEABLE
BUSHING WITH KEY
8154
5365-00-769-1113INTERCHANGEABLE
SHIM
4730-01-076-3273INTERCHANGEABLE
ELBOW,PIPE
0031130-010
6645-01-118-4563INTERCHANGEABLE
GENERATOR,TIME CODE
5985-01-155-7143INTERCHANGEABLE
COUPLER,DIRECTIONAL
5331-01-201-2032INTERCHANGEABLE
O-RING
8154

Frequently Asked Questions

What is NSN 4730-00-771-5307?

NSN 4730-00-771-5307 is a Insert,tube Fitting, manufactured by Swagelok Co, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-771-5307?

NSN 4730-00-771-5307 has 6 cross-referenced part numbers: 8 T1Z(.250) (Parker-Hannifin Corporation Div Instrumentation Products Division), 815-4 (Swagelok Co), B815-4 (Swagelok Co), T12(.250)-B (A. F. Brock & Co. Dba a. F. Brock & Co. / Ph, Inc), 825T23UIB (Parker-Hannifin Corporation Div Instrumentation Products Division) and 1 more.

What NSN replaces 4730-00-771-5307?

There are 9 known substitutes for 4730-00-771-5307: 5950-00-080-8388, 5905-00-172-8296, 4730-00-278-3242 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B815-4?

Key specifications for B815-4: Style Designator: SERRATED; Flange Outside Diameter: 0.500 INCHES NOMINAL IN; Tube Inside Diameter for Which Designed: 0.250 INCHES NOMINAL IN; Material: COPPER ALLOY. 5 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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