PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

405-4-4Elbow,pipe to Tube

Lenz Inc Dba the Lenz Company · NSN 4730-00-677-2554 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-677-2554 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-677-2554. Primary manufacturer part number: 405-4-4.
Features
  • Elbow,pipe to Tube — FSC 4730
  • Connection Style: PLAIN (PIPE) SECOND END
  • Connection Style: GASKET SEAL, COMPRESSION (TUBE) FIRST END
  • Nominal Thread Size: 0.500 INCHES FIRST END IN
  • Thread Series Designator: UNF FIRST END
  • Connection Type: THREADED EXTERNAL PIPE SECOND END
  • Surface Treatment: CADMIUM OUTSIDE
  • Thread Series Designator: NPTF SECOND END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Overall construction
General Description

The Elbow,pipe to Tube, cataloged under National Stock Number 4730-00-677-2554, 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 Lenz Inc Dba the Lenz Company. Government technical data includes 17 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-677-2554
Primary Part Number405-4-4
Item NameElbow,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerLenz Inc Dba the Lenz Company
StatusACTIVE
Connection StylePLAIN (PIPE) SECOND END
Connection StyleGASKET SEAL, COMPRESSION (TUBE) FIRST END
Nominal Thread Size0.500 INCHES FIRST END IN
Thread Series DesignatorUNF FIRST END
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Surface TreatmentCADMIUM OUTSIDE
Thread Series DesignatorNPTF SECOND END
Nominal Pipe Size Accommodated0.250 INCHES SECOND END IN
Leg Length1.094 INCHES NOMINAL SECOND END IN
Nominal Outside Diameter Tube Accommodated0.312 INCHES FIRST END IN
Thread Class2A FIRST END A
Flow Angle90.0 DEGREES
MaterialSTEEL OVERALL
Nominal Thread Size0.125 INCHES SECOND END IN
Leg Length0.750 INCHES NOMINAL FIRST END IN
Surface TreatmentCADMIUM INSIDE
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3455-00-243-2180 INTERCHANGEABLE
Cutter,milling,woodruff Keyseat
2805-00-449-633640544 INTERCHANGEABLE
Cap,crankshaft Bear
Brinkley Technology Group Llc Dba Hercules Manufacturing
2510-01-062-3936 INTERCHANGEABLE
Support Assembly
6680-01-104-429540544 INTERCHANGEABLE
Transmitter,liquid Quantity
Setra Systems, Inc. Dba Gems Sensors
5360-01-216-699240544 INTERCHANGEABLE
Spring,helical,compression
Mcnally Industries Llc Div Northern Pump Division
Cross-Reference Index
Part NumberManufacturer
1655818PC2 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
405-4-4 PRIMARY Lenz Inc Dba the Lenz Company (USA)
Related Parts
3455-00-243-2180INTERCHANGEABLE
CUTTER,MILLING,WOODRUFF KEYSEAT
2805-00-449-6336INTERCHANGEABLE
CAP,CRANKSHAFT BEAR
40544
2510-01-062-3936INTERCHANGEABLE
SUPPORT ASSEMBLY
6680-01-104-4295INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
40544
5360-01-216-6992INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
40544

Frequently Asked Questions

What is NSN 4730-00-677-2554?

NSN 4730-00-677-2554 is a Elbow,pipe to Tube, manufactured by Lenz Inc Dba the Lenz Company, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-677-2554?

NSN 4730-00-677-2554 has 2 cross-referenced part numbers: 1655818PC2 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 405-4-4 (Lenz Inc Dba the Lenz Company).

What NSN replaces 4730-00-677-2554?

There are 5 known substitutes for 4730-00-677-2554: 3455-00-243-2180, 2805-00-449-6336, 2510-01-062-3936 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 405-4-4?

Key specifications for 405-4-4: Connection Style: PLAIN (PIPE) SECOND END; Connection Style: GASKET SEAL, COMPRESSION (TUBE) FIRST END; Nominal Thread Size: 0.500 INCHES FIRST END IN; Thread Series Designator: UNF FIRST END. 17 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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