PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

309-5Tube Assembly,metal

Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems · NSN 4710-00-787-6550 · FSC 4710 · No Item Name Available
Verified by PartsTable
NSN 4710-00-787-6550 — this item is cataloged by the U.S. Government under National Stock Number 4710-00-787-6550. Primary manufacturer part number: 309-5.
Features
  • Tube Assembly,metal — FSC 4710
  • Thread Class: 2A SINGLE END A
  • Material: STEEL TUBING
  • Thread Series Designator: UN SINGLE END
  • End Connection Style: INVERTED FLARE SINGLE END
  • Seat Angle in Deg: 37.0 SINGLE END
  • Tube Outside Diameter: 0.375 INCHES NOMINAL IN
  • Design Form: STRAIGHT
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Tubing construction
General Description

The Tube Assembly,metal, cataloged under National Stock Number 4710-00-787-6550, is classified within Federal Supply Class 4710 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 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
NSN4710-00-787-6550
Primary Part Number309-5
Item NameTube Assembly,metal
FSC / FSG4710 / 47 — No Item Name Available
ManufacturerStanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
StatusACTIVE
Thread Class2A SINGLE END A
MaterialSTEEL TUBING
Thread Series DesignatorUN SINGLE END
End Connection StyleINVERTED FLARE SINGLE END
Seat Angle in Deg37.0 SINGLE END
Tube Outside Diameter0.375 INCHES NOMINAL IN
Design FormSTRAIGHT
MaterialSTEEL SINGLE END
Nominal Thread Size0.562 INCHES SINGLE END IN
Mating End Quantity1 SINGLE END
Wall Thickness0.065 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND SINGLE END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5365-00-003-412330-95 INTERCHANGEABLE
Shim Set
Cone Drive Operations Inc
4820-00-137-6284 INTERCHANGEABLE
Diaphragm,valve,flat
5330-00-246-39843095 INTERCHANGEABLE
Seal,plain Encased
Lake Shore Systems, Inc.
5210-00-267-30955210-00-267-3095 INTERCHANGEABLE
Gage Stock Set,thickness
General Services Administration Federal Supply Service
4940-00-391-4566 INTERCHANGEABLE
Blade
5340-00-395-8758 INTERCHANGEABLE
Crank,hand
5985-00-436-70903095 INTERCHANGEABLE
Coupler,directional
Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq
5977-00-441-819011345 INTERCHANGEABLE
Brush,electrical Contact
Safran Power Usa Llc
5210-00-528-7874 INTERCHANGEABLE
Gage,thickness
4720-00-554-8086 INTERCHANGEABLE
Hose,nonmetallic
Cross-Reference Index
Part NumberManufacturer
A6937-22 Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA)
309-5 PRIMARY Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems (USA)
11345 Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems (USA)
309-8 Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems (USA)
11345 Lockwood Corp (USA)
Related Parts
5365-00-003-4123INTERCHANGEABLE
SHIM SET
30-95
4820-00-137-6284INTERCHANGEABLE
DIAPHRAGM,VALVE,FLAT
5330-00-246-3984INTERCHANGEABLE
SEAL,PLAIN ENCASED
3095
5210-00-267-3095INTERCHANGEABLE
GAGE STOCK SET,THICKNESS
5210-00-267-3095
4940-00-391-4566INTERCHANGEABLE
BLADE
5340-00-395-8758INTERCHANGEABLE
CRANK,HAND
5985-00-436-7090INTERCHANGEABLE
COUPLER,DIRECTIONAL
3095
5977-00-441-8190INTERCHANGEABLE
BRUSH,ELECTRICAL CONTACT
11345
5210-00-528-7874INTERCHANGEABLE
GAGE,THICKNESS
4720-00-554-8086INTERCHANGEABLE
HOSE,NONMETALLIC
3940-00-618-3727INTERCHANGEABLE
SLING,MULTIPLE LEG
5110-00-658-8101INTERCHANGEABLE
CUTTING WHEEL,GLASS

Frequently Asked Questions

What is NSN 4710-00-787-6550?

NSN 4710-00-787-6550 is a Tube Assembly,metal, manufactured by Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems, classified under FSC 4710 (No Item Name Available). Status: active.

What are the part numbers for NSN 4710-00-787-6550?

NSN 4710-00-787-6550 has 5 cross-referenced part numbers: A6937-22 (Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc), 309-5 (Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems), 11345 (Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems), 309-8 (Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems), 11345 (Lockwood Corp).

What NSN replaces 4710-00-787-6550?

There are 12 known substitutes for 4710-00-787-6550: 5365-00-003-4123, 4820-00-137-6284, 5330-00-246-3984 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 309-5?

Key specifications for 309-5: Thread Class: 2A SINGLE END A; Special Features: SECOND END IS BANJO TYPE 0.375 IN. ID,0.656 IN. OD,0.375 IN. THK IN; Material: STEEL TUBING; Thread Series Designator: UN SINGLE END. 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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