PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6-37-2Adapter,straight,pipe to Tube

Jm Fittings, Llc Dba L & L Fittings Mfg · NSN 4730-00-541-0939 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-541-0939 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-541-0939. Primary manufacturer part number: 6-37-2.
Features
  • Adapter,straight,pipe to Tube — FSC 4730
  • Nominal Thread Size: 0.250 INCHES SECOND END IN
  • Connection Style: FLARED (TUBE) FIRST END
  • Connection Style: PLAIN (PIPE) SECOND END
  • Seat Angle: 37.0 DEGREES FIRST END
  • Thread Series Designator: UNF FIRST END
  • Thread Class: 3A FIRST END A
  • Connection Type: THREADED EXTERNAL TUBE FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Overall construction
General Description

The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-00-541-0939, 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 Jm Fittings, Llc Dba L & L Fittings Mfg. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-541-0939
Primary Part Number6-37-2
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerJm Fittings, Llc Dba L & L Fittings Mfg
StatusCANCELLED
Nominal Thread Size0.250 INCHES SECOND END IN
Connection StyleFLARED (TUBE) FIRST END
Connection StylePLAIN (PIPE) SECOND END
Seat Angle37.0 DEGREES FIRST END
Thread Series DesignatorUNF FIRST END
Thread Class3A FIRST END A
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Nominal Overall Length1.437 INCHES IN
Nominal Outside Diameter Tube Accommodated0.375 INCHES FIRST END IN
Nominal Thread Size0.562 INCHES FIRST END IN
MaterialSTEEL OVERALL
Surface TreatmentCADMIUM OVERALL
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Thread Series DesignatorNPTF SECOND END
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5310-00-043-0521 INTERCHANGEABLE
Washer,flat
8345-00-233-2903 INTERCHANGEABLE
Flag,national
8345-00-245-2758 INTERCHANGEABLE
Flag,national
5960-00-262-37908674 INTERCHANGEABLE
Shield,electron Tube
Cinch Connectivity Solutions Inc.
5310-00-262-4373 INTERCHANGEABLE
Washer,flat
8345-00-264-2652 INTERCHANGEABLE
Flag,national
2990-00-277-8508T-8674 INTERCHANGEABLE
Muffler,intake
Cummins Filtration Inc.
5330-00-351-667716-632 INTERCHANGEABLE
Gasket
Dresser Industries Inc Leroi Div
4820-00-352-187910125002 INTERCHANGEABLE
Valve,check
Fwd Seagrave Holdings Lp
6695-00-395-0276 INTERCHANGEABLE
Gage,bayonet
Cross-Reference Index
Part NumberManufacturer
6-37-2 Jm Fittings, Llc Dba L & L Fittings Mfg (USA)
8-674 Challenge Machinery Co the (USA)
H-241-13 Challenge Machinery Co the (USA)
Related Parts
5310-00-043-0521INTERCHANGEABLE
WASHER,FLAT
8345-00-233-2903INTERCHANGEABLE
FLAG,NATIONAL
8345-00-245-2758INTERCHANGEABLE
FLAG,NATIONAL
5960-00-262-3790INTERCHANGEABLE
SHIELD,ELECTRON TUBE
8674
5310-00-262-4373INTERCHANGEABLE
WASHER,FLAT
8345-00-264-2652INTERCHANGEABLE
FLAG,NATIONAL
2990-00-277-8508INTERCHANGEABLE
MUFFLER,INTAKE
T-8674
5330-00-351-6677INTERCHANGEABLE
GASKET
16-632
4820-00-352-1879INTERCHANGEABLE
VALVE,CHECK
10125002
6695-00-395-0276INTERCHANGEABLE
GAGE,BAYONET
4910-00-490-8435INTERCHANGEABLE
HOSE ASSY-VACUUM
5330-00-514-4459INTERCHANGEABLE
RETAINER,PACKING
6372

Frequently Asked Questions

What is NSN 4730-00-541-0939?

NSN 4730-00-541-0939 is a Adapter,straight,pipe to Tube, manufactured by Jm Fittings, Llc Dba L & L Fittings Mfg, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-541-0939?

NSN 4730-00-541-0939 has 3 cross-referenced part numbers: 6-37-2 (Jm Fittings, Llc Dba L & L Fittings Mfg), 8-674 (Challenge Machinery Co the), H-241-13 (Challenge Machinery Co the).

What NSN replaces 4730-00-541-0939?

There are 12 known substitutes for 4730-00-541-0939: 5310-00-043-0521, 8345-00-233-2903, 8345-00-245-2758 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6-37-2?

Key specifications for 6-37-2: Nominal Thread Size: 0.250 INCHES SECOND END IN; Connection Style: FLARED (TUBE) FIRST END; Connection Style: PLAIN (PIPE) SECOND END; Seat Angle: 37.0 DEGREES FIRST END. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-541-0939 still in active supply?

NSN 4730-00-541-0939 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com