PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

26250-2Adapter,straight,pipe to Tube

Haskel International, Llc Dba Haskel International, Llc · NSN 4730-01-251-7658 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-251-7658 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-251-7658. Primary manufacturer part number: 26250-2.
Features
  • Adapter,straight,pipe to Tube — FSC 4730
  • Connection Style: FLARED (TUBE) SECOND END
  • Connection Type: THREADED EXTERNAL TUBE FIRST END
  • Seat Angle: 37.0 DEGREES SECOND END
  • Connection Style: PLAIN (PIPE) FIRST END
  • Nominal Thread Size: 0.562 INCHES SECOND END IN
  • Reduced Passage Nominal Inside Diameter: 0.250 INCHES FIRST END IN
  • Thread Series Designator: NPT FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-01-251-7658, 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 Haskel International, Llc Dba Haskel International, Llc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-251-7658
Primary Part Number26250-2
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerHaskel International, Llc Dba Haskel International, Llc
StatusACTIVE
Connection StyleFLARED (TUBE) SECOND END
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Seat Angle37.0 DEGREES SECOND END
Connection StylePLAIN (PIPE) FIRST END
Nominal Thread Size0.562 INCHES SECOND END IN
Reduced Passage Nominal Inside Diameter0.250 INCHES FIRST END IN
Thread Series DesignatorNPT FIRST END
Nominal Overall Length1.906 INCHES IN
Thread Series DesignatorUNF SECOND END
Connection TypeTHREADED INTERNAL PIPE SECOND END
Thread Class3A SECOND END A
Reduced Passage Nominal Inside Diameter0.094 INCHES SECOND END IN
Nominal Thread Size0.250 INCHES FIRST END IN
Nominal Outside Diameter Tube Accommodated0.250 INCHES SECOND END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6505-01-612-9939 INTERCHANGEABLE
Amyl Nitrite Inhalant
Cross-Reference Index
Part NumberManufacturer
26250-2 Haskel International, Llc Dba Haskel International, Llc (USA)
Related Parts
6505-01-612-9939INTERCHANGEABLE
AMYL NITRITE INHALANT

Frequently Asked Questions

What is NSN 4730-01-251-7658?

NSN 4730-01-251-7658 is a Adapter,straight,pipe to Tube, manufactured by Haskel International, Llc Dba Haskel International, Llc, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-251-7658?

NSN 4730-01-251-7658 has 1 cross-referenced part number: 26250-2 (Haskel International, Llc Dba Haskel International, Llc).

What NSN replaces 4730-01-251-7658?

There is 1 known substitute for 4730-01-251-7658: 6505-01-612-9939. Verify interchangeability with system specifications before substitution.

What are the specifications of 26250-2?

Key specifications for 26250-2: Connection Style: FLARED (TUBE) SECOND END; Connection Type: THREADED EXTERNAL TUBE FIRST END; Seat Angle: 37.0 DEGREES SECOND END; Connection Style: PLAIN (PIPE) FIRST 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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