PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

268PAdapter,straight,pipe to Tube

Imperial · NSN 4730-00-631-1267 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-631-1267 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-631-1267. Primary manufacturer part number: 268P.
Features
  • Adapter,straight,pipe to Tube — FSC 4730
  • Thread Series Designator: NPTF SECOND END
  • Nominal Overall Length: 1.050 INCHES IN
  • Operating Pressure: 160.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Connection Style: PLAIN (PIPE) SECOND END
  • Nominal Outside Diameter Tube Accommodated: 0.312 INCHES FIRST END IN
  • Tubing Wall Nominal Thickness for Which Designed: 0.032 INCHES FIRST END IN
  • Connection Type: UNTHREADED INTERNAL TUBE FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-00-631-1267, 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 Imperial. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-631-1267
Primary Part Number268P
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerImperial
StatusACTIVE
Thread Series DesignatorNPTF SECOND END
Nominal Overall Length1.050 INCHES IN
Operating Pressure160.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Connection StylePLAIN (PIPE) SECOND END
Nominal Outside Diameter Tube Accommodated0.312 INCHES FIRST END IN
Tubing Wall Nominal Thickness for Which Designed0.032 INCHES FIRST END IN
Connection TypeUNTHREADED INTERNAL TUBE FIRST END
MaterialCOPPER ALLOY OVERALL
Nominal Thread Size0.125 INCHES SECOND END IN
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Connection StylePLAIN (TUBE) FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
2805-00-318-8572234P INTERCHANGEABLE
Piston,internal Combustion Engin
Federal-Mogul Corp Government Sales Dept
4730-00-618-7501 INTERCHANGEABLE
Adapter,straight,pipe to Tube
4730-00-882-694268P-4-2 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Parker-Hannifin Corp Div Fluid System Connector Division
4730-01-008-3185 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Cross-Reference Index
Part NumberManufacturer
268P Imperial (USA)
8894293 Imperial (USA)
68P5-2 Parker-Hannifin Corp Div Fluid System Connector Division (USA)
8894293 Us Army Aviation and Missile Command (USA)
W68P-5-2 Parker Hannifin Canada Div Fluid Connectors Canada (CAN)
10710671-001 General Dynamics Land Systems Canadacorp (CAN)
Related Parts
2805-00-318-8572INTERCHANGEABLE
PISTON,INTERNAL COMBUSTION ENGIN
234P
4730-00-618-7501INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
4730-00-882-6942INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
68P-4-2
4730-01-008-3185INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE

Frequently Asked Questions

What is NSN 4730-00-631-1267?

NSN 4730-00-631-1267 is a Adapter,straight,pipe to Tube, manufactured by Imperial, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-631-1267?

NSN 4730-00-631-1267 has 6 cross-referenced part numbers: 268P (Imperial), 8894293 (Imperial), 68P5-2 (Parker-Hannifin Corp Div Fluid System Connector Division), 8894293 (Us Army Aviation and Missile Command), W68P-5-2 (Parker Hannifin Canada Div Fluid Connectors Canada) and 1 more.

What NSN replaces 4730-00-631-1267?

There are 4 known substitutes for 4730-00-631-1267: 2805-00-318-8572, 4730-00-618-7501, 4730-00-882-6942 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 268P?

Key specifications for 268P: Thread Series Designator: NPTF SECOND END; Nominal Overall Length: 1.050 INCHES IN; Operating Pressure: 160.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Connection Style: PLAIN (PIPE) SECOND END. 11 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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