PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

633-BCoupling Half,quick Disconnect

Opw Fueling Components Inc. Div Opw Fueling Components · NSN 4730-00-051-3426 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-051-3426 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-051-3426. Primary manufacturer part number: 633-B.
Features
  • Coupling Half,quick Disconnect — FSC 4730
  • Quick Disconnect Method: CAM-LOCKING ALL ENDS
  • Style Designator: MALE COUPLING HALF
  • Nominal Thread Size: 6.000 INCHES ALL ENDS IN
  • Material: ALUMINUM BODY
  • Nondefinitive Spec/std Data: 7 TYPE AND 1 CLASS AND 6 SIZE
  • Thread Series Designator: NPT ALL ENDS
  • Specification/standard Data: 81349-MIL-C-27487 GOVERNMENT SPECIFICATION
Applications
  • Applications requiring Aluminum Body construction
General Description

The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-00-051-3426, 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 Opw Fueling Components Inc. Div Opw Fueling Components. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 3 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
NSN4730-00-051-3426
Primary Part Number633-B
Item NameCoupling Half,quick Disconnect
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerOpw Fueling Components Inc. Div Opw Fueling Components
StatusACTIVE
Quick Disconnect MethodCAM-LOCKING ALL ENDS
Style DesignatorMALE COUPLING HALF
Nominal Thread Size6.000 INCHES ALL ENDS IN
MaterialALUMINUM BODY
Nondefinitive Spec/std Data7 TYPE AND 1 CLASS AND 6 SIZE
Thread Series DesignatorNPT ALL ENDS
Specification/standard Data81349-MIL-C-27487 GOVERNMENT SPECIFICATION
Connection StylePLAIN ALL ENDS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
4730-00-088-9285 INTERCHANGEABLE
Coupling Half,quick Disconnect
4730-00-203-1010 INTERCHANGEABLE
Coupling Half,quick Disconnect
4730-00-491-0032 INTERCHANGEABLE
Coupling Half,quick Disconnect
4730-00-649-9118 INTERCHANGEABLE
Coupling Half,quick Disconnect
Cross-Reference Index
Part NumberManufacturer
633-B Opw Fueling Components Inc. Div Opw Fueling Components (USA)
633-B-0190 Pride Cast Metals, Inc. (USA)
633B-AL60 Pride Cast Metals, Inc. (USA)
633-B 6IN-AL Opw Fueling Components Inc. Div Opw Fueling Components (USA)
MS27026-19 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
633-B-0190 Opw Fueling Components Inc. Div Opw Fueling Components (USA)
Related Parts
4730-00-088-9285INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
4730-00-203-1010INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
4730-00-491-0032INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
4730-00-649-9118INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT

Frequently Asked Questions

What is NSN 4730-00-051-3426?

NSN 4730-00-051-3426 is a Coupling Half,quick Disconnect, manufactured by Opw Fueling Components Inc. Div Opw Fueling Components, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-051-3426?

NSN 4730-00-051-3426 has 6 cross-referenced part numbers: 633-B (Opw Fueling Components Inc. Div Opw Fueling Components), 633-B-0190 (Pride Cast Metals, Inc.), 633B-AL60 (Pride Cast Metals, Inc.), 633-B 6IN-AL (Opw Fueling Components Inc. Div Opw Fueling Components), MS27026-19 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M) and 1 more.

What NSN replaces 4730-00-051-3426?

There are 4 known substitutes for 4730-00-051-3426: 4730-00-088-9285, 4730-00-203-1010, 4730-00-491-0032 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 633-B?

Key specifications for 633-B: Quick Disconnect Method: CAM-LOCKING ALL ENDS; Style Designator: MALE COUPLING HALF; Nominal Thread Size: 6.000 INCHES ALL ENDS IN; Material: ALUMINUM BODY. 8 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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