PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NB3-4Seat,valve

Mcc Holdings, Inc. Dba Crane Valve North America Div Crane Chempharma & Energy · NSN 4820-00-136-8642 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-136-8642 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-136-8642. Primary manufacturer part number: NB3-4.
Features
  • Seat,valve — FSC 4820
  • Body Outside Diameter: 4.077 INCHES NOMINAL IN
  • Seating Surface Shape: ANGULAR
  • Material: RUBBER FACE
  • Material: PLASTIC PHENOLIC BODY
  • Style Designator: PLAIN
  • 1 verified cross-reference
  • Primary manufacturer: Mcc Holdings, Inc. Dba Crane Valve North America Div Crane Chempharma & Energy
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Rubber Face construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-136-8642, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Mcc Holdings, Inc. Dba Crane Valve North America Div Crane Chempharma & Energy. Government technical data includes 5 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
NSN4820-00-136-8642
Primary Part NumberNB3-4
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMcc Holdings, Inc. Dba Crane Valve North America Div Crane Chempharma & Energy
StatusACTIVE
Body Outside Diameter4.077 INCHES NOMINAL IN
Seating Surface ShapeANGULAR
MaterialRUBBER FACE
MaterialPLASTIC PHENOLIC BODY
Style DesignatorPLAIN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3110-00-902-3752NB-34-OH INTERCHANGEABLE
Bearing,roller,needle
Timken Aerospace, Inc Dba Torrington Product
Cross-Reference Index
Part NumberManufacturer
NB3-4 Mcc Holdings, Inc. Dba Crane Valve North America Div Crane Chempharma & Energy (USA)
Related Parts
3110-00-902-3752INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
NB-34-OH

Frequently Asked Questions

What is NSN 4820-00-136-8642?

NSN 4820-00-136-8642 is a Seat,valve, manufactured by Mcc Holdings, Inc. Dba Crane Valve North America Div Crane Chempharma & Energy, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-136-8642?

NSN 4820-00-136-8642 has 1 cross-referenced part number: NB3-4 (Mcc Holdings, Inc. Dba Crane Valve North America Div Crane Chempharma & Energy).

What NSN replaces 4820-00-136-8642?

There is 1 known substitute for 4820-00-136-8642: 3110-00-902-3752. Verify interchangeability with system specifications before substitution.

What are the specifications of NB3-4?

Key specifications for NB3-4: Body Outside Diameter: 4.077 INCHES NOMINAL IN; Seating Surface Shape: ANGULAR; Material: RUBBER FACE; Material: PLASTIC PHENOLIC BODY. 6 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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