PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SMS-66714Seat,valve

Salem Manufacturing & Sales Inc Div Salem Manufacturing and Sales Inc · NSN 4820-01-063-3768 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-063-3768 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-063-3768. Primary manufacturer part number: SMS-66714.
Features
  • Seat,valve — FSC 4820
  • Nominal Thread Size: 1.500 INCHES SINGLE THREADED PORTION IN
  • Material: COPPER ALLOY OVERALL
  • Thread Series Designator: UNF SINGLE THREADED PORTION
  • Style Designator: THREADED FLANGED
  • Thread Class: 2A SINGLE THREADED PORTION A
  • Seating Surface Shape: RADIAL
  • Under Flange Height: 0.812 INCHES NOMINAL IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-063-3768, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Salem Manufacturing & Sales Inc Div Salem Manufacturing and Sales Inc. Government technical data includes 12 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-063-3768
Primary Part NumberSMS-66714
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerSalem Manufacturing & Sales Inc Div Salem Manufacturing and Sales Inc
StatusACTIVE
Nominal Thread Size1.500 INCHES SINGLE THREADED PORTION IN
MaterialCOPPER ALLOY OVERALL
Thread Series DesignatorUNF SINGLE THREADED PORTION
Style DesignatorTHREADED FLANGED
Thread Class2A SINGLE THREADED PORTION A
Seating Surface ShapeRADIAL
Under Flange Height0.812 INCHES NOMINAL IN
Flange Diameter1.500 INCHES NOMINAL IN
Flange Seat to Disk End Height0.594 INCHES NOMINAL IN
Body Inside Diameter0.515 INCHES NOMINAL IN
Thread Length0.520 INCHES NOMINAL SINGLE THREADED PORTION IN
Seat Radius0.062 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4030-00-684-4060 INTERCHANGEABLE
Terminal,rope,swaging
7490-00-972-6330 INTERCHANGEABLE
Link
5995-01-131-87965033T68P02 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Ducommun Labarge Technologies, Inc.
5307-01-183-391766714 INTERCHANGEABLE
Stud
Parker Hannifin Corporation Div Hydraulic Systems Division
4730-01-436-843466714 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Mcneil Ohio Corp
Cross-Reference Index
Part NumberManufacturer
R-95780PC20 Kidde-Fenwal, Llc (USA)
66714 Kidde-Fenwal, Llc (USA)
SMS-66714 PRIMARY Salem Manufacturing & Sales Inc Div Salem Manufacturing and Sales Inc (USA)
Related Parts
4030-00-684-4060INTERCHANGEABLE
TERMINAL,ROPE,SWAGING
7490-00-972-6330INTERCHANGEABLE
LINK
5995-01-131-8796INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
5033T68P02
5307-01-183-3917INTERCHANGEABLE
STUD
66714
4730-01-436-8434INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
66714

Frequently Asked Questions

What is NSN 4820-01-063-3768?

NSN 4820-01-063-3768 is a Seat,valve, manufactured by Salem Manufacturing & Sales Inc Div Salem Manufacturing and Sales Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-063-3768?

NSN 4820-01-063-3768 has 3 cross-referenced part numbers: R-95780PC20 (Kidde-Fenwal, Llc), 66714 (Kidde-Fenwal, Llc), SMS-66714 (Salem Manufacturing & Sales Inc Div Salem Manufacturing and Sales Inc).

What NSN replaces 4820-01-063-3768?

There are 5 known substitutes for 4820-01-063-3768: 4030-00-684-4060, 7490-00-972-6330, 5995-01-131-8796 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SMS-66714?

Key specifications for SMS-66714: Nominal Thread Size: 1.500 INCHES SINGLE THREADED PORTION IN; Material: COPPER ALLOY OVERALL; Thread Series Designator: UNF SINGLE THREADED PORTION; Style Designator: THREADED FLANGED. 12 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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