PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

923Diaphragm,valve,flat

Trac Regulator Co., Inc. Dba Trac Regulator Co Inc · NSN 4820-01-168-2162 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-168-2162 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-168-2162. Primary manufacturer part number: 923.
Features
  • Diaphragm,valve,flat — FSC 4820
  • Hole Diameter: 0.295 INCHES NOMINAL IN
  • Material: RUBBER CHLOROPRENE CLASS CR
  • Material Thickness: 0.132 INCHES NOMINAL IN
  • Center Hole Diameter: 0.230 INCHES NOMINAL IN
  • Bolt Hole Quantity: 8
  • Outside Diameter: 5.000 INCHES NOMINAL IN
  • Bolt Circle Diameter: 4.375 INCHES NOMINAL IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Rubber Chloroprene Class Cr construction
General Description

The Diaphragm,valve,flat, cataloged under National Stock Number 4820-01-168-2162, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Trac Regulator Co., Inc. Dba Trac Regulator Co Inc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-168-2162
Primary Part Number923
Item NameDiaphragm,valve,flat
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTrac Regulator Co., Inc. Dba Trac Regulator Co Inc
StatusACTIVE
Hole Diameter0.295 INCHES NOMINAL IN
MaterialRUBBER CHLOROPRENE CLASS CR
Material Thickness0.132 INCHES NOMINAL IN
Center Hole Diameter0.230 INCHES NOMINAL IN
Bolt Hole Quantity8
Outside Diameter5.000 INCHES NOMINAL IN
Bolt Circle Diameter4.375 INCHES NOMINAL IN
Style DesignatorFLAT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5995-00-256-010292300 INTERCHANGEABLE
Case,cable Assembly
The Skydyne Company
2530-00-326-2523 INTERCHANGEABLE
Actuator,side and Side
4820-01-168-1949930-02 INTERCHANGEABLE
Seat,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-168-195640398-901 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-168-2161931-00 INTERCHANGEABLE
Disk,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4920-01-300-197092300 INTERCHANGEABLE
Test Program Set
Textron Systems Corporation Dba Textron Systems Corp
Cross-Reference Index
Part NumberManufacturer
40398-09 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
923-00 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
923 PRIMARY Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
40398-09 FIND 7 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
Related Parts
5995-00-256-0102INTERCHANGEABLE
CASE,CABLE ASSEMBLY
92300
2530-00-326-2523INTERCHANGEABLE
ACTUATOR,SIDE AND SIDE
4820-01-168-1949INTERCHANGEABLE
SEAT,VALVE
930-02
4820-01-168-1956INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
40398-901
4820-01-168-2161INTERCHANGEABLE
DISK,VALVE
931-00
4920-01-300-1970INTERCHANGEABLE
TEST PROGRAM SET
92300

Frequently Asked Questions

What is NSN 4820-01-168-2162?

NSN 4820-01-168-2162 is a Diaphragm,valve,flat, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-168-2162?

NSN 4820-01-168-2162 has 4 cross-referenced part numbers: 40398-09 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 923-00 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 923 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40398-09 FIND 7 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).

What NSN replaces 4820-01-168-2162?

There are 6 known substitutes for 4820-01-168-2162: 5995-00-256-0102, 2530-00-326-2523, 4820-01-168-1949 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 923?

Key specifications for 923: Hole Diameter: 0.295 INCHES NOMINAL IN; Material: RUBBER CHLOROPRENE CLASS CR; Material Thickness: 0.132 INCHES NOMINAL IN; Center Hole Diameter: 0.230 INCHES NOMINAL IN. 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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