PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

39953FDiaphragm,valve,flat

Griswold Industries Dba Cla-Val Co · NSN 4820-00-868-7232 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-868-7232 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-868-7232. Primary manufacturer part number: 39953F.
Features
  • Diaphragm,valve,flat — FSC 4820
  • Bolt Hole Quantity: 4
  • Material Thickness: 0.051 INCHES NOMINAL IN
  • Style Designator: FLAT
  • Outside Corner Radius: 0.375 INCHES NOMINAL IN
  • Hole Diameter: 0.400 INCHES NOMINAL IN
  • Center to Center Distance Between Bolt Holes Along Length: 3.015 INCHES NOMINAL IN
  • Center to Center Distance Between Bolt Holes Along Width: 2.250 INCHES NOMINAL IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Rubber and Plastic Polyamide Nylon construction
General Description

The Diaphragm,valve,flat, cataloged under National Stock Number 4820-00-868-7232, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Griswold Industries Dba Cla-Val Co. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-868-7232
Primary Part Number39953F
Item NameDiaphragm,valve,flat
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerGriswold Industries Dba Cla-Val Co
StatusACTIVE
Bolt Hole Quantity4
Material Thickness0.051 INCHES NOMINAL IN
Style DesignatorFLAT
Outside Corner Radius0.375 INCHES NOMINAL IN
Hole Diameter0.400 INCHES NOMINAL IN
Center to Center Distance Between Bolt Holes Along Length3.015 INCHES NOMINAL IN
Center to Center Distance Between Bolt Holes Along Width2.250 INCHES NOMINAL IN
MaterialRUBBER AND PLASTIC POLYAMIDE NYLON
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5950-00-034-0947SMC422657 INTERCHANGEABLE
Transformer,audio Frequency
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5315-00-352-1909637899 INTERCHANGEABLE
Pin,cam Anchor
Am General Llc
Cross-Reference Index
Part NumberManufacturer
39953F PRIMARY Griswold Industries Dba Cla-Val Co (USA)
39953 Griswold Industries Dba Cla-Val Co (USA)
Related Parts
5950-00-034-0947INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
SMC422657
5315-00-352-1909INTERCHANGEABLE
PIN,CAM ANCHOR
637899

Frequently Asked Questions

What is NSN 4820-00-868-7232?

NSN 4820-00-868-7232 is a Diaphragm,valve,flat, manufactured by Griswold Industries Dba Cla-Val Co, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-868-7232?

NSN 4820-00-868-7232 has 2 cross-referenced part numbers: 39953F (Griswold Industries Dba Cla-Val Co), 39953 (Griswold Industries Dba Cla-Val Co).

What NSN replaces 4820-00-868-7232?

There are 2 known substitutes for 4820-00-868-7232: 5950-00-034-0947, 5315-00-352-1909. Verify interchangeability with system specifications before substitution.

What are the specifications of 39953F?

Key specifications for 39953F: Bolt Hole Quantity: 4; Material Thickness: 0.051 INCHES NOMINAL IN; Style Designator: FLAT; Outside Corner Radius: 0.375 INCHES NOMINAL IN. 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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