PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

28928Diaphragm,pump,special Shaped

Walchem Corp · NSN 4310-01-337-2120 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-01-337-2120 — this item is cataloged by the U.S. Government under National Stock Number 4310-01-337-2120. Primary manufacturer part number: 28928.
Features
  • Diaphragm,pump,special Shaped — FSC 4310
  • Material: PLASTIC TETRAFLUOROETHYLENE
  • 2 verified cross-references
  • Primary manufacturer: Walchem Corp
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
  • Applications requiring Plastic Tetrafluoroethylene construction
General Description

The Diaphragm,pump,special Shaped, cataloged under National Stock Number 4310-01-337-2120, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Walchem Corp. Government technical data includes 1 verified specification, 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4310-01-337-2120
Primary Part Number28928
Item NameDiaphragm,pump,special Shaped
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerWalchem Corp
StatusACTIVE
MaterialPLASTIC TETRAFLUOROETHYLENE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
6620-00-605-838623590 INTERCHANGEABLE
Jackscrew,carriage
Honeywell International, Inc Div Aerospace-Tucson
5360-01-011-675423590 INTERCHANGEABLE
Spring
Clayton Manufacturing Company
4810-01-068-388628928 INTERCHANGEABLE
Sleeve,directional Control Linea
Moog Inc. Dba Ampac-Isp Corp
5950-01-080-362063120 INTERCHANGEABLE
Reactor
L3harris Technologies, Inc Div Space & Airborne Systems
5340-01-390-8473 INTERCHANGEABLE
Cover,access
Cross-Reference Index
Part NumberManufacturer
28928 PRIMARY Walchem Corp (USA)
23590 Walchem Corp (USA)
Related Parts
6620-00-605-8386INTERCHANGEABLE
JACKSCREW,CARRIAGE
23590
5360-01-011-6754INTERCHANGEABLE
SPRING
23590
4810-01-068-3886INTERCHANGEABLE
SLEEVE,DIRECTIONAL CONTROL LINEA
28928
5950-01-080-3620INTERCHANGEABLE
REACTOR
63120
5340-01-390-8473INTERCHANGEABLE
COVER,ACCESS

Frequently Asked Questions

What is NSN 4310-01-337-2120?

NSN 4310-01-337-2120 is a Diaphragm,pump,special Shaped, manufactured by Walchem Corp, classified under FSC 4310 (No Item Name Available). Status: active.

What are the part numbers for NSN 4310-01-337-2120?

NSN 4310-01-337-2120 has 2 cross-referenced part numbers: 28928 (Walchem Corp), 23590 (Walchem Corp).

What NSN replaces 4310-01-337-2120?

There are 5 known substitutes for 4310-01-337-2120: 6620-00-605-8386, 5360-01-011-6754, 4810-01-068-3886 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 28928?

Key specifications for 28928: Material: PLASTIC TETRAFLUOROETHYLENE. 1 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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