PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

K9500A1Valve,expansion

Leathercraft Co the · NSN 4820-01-540-8552 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-540-8552 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-540-8552. Primary manufacturer part number: K9500A1.
Features
  • Valve,expansion — FSC 4820
  • 2 verified cross-references
  • Primary manufacturer: Leathercraft Co the
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,expansion, cataloged under National Stock Number 4820-01-540-8552, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Leathercraft Co the. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-540-8552
Primary Part NumberK9500A1
Item NameValve,expansion
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLeathercraft Co the
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5330-00-202-2485 INTERCHANGEABLE
Gasket
6810-00-262-8576 INTERCHANGEABLE
Arsenic Trioxide
5360-00-290-9126 INTERCHANGEABLE
Spring,helical,compression
4820-00-396-2256K9000S1A INTERCHANGEABLE
Cock,drain
Parker-Hannifin Corporation Dba Pneutronics
6105-00-408-9941A59 INTERCHANGEABLE
Motor-Tachometer Generator
Mpc Products Corporation Dba Woodward Mpc, Inc.
5999-00-463-9640 INTERCHANGEABLE
Heater,thermal Release
3030-00-917-9844A59 INTERCHANGEABLE
Belt,v
Gates Corporation
3455-01-029-84201-1741-1000 INTERCHANGEABLE
Cutter,milling,end
New York Twist Drill Inc
5962-01-102-7604 INTERCHANGEABLE
Microcircuit,linear
5360-01-141-2480510031-0107 INTERCHANGEABLE
Spring,valve
Badger Meter Inc Industrial Products Div
Cross-Reference Index
Part NumberManufacturer
K9500A1 PRIMARY Leathercraft Co the (USA)
A59 Beechcraft Corporation Dba Textron Aviation (USA)
Related Parts
5330-00-202-2485INTERCHANGEABLE
GASKET
6810-00-262-8576INTERCHANGEABLE
ARSENIC TRIOXIDE
5360-00-290-9126INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
4820-00-396-2256INTERCHANGEABLE
COCK,DRAIN
K9000S1A
6105-00-408-9941INTERCHANGEABLE
MOTOR-TACHOMETER GENERATOR
A59
5999-00-463-9640INTERCHANGEABLE
HEATER,THERMAL RELEASE
3030-00-917-9844INTERCHANGEABLE
BELT,V
A59
3455-01-029-8420INTERCHANGEABLE
CUTTER,MILLING,END
1-1741-1000
5962-01-102-7604INTERCHANGEABLE
MICROCIRCUIT,LINEAR
5360-01-141-2480INTERCHANGEABLE
SPRING,VALVE
510031-0107
7690-01-263-6281INTERCHANGEABLE
LABEL
A-59

Frequently Asked Questions

What is NSN 4820-01-540-8552?

NSN 4820-01-540-8552 is a Valve,expansion, manufactured by Leathercraft Co the, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-540-8552?

NSN 4820-01-540-8552 has 2 cross-referenced part numbers: K9500A1 (Leathercraft Co the), A59 (Beechcraft Corporation Dba Textron Aviation).

What NSN replaces 4820-01-540-8552?

There are 11 known substitutes for 4820-01-540-8552: 5330-00-202-2485, 6810-00-262-8576, 5360-00-290-9126 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of K9500A1?

Key specifications for K9500A1: End Item Identification: BEECH - KING AIRCRAFT. 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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