PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M303-4Stem,valve

Henry Technologies, Inc. · NSN 4820-00-757-2948 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-757-2948 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-757-2948. Primary manufacturer part number: M303-4.
Features
  • Stem,valve — FSC 4820
  • General Characteristics Item Description: TELLURIUM LEADED 1113 OR STEEL M8B1113,ZINC PLATE 0.0002 TO 0.0003,CLEAR CHROMATE FINISH,5.062 IN. LG,1.000 IN. OVERALL DIA,0.438 IN. BODY DIA,0.437 IN. SHANK DIA IN
  • 1 verified cross-reference
  • Primary manufacturer: Henry Technologies, Inc.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Stem,valve, cataloged under National Stock Number 4820-00-757-2948, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Henry Technologies, Inc.. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-757-2948
Primary Part NumberM303-4
Item NameStem,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHenry Technologies, Inc.
StatusACTIVE
General Characteristics Item DescriptionTELLURIUM LEADED 1113 OR STEEL M8B1113,ZINC PLATE 0.0002 TO 0.0003,CLEAR CHROMATE FINISH,5.062 IN. LG,1.000 IN. OVERALL DIA,0.438 IN. BODY DIA,0.437 IN. SHANK DIA IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6145-01-013-40681319C INTERCHANGEABLE
Cable,special Purpose,electrical
Belden, Inc.
Cross-Reference Index
Part NumberManufacturer
M303-4 Henry Technologies, Inc. (USA)
Related Parts
6145-01-013-4068INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
1319C

Frequently Asked Questions

What is NSN 4820-00-757-2948?

NSN 4820-00-757-2948 is a Stem,valve, manufactured by Henry Technologies, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-757-2948?

NSN 4820-00-757-2948 has 1 cross-referenced part number: M303-4 (Henry Technologies, Inc.).

What NSN replaces 4820-00-757-2948?

There is 1 known substitute for 4820-00-757-2948: 6145-01-013-4068. Verify interchangeability with system specifications before substitution.

What are the specifications of M303-4?

Key specifications for M303-4: General Characteristics Item Description: TELLURIUM LEADED 1113 OR STEEL M8B1113,ZINC PLATE 0.0002 TO 0.0003,CLEAR CHROMATE FINISH,5.062 IN. LG,1.000 IN. OVERALL DIA,0.438 IN. BODY DIA,0.437 IN. SHANK DIA IN. 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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