PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9100146Diaphragm,valve,flat

Lincoln Electric Co the Harris Calorific Div · NSN 4820-01-420-3999 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-420-3999 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-420-3999. Primary manufacturer part number: 9100146.
Features
  • Diaphragm,valve,flat — FSC 4820
  • 2 verified cross-references
  • Primary manufacturer: Lincoln Electric Co the Harris Calorific Div
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Diaphragm,valve,flat, cataloged under National Stock Number 4820-01-420-3999, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Lincoln Electric Co the Harris Calorific Div. This item has 2 commercial cross-references from 1 manufacturer, 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
NSN4820-01-420-3999
Primary Part Number9100146
Item NameDiaphragm,valve,flat
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLincoln Electric Co the Harris Calorific Div
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
3110-00-100-8545 INTERCHANGEABLE
Bearing,ball,thrust
5910-00-195-0057 INTERCHANGEABLE
Capacitor,fixed,mica Dielectric
5930-00-259-7971 INTERCHANGEABLE
Switch,thermostatic
6680-00-394-7338B-25 INTERCHANGEABLE
Extension Rod
Schulze Mfg., Inc.
5120-00-568-4742 INTERCHANGEABLE
Screwdriver,torque
5925-00-644-5546B25.0 INTERCHANGEABLE
Thermal Release,circuit Breaker
Schneider Electric Usa, Inc.
5120-00-912-5452B-25 INTERCHANGEABLE
Screwdriver,flat Tip
Ngk Metals Corporation Dba N G K Berylco
6660-00-936-8007B25 INTERCHANGEABLE
Blower Assembly
Bud Industries Inc
3455-00-953-1273 INTERCHANGEABLE
File,rotary
5331-01-345-0052 INTERCHANGEABLE
O-Ring
Cross-Reference Index
Part NumberManufacturer
B-25 Lincoln Electric Co the Harris Calorific Div (USA)
9100146 PRIMARY Lincoln Electric Co the Harris Calorific Div (USA)
Related Parts
3110-00-100-8545INTERCHANGEABLE
BEARING,BALL,THRUST
5910-00-195-0057INTERCHANGEABLE
CAPACITOR,FIXED,MICA DIELECTRIC
5930-00-259-7971INTERCHANGEABLE
SWITCH,THERMOSTATIC
6680-00-394-7338INTERCHANGEABLE
EXTENSION ROD
B-25
5120-00-568-4742INTERCHANGEABLE
SCREWDRIVER,TORQUE
5925-00-644-5546INTERCHANGEABLE
THERMAL RELEASE,CIRCUIT BREAKER
B25.0
5120-00-912-5452INTERCHANGEABLE
SCREWDRIVER,FLAT TIP
B-25
6660-00-936-8007INTERCHANGEABLE
BLOWER ASSEMBLY
B25
3455-00-953-1273INTERCHANGEABLE
FILE,ROTARY
5331-01-345-0052INTERCHANGEABLE
O-RING
7930-01-381-3477INTERCHANGEABLE
CLEANING COMPOUND,RUG AND UPHOLS

Frequently Asked Questions

What is NSN 4820-01-420-3999?

NSN 4820-01-420-3999 is a Diaphragm,valve,flat, manufactured by Lincoln Electric Co the Harris Calorific Div, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-420-3999?

NSN 4820-01-420-3999 has 2 cross-referenced part numbers: B-25 (Lincoln Electric Co the Harris Calorific Div), 9100146 (Lincoln Electric Co the Harris Calorific Div).

What NSN replaces 4820-01-420-3999?

There are 11 known substitutes for 4820-01-420-3999: 3110-00-100-8545, 5910-00-195-0057, 5930-00-259-7971 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 9100146?

Key specifications for 9100146: Special Features: USED ON MODEL 25 SINGLE STAGE REGULATOR. 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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