PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A391F001Glass,liquid Sight Indicator,fla

Emerson Electric Co Dba Brooks Instrument Division · NSN 6680-00-828-7240 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-828-7240 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-828-7240. Primary manufacturer part number: A391F001.
Features
  • Glass,liquid Sight Indicator,fla — FSC 6680
  • Gasket: NOT INCLUDED
  • Overall Diameter: 3.188 INCHES NOMINAL IN
  • Overall Thickness: 0.500 INCHES NOMINAL IN
  • Design Type: PLAIN
  • Gage Rated Pressure: 300.0 POUNDS PER SQUARE INCH LBS
  • Mica Shield: NOT PROVIDED
  • 5 verified cross-references
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Glass,liquid Sight Indicator,fla, cataloged under National Stock Number 6680-00-828-7240, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Emerson Electric Co Dba Brooks Instrument Division. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6680-00-828-7240
Primary Part NumberA391F001
Item NameGlass,liquid Sight Indicator,fla
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerEmerson Electric Co Dba Brooks Instrument Division
StatusACTIVE
GasketNOT INCLUDED
Overall Diameter3.188 INCHES NOMINAL IN
Overall Thickness0.500 INCHES NOMINAL IN
Design TypePLAIN
Gage Rated Pressure300.0 POUNDS PER SQUARE INCH LBS
Mica ShieldNOT PROVIDED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5310-00-291-594440282 INTERCHANGEABLE
Washer,flat
Napco International Llc Dba Napco International Inc
3020-01-088-7781SM-B-764969 INTERCHANGEABLE
Sprocket Wheel
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4140-01-171-958040282 INTERCHANGEABLE
Guard,fan Impeller
Hamilton Sundstrand Corporation
3120-01-233-1983 INTERCHANGEABLE
Bearing,sleeve
3020-01-271-360640282 INTERCHANGEABLE
Gear,worm Wheel
Lake Shore Systems, Inc.
5340-01-493-371440282 INTERCHANGEABLE
Plug Antibacklash
Moog Inc. Dba Ampac-Isp Corp
4810-01-540-288940282-SV INTERCHANGEABLE
Valve,solenoid
Hdt Expeditionary Systems Inc
Cross-Reference Index
Part NumberManufacturer
A391F001 Emerson Electric Co Dba Brooks Instrument Division (USA)
A40-28-2 Emerson Electric Co Dba Brooks Instrument Division (USA)
A391F001WCA Brooks Instrument Llc (USA)
40-28-2 Emerson Electric Co Dba Brooks Instrument Division (USA)
A391F001WCA Emerson Electric Co Dba Brooks Instrument Division (USA)
Related Parts
5310-00-291-5944INTERCHANGEABLE
WASHER,FLAT
40282
3020-01-088-7781INTERCHANGEABLE
SPROCKET WHEEL
SM-B-764969
4140-01-171-9580INTERCHANGEABLE
GUARD,FAN IMPELLER
40282
3120-01-233-1983INTERCHANGEABLE
BEARING,SLEEVE
3020-01-271-3606INTERCHANGEABLE
GEAR,WORM WHEEL
40282
5340-01-493-3714INTERCHANGEABLE
PLUG ANTIBACKLASH
40282
4810-01-540-2889INTERCHANGEABLE
VALVE,SOLENOID
40282-SV

Frequently Asked Questions

What is NSN 6680-00-828-7240?

NSN 6680-00-828-7240 is a Glass,liquid Sight Indicator,fla, manufactured by Emerson Electric Co Dba Brooks Instrument Division, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-00-828-7240?

NSN 6680-00-828-7240 has 5 cross-referenced part numbers: A391F001 (Emerson Electric Co Dba Brooks Instrument Division), A40-28-2 (Emerson Electric Co Dba Brooks Instrument Division), A391F001WCA (Brooks Instrument Llc), 40-28-2 (Emerson Electric Co Dba Brooks Instrument Division), A391F001WCA (Emerson Electric Co Dba Brooks Instrument Division).

What NSN replaces 6680-00-828-7240?

There are 7 known substitutes for 6680-00-828-7240: 5310-00-291-5944, 3020-01-088-7781, 4140-01-171-9580 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A391F001?

Key specifications for A391F001: Gasket: NOT INCLUDED; Overall Diameter: 3.188 INCHES NOMINAL IN; Overall Thickness: 0.500 INCHES NOMINAL IN; Design Type: PLAIN. 7 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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