PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4768-G501Meter,flow Rate Indicating

Howell Laboratories Inc Dba Howell Laboratories Inc · NSN 6680-01-135-9805 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-01-135-9805 — this item is cataloged by the U.S. Government under National Stock Number 6680-01-135-9805. Primary manufacturer part number: 4768-G501.
Features
  • Meter,flow Rate Indicating — FSC 6680
  • Material: GLASS TUBE
  • Design Type: CASE
  • Accessory Components and Quantity: INTEGRAL THROTTLE VALVE ON OUTLET
  • Unit Type: MOUNTED
  • Inlet Connection Device Type: STATIONARY
  • Integral Heat Source: NOT INCLUDED
  • Integral Pulsation Dampener: NOT INCLUDED
Applications
  • Applications requiring Glass Tube construction
General Description

The Meter,flow Rate Indicating, cataloged under National Stock Number 6680-01-135-9805, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Howell Laboratories Inc Dba Howell Laboratories Inc. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6680-01-135-9805
Primary Part Number4768-G501
Item NameMeter,flow Rate Indicating
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerHowell Laboratories Inc Dba Howell Laboratories Inc
StatusACTIVE
MaterialGLASS TUBE
Design TypeCASE
Accessory Components and QuantityINTEGRAL THROTTLE VALVE ON OUTLET
Unit TypeMOUNTED
Inlet Connection Device TypeSTATIONARY
Integral Heat SourceNOT INCLUDED
Integral Pulsation DampenerNOT INCLUDED
Maximum Working Pressure250.0 POUNDS PER SQUARE INCH (PSI) LBS
BaseNOT INCLUDED
Spinning FloatNOT INCLUDED
Alarm SignalNOT INCLUDED
Mounting MethodDIRECT LINE
Carrying HandleNOT INCLUDED
Outlet Connection Device TypeSTATIONARY
Inlet Connection Position for Which DesignedHORIZONTAL
Outlet Connection Position for Which DesignedHORIZONTAL
Float TypeFREE
Inlet Connection Size0.250 IN. NPT IN
Dial Scale Smallest IncrementANY ACCEPTABLE
Dial Scale Marking Range+0.00 TO 2.57
Outlet Connection Size0.250 IN. NPT IN
Metering Tube Quantity1
Dial Scale Reference PointerNOT INCLUDED
MaterialSTEEL CORROSION RESISTING FLOAT
Unable to DecodeUNABLE TO DECODE
Inlet Connection TypeTHREADED
Integral Relief ValveNOT INCLUDED
Meter TypeFLOAT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
2040-00-123-175752-0152-03 INTERCHANGEABLE
Rudder,marine
North American Marine Jet, Inc
5330-00-447-6105S7P834 INTERCHANGEABLE
Gasket
Stillman Seal Corporation Div Stillman Seal Corperation
5910-00-931-98174768 INTERCHANGEABLE
Capacitor,fixed,electrolytic
Hoyt Corporation
4940-01-040-7193 INTERCHANGEABLE
Gun,air Blow
5325-01-133-09404768 INTERCHANGEABLE
Ring,retaining
American Ring Mfg
6680-01-207-06414768-G502 INTERCHANGEABLE
Meter,flow Rate Indicating
Howell Laboratories Inc Dba Howell Laboratories Inc
Cross-Reference Index
Part NumberManufacturer
4768-G501 PRIMARY Howell Laboratories Inc Dba Howell Laboratories Inc (USA)
4768 Howell Laboratories Inc Dba Howell Laboratories Inc (USA)
10A3137M Fischer and Porter Co (USA)
Related Parts
2040-00-123-1757INTERCHANGEABLE
RUDDER,MARINE
52-0152-03
5330-00-447-6105INTERCHANGEABLE
GASKET
S7P834
5910-00-931-9817INTERCHANGEABLE
CAPACITOR,FIXED,ELECTROLYTIC
4768
4940-01-040-7193INTERCHANGEABLE
GUN,AIR BLOW
5325-01-133-0940INTERCHANGEABLE
RING,RETAINING
4768
6680-01-207-0641INTERCHANGEABLE
METER,FLOW RATE INDICATING
4768-G502

Frequently Asked Questions

What is NSN 6680-01-135-9805?

NSN 6680-01-135-9805 is a Meter,flow Rate Indicating, manufactured by Howell Laboratories Inc Dba Howell Laboratories Inc, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-01-135-9805?

NSN 6680-01-135-9805 has 3 cross-referenced part numbers: 4768-G501 (Howell Laboratories Inc Dba Howell Laboratories Inc), 4768 (Howell Laboratories Inc Dba Howell Laboratories Inc), 10A3137M (Fischer and Porter Co).

What NSN replaces 6680-01-135-9805?

There are 6 known substitutes for 6680-01-135-9805: 2040-00-123-1757, 5330-00-447-6105, 5910-00-931-9817 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4768-G501?

Key specifications for 4768-G501: Material: GLASS TUBE; Design Type: CASE; Accessory Components and Quantity: INTEGRAL THROTTLE VALVE ON OUTLET; Unit Type: MOUNTED. 30 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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