PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40-637-1Indicator,rate of Flow

Meggitt (new Hampshire), Inc · NSN 6620-01-142-7996 · FSC 6620 · No Item Name Available
Verified by PartsTable
NSN 6620-01-142-7996 — this item is cataloged by the U.S. Government under National Stock Number 6620-01-142-7996. Primary manufacturer part number: 40-637-1.
Features
  • Indicator,rate of Flow — FSC 6620
  • Display Digit Quantity: 5
  • Usage Design: RATE OF FLOW
  • Electrical Connection Quantity: 1
  • Width: 1.750 INCHES NOMINAL IN
  • Individual Marking: FUEL FLOW PPH
  • Current Type: AC
  • Presentation Type: TOTALIZING COUNTER
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Indicator,rate of Flow, cataloged under National Stock Number 6620-01-142-7996, is classified within Federal Supply Class 6620 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Meggitt (new Hampshire), Inc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6620-01-142-7996
Primary Part Number40-637-1
Item NameIndicator,rate of Flow
FSC / FSG6620 / 66 — No Item Name Available
ManufacturerMeggitt (new Hampshire), Inc
StatusACTIVE
Display Digit Quantity5
Usage DesignRATE OF FLOW
Electrical Connection Quantity1
Width1.750 INCHES NOMINAL IN
Individual MarkingFUEL FLOW PPH
Current TypeAC
Presentation TypeTOTALIZING COUNTER
AC Voltage Rating115.0 VOLTS NOMINAL AND 5.0 VOLTS NOMINAL
Length7.780 INCHES NOMINAL IN
Height1.400 INCHES NOMINAL IN
Frequency Rating400.0 HERTZ NOMINAL
Electrical Connection Identifying NumberM83723/75R1212N PLUG
PhaseSINGLE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5360-00-526-9617 INTERCHANGEABLE
Spring,helical,compression
6620-01-141-1144266-025-001 INTERCHANGEABLE
Indicator,rate of Flow
Parker-Hannifin Corporation Dba Service and Support Operation Div Services and Support Operations
5315-01-602-701240637-1 INTERCHANGEABLE
Pin,straight,headless
United States Department of the Navy Dba Naval Surface Warfare Center Panama City
Cross-Reference Index
Part NumberManufacturer
40-637-1 PRIMARY Meggitt (new Hampshire), Inc (USA)
16VF024-1 Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company (USA)
Related Parts
5360-00-526-9617INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
6620-01-141-1144INTERCHANGEABLE
INDICATOR,RATE OF FLOW
266-025-001
5315-01-602-7012INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
40637-1

Frequently Asked Questions

What is NSN 6620-01-142-7996?

NSN 6620-01-142-7996 is a Indicator,rate of Flow, manufactured by Meggitt (new Hampshire), Inc, classified under FSC 6620 (No Item Name Available). Status: active.

What are the part numbers for NSN 6620-01-142-7996?

NSN 6620-01-142-7996 has 2 cross-referenced part numbers: 40-637-1 (Meggitt (new Hampshire), Inc), 16VF024-1 (Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company).

What NSN replaces 6620-01-142-7996?

There are 3 known substitutes for 6620-01-142-7996: 5360-00-526-9617, 6620-01-141-1144, 5315-01-602-7012. Verify interchangeability with system specifications before substitution.

What are the specifications of 40-637-1?

Key specifications for 40-637-1: Display Digit Quantity: 5; Usage Design: RATE OF FLOW; End Item Identification: F-16C ACFT; Electrical Connection Quantity: 1. 16 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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