PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1531-1Indicator,sight,liquid

Richards Industries Valve Group Jordan Valve Div · NSN 6680-01-056-2809 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-01-056-2809 — this item is cataloged by the U.S. Government under National Stock Number 6680-01-056-2809. Primary manufacturer part number: 1531-1.
Features
  • Indicator,sight,liquid — FSC 6680
  • Sight Diameter: 1.500 INCHES NOMINAL IN
  • Nominal Pipe Size for Which Designed: UNABLE TO DECODE
  • Width Across Flats: 3.250 INCHES NOMINAL IN
  • Style Designator: DOUBLE PORT
  • Bolt Hole Quantity: UNABLE TO DECODE
  • Material: COPPER ALLOY
  • 2 verified cross-references
Applications
  • Applications requiring Copper Alloy construction
General Description

The Indicator,sight,liquid, cataloged under National Stock Number 6680-01-056-2809, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Richards Industries Valve Group Jordan Valve Div. Government technical data includes 6 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6680-01-056-2809
Primary Part Number1531-1
Item NameIndicator,sight,liquid
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerRichards Industries Valve Group Jordan Valve Div
StatusACTIVE
Sight Diameter1.500 INCHES NOMINAL IN
Nominal Pipe Size for Which DesignedUNABLE TO DECODE
Width Across Flats3.250 INCHES NOMINAL IN
Style DesignatorDOUBLE PORT
Bolt Hole QuantityUNABLE TO DECODE
MaterialCOPPER ALLOY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5950-00-137-8135753-0453-000 INTERCHANGEABLE
Coil,radio Frequency
Standex Electronics, Inc.
3110-00-156-418312Z369-57 INTERCHANGEABLE
Bearing,ball,annular
Naval Sea Systems Command
7920-00-205-05657920002050565 INTERCHANGEABLE
Brush,dusting,lens and Photograp
Gordon Brush Mfg. Co., Inc.
4130-00-395-0253 INTERCHANGEABLE
Compressor Unit,refrigeration
5360-00-479-918815311 INTERCHANGEABLE
Spring,helical,compression
Pneudraulics, Inc.
1620-00-718-67915825-5 INTERCHANGEABLE
Cap,housing,spring
Goodrich Aerospace Canada Ltd
1660-00-786-7157 INTERCHANGEABLE
Release Assembly,ma
5935-00-790-8947712268-4 INTERCHANGEABLE
Connector,receptacle,electrical
Raytheon Company Div Rmd Strategic
5133-01-017-8780 INTERCHANGEABLE
Drill,twist
5962-01-061-455915311 INTERCHANGEABLE
Microcircuit,digital
Astronautics Corporation of America
Cross-Reference Index
Part NumberManufacturer
1531-1 PRIMARY Richards Industries Valve Group Jordan Valve Div (USA)
58255 Hamilton Sundstrand Corporation (USA)
Related Parts
5950-00-137-8135INTERCHANGEABLE
COIL,RADIO FREQUENCY
753-0453-000
3110-00-156-4183INTERCHANGEABLE
BEARING,BALL,ANNULAR
12Z369-57
7920-00-205-0565INTERCHANGEABLE
BRUSH,DUSTING,LENS AND PHOTOGRAP
7920002050565
4130-00-395-0253INTERCHANGEABLE
COMPRESSOR UNIT,REFRIGERATION
5360-00-479-9188INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
15311
1620-00-718-6791INTERCHANGEABLE
CAP,HOUSING,SPRING
5825-5
1660-00-786-7157INTERCHANGEABLE
RELEASE ASSEMBLY,MA
5935-00-790-8947INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
712268-4
5133-01-017-8780INTERCHANGEABLE
DRILL,TWIST
5962-01-061-4559INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
15311
6680-01-084-0857INTERCHANGEABLE
COUNTER,ROTATING
C10701-1
5340-01-242-0490INTERCHANGEABLE
LOCK,RIM

Frequently Asked Questions

What is NSN 6680-01-056-2809?

NSN 6680-01-056-2809 is a Indicator,sight,liquid, manufactured by Richards Industries Valve Group Jordan Valve Div, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-01-056-2809?

NSN 6680-01-056-2809 has 2 cross-referenced part numbers: 1531-1 (Richards Industries Valve Group Jordan Valve Div), 58255 (Hamilton Sundstrand Corporation).

What NSN replaces 6680-01-056-2809?

There are 12 known substitutes for 6680-01-056-2809: 5950-00-137-8135, 3110-00-156-4183, 7920-00-205-0565 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1531-1?

Key specifications for 1531-1: Sight Diameter: 1.500 INCHES NOMINAL IN; Nominal Pipe Size for Which Designed: UNABLE TO DECODE; Overall Height: 4.250 INCHES NOMINAL IN; Width Across Flats: 3.250 INCHES NOMINAL IN. 8 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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