PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3731-931-300Indicator,pressure

Crystal Engineering Corp · NSN 6685-01-690-8908 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-690-8908 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-690-8908. Primary manufacturer part number: 3731-931-300.
Features
  • Indicator,pressure — FSC 6685
  • 3 verified cross-references
  • Primary manufacturer: Crystal Engineering Corp
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Indicator,pressure, cataloged under National Stock Number 6685-01-690-8908, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Crystal Engineering Corp. This item has 3 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.

Catalog Facts
Item NameIndicator,pressure
FSC / FSG6685 — No Item Name Available (FSG 66)
ManufacturersCrystal Engineering Corp (CAGE 1PS62); King Nutronics Corporation Dba King Nutronics (CAGE 13859)
Technical Specifications
ParameterValue
NSN6685-01-690-8908
Primary Part Number3731-931-300
Item NameIndicator,pressure
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerCrystal Engineering Corp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5305-00-012-0628120628 INTERCHANGEABLE
Screw,machine
Chrysler Realty Company Llc Dba Daimler Chrysler
5325-00-489-3085 INTERCHANGEABLE
Grommet,nonmetallic
2530-00-728-73365465549 INTERCHANGEABLE
Cylinder Assembly,hydraulic Brak
General Motors Llc Dba General Motors Llc
6515-01-022-4836305 INTERCHANGEABLE
Cannula,laryngeal
Robert Busse & Co., Inc. Dba Robert Busse & Co Inc
5355-01-025-81623495 INTERCHANGEABLE
Pointer,dial
Kearflex Engineering Company
5962-01-111-9751503271-1 INTERCHANGEABLE
Microcircuit,digital
L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products
5998-01-272-42163495 INTERCHANGEABLE
Extractor,electrical Card
Protolab
1630-01-335-9317349-5 INTERCHANGEABLE
Parts Kit,disk Brake
Goodrich Corporation Div Collins Aerospace, Landing Systems (wheels & Brakes)
5925-01-360-66583495 INTERCHANGEABLE
Circuit Breaker
Honeywell International Inc. Dba Honeywell Div Aerospace -Olathe Hums Div
6625-01-368-7236 INTERCHANGEABLE
Multimeter
Cross-Reference Index
Part NumberManufacturer
3731-931-300 Crystal Engineering Corp (USA)
3495 Crystal Engineering Corp (USA)
3731-931-300 King Nutronics Corporation Dba King Nutronics (USA)
Related Parts
5305-00-012-0628INTERCHANGEABLE
SCREW,MACHINE
120628
5325-00-489-3085INTERCHANGEABLE
GROMMET,NONMETALLIC
2530-00-728-7336INTERCHANGEABLE
CYLINDER ASSEMBLY,HYDRAULIC BRAK
5465549
6515-01-022-4836INTERCHANGEABLE
CANNULA,LARYNGEAL
305
5355-01-025-8162INTERCHANGEABLE
POINTER,DIAL
3495
5962-01-111-9751INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
503271-1
5998-01-272-4216INTERCHANGEABLE
EXTRACTOR,ELECTRICAL CARD
3495
1630-01-335-9317INTERCHANGEABLE
PARTS KIT,DISK BRAKE
349-5
5925-01-360-6658INTERCHANGEABLE
CIRCUIT BREAKER
3495
6625-01-368-7236INTERCHANGEABLE
MULTIMETER
5120-01-428-5103INTERCHANGEABLE
PLIERS SET,RETAINING RING
6685-01-690-8960INTERCHANGEABLE
INDICATOR,PRESSURE

Frequently Asked Questions

What is NSN 6685-01-690-8908?

NSN 6685-01-690-8908 is a Indicator,pressure, manufactured by Crystal Engineering Corp, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-690-8908?

NSN 6685-01-690-8908 has 3 cross-referenced part numbers: 3731-931-300 (Crystal Engineering Corp), 3495 (Crystal Engineering Corp), 3731-931-300 (King Nutronics Corporation Dba King Nutronics).

What NSN replaces 6685-01-690-8908?

There are 12 known substitutes for 6685-01-690-8908: 5305-00-012-0628, 5325-00-489-3085, 2530-00-728-7336 and 9 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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