PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2004Gage,differential,dial Indicatin

Dwyer Instruments Inc · NSN 6685-00-488-3635 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-488-3635 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-488-3635. Primary manufacturer part number: 2004.
Features
  • Gage,differential,dial Indicatin — FSC 6685
  • Dial Size: 4 IN. DIA IN
  • Connection Location: BACK AND SIDE
  • Actuation Type: DIAPHRAGM
  • Material: PLASTIC PROTECTIVE CRYSTAL
  • Scale Name: DIFFERENTIAL PRESSURE
  • Pointer Type: INDICATING
  • Connector Type Vent: NOT PROVIDED
Applications
  • Applications requiring Plastic Protective Crystal construction
General Description

The Gage,differential,dial Indicatin, cataloged under National Stock Number 6685-00-488-3635, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Dwyer Instruments Inc. Government technical data includes 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-488-3635
Primary Part Number2004
Item NameGage,differential,dial Indicatin
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerDwyer Instruments Inc
StatusCANCELLED
Dial Size4 IN. DIA IN
Connection LocationBACK AND SIDE
Actuation TypeDIAPHRAGM
MaterialPLASTIC PROTECTIVE CRYSTAL
Scale NameDIFFERENTIAL PRESSURE
Pointer TypeINDICATING
Connector Type VentNOT PROVIDED
Scale TypeSINGLE
Connection Quantity4
MaterialALUMINUM CASE
MaterialALUMINUM LOCATION NOT OTHERWISE SPECIFIED
AdjustabilityADJUSTABLE
Graduation Unit1.0 INCHES IN
Connection Size0.125 IN. NPT DIA IN
Scale Accuracy2 PCT ENTIRE RANGE
Scale Inscription/background ColorBLACK FIGURES ON WHITE
Bezel TypeTHREAD
Scale Range+0.0 TO 4.0 INCHES IN
Connection TypeINTERNAL
Scale Smallest Increment0.1 INCHES IN
MaterialRUBBER SILICONE CLASS Q ACTUATING ELEMENT
Mounting MethodFLUSH PANEL AND SURFACE WALL
Pointer ColorALUMINUM
Overall Diameter4.750 INCHES NOMINAL IN
Bolt Circle Diameter4.125 INCHES NOMINAL IN
Mounting Hole Diameter0.250 INCHES NOMINAL IN
Mounting Hole Quantity3
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6685-00-066-895545-1188P1079-02L0-20IN INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
5110-00-197-9499 INTERCHANGEABLE
Chisel,cape,hand
4320-00-218-329010402 INTERCHANGEABLE
Impeller,pump,centrifugal
Rps-Fl, Inc. Dba Rps Inc
5940-00-228-034410402 INTERCHANGEABLE
Terminal Board
Cinch Connectivity Solutions Inc.
5330-00-371-730548116 INTERCHANGEABLE
Felt,mechanical,preformed
Dana Automotive Systems Group, Llc Dba Dana Sealing Products
4320-00-588-646710402 INTERCHANGEABLE
Sleeve,shaft,pump
Morris Pumps Inc
5310-00-600-2858 INTERCHANGEABLE
Washer,lock
4920-00-775-4921 INTERCHANGEABLE
Seal Assembly,hydra
6685-00-802-637112-190454-00 INTERCHANGEABLE
Gage,differential,dial Indicatin
Dwyer Instruments Inc
5940-00-942-553710-109-2-01 INTERCHANGEABLE
Terminal,stud
Concord Electronics, Inc.
Cross-Reference Index
Part NumberManufacturer
1040F6 Dwyer Instruments Inc (USA)
1040-2 Dwyer Instruments Inc (USA)
1040F6 Coltec Industries Inc. Dba Fairbanks Morse Engine Div Fairbanks Morse Engine (USA)
2004 PRIMARY Dwyer Instruments Inc (USA)
335534 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
11900309 Coltec Industries Inc. Dba Fairbanks Morse Engine Div Fairbanks Morse Engine (USA)
083166-2 Mission Systems Davenport Inc. (USA)
Related Parts
6685-00-066-8955INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
45-1188P1079-02L0-20IN
5110-00-197-9499INTERCHANGEABLE
CHISEL,CAPE,HAND
4320-00-218-3290INTERCHANGEABLE
IMPELLER,PUMP,CENTRIFUGAL
10402
5940-00-228-0344INTERCHANGEABLE
TERMINAL BOARD
10402
5330-00-371-7305INTERCHANGEABLE
FELT,MECHANICAL,PREFORMED
48116
4320-00-588-6467INTERCHANGEABLE
SLEEVE,SHAFT,PUMP
10402
5310-00-600-2858INTERCHANGEABLE
WASHER,LOCK
4920-00-775-4921INTERCHANGEABLE
SEAL ASSEMBLY,HYDRA
6685-00-802-6371INTERCHANGEABLE
GAGE,DIFFERENTIAL,DIAL INDICATIN
12-190454-00
5940-00-942-5537INTERCHANGEABLE
TERMINAL,STUD
10-109-2-01
5977-00-945-8790INTERCHANGEABLE
BRUSH,ELECTRICAL CONTACT
10402
5905-00-974-6426INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
381-0003-100

Frequently Asked Questions

What is NSN 6685-00-488-3635?

NSN 6685-00-488-3635 is a Gage,differential,dial Indicatin, manufactured by Dwyer Instruments Inc, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-488-3635?

NSN 6685-00-488-3635 has 7 cross-referenced part numbers: 1040F6 (Dwyer Instruments Inc), 1040-2 (Dwyer Instruments Inc), 1040F6 (Coltec Industries Inc. Dba Fairbanks Morse Engine Div Fairbanks Morse Engine), 2004 (Dwyer Instruments Inc), 335534 (Lockheed Martin Corporation Div Rms - Mitchel Field) and 2 more.

What NSN replaces 6685-00-488-3635?

There are 12 known substitutes for 6685-00-488-3635: 6685-00-066-8955, 5110-00-197-9499, 4320-00-218-3290 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2004?

Key specifications for 2004: Dial Size: 4 IN. DIA IN; Connection Location: BACK AND SIDE; Actuation Type: DIAPHRAGM; Special Features: BAKED DARK GRAY HAMMERIOID; RED TIP POINTER. 29 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-488-3635 still in active supply?

NSN 6685-00-488-3635 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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