PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

42004Gage,pressure,dial Indicating

Ritchie Engineering Co Inc · NSN 6685-01-646-9741 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-646-9741 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-646-9741. Primary manufacturer part number: 42004.
Features
  • Gage,pressure,dial Indicating — FSC 6685
  • Connection Type: EXTERNAL
  • Connection Quantity: 3
  • Material: BRASS ACTUATING ELEMENT
  • Scale Inscription/background Color: (2) GAUGE DIALS, ONE BLUE AND THE OTHER RED
  • Connection Size: (3) - 1/8 IN IN
  • 1 verified cross-reference
  • Primary manufacturer: Ritchie Engineering Co Inc
Applications
  • Applications requiring Brass Actuating Element construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-646-9741, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Ritchie Engineering Co Inc. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN6685-01-646-9741
Primary Part Number42004
Item NameGage,pressure,dial Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerRitchie Engineering Co Inc
StatusACTIVE
Connection TypeEXTERNAL
Connection Quantity3
MaterialBRASS ACTUATING ELEMENT
Scale Inscription/background Color(2) GAUGE DIALS, ONE BLUE AND THE OTHER RED
Connection Size(3) - 1/8 IN IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5999-00-504-9215 INTERCHANGEABLE
Heater,thermal Release
6240-00-553-8891INX3509 INTERCHANGEABLE
Lamp,incandescent
Pauluhn Electric Manufacturing, Llp Dba Pauluhn Electric
3040-00-845-3922 INTERCHANGEABLE
Shaft,straight
5950-01-107-3172C8719-1 INTERCHANGEABLE
Transformer,power
Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company
3120-01-245-8834 INTERCHANGEABLE
Bearing,plain,rod End
4920-01-303-087142004 INTERCHANGEABLE
Test Program Set
Textron Systems Corporation Dba Textron Systems Corp
6530-01-304-9754DL-9754 INTERCHANGEABLE
Pouch,liquid Absorbent
Downeast Logistics Llc
5331-01-308-810542004 INTERCHANGEABLE
O-Ring
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
4730-01-367-54784200-4 INTERCHANGEABLE
Coupling Half,quick Disconnect
Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupler Division
5895-01-392-897442004 INTERCHANGEABLE
Modem,communications
Motorola/codex Corp Sub of Motorola Inc
Cross-Reference Index
Part NumberManufacturer
42004 PRIMARY Ritchie Engineering Co Inc (USA)
Related Parts
5999-00-504-9215INTERCHANGEABLE
HEATER,THERMAL RELEASE
6240-00-553-8891INTERCHANGEABLE
LAMP,INCANDESCENT
INX3509
3040-00-845-3922INTERCHANGEABLE
SHAFT,STRAIGHT
5950-01-107-3172INTERCHANGEABLE
TRANSFORMER,POWER
C8719-1
3120-01-245-8834INTERCHANGEABLE
BEARING,PLAIN,ROD END
4920-01-303-0871INTERCHANGEABLE
TEST PROGRAM SET
42004
6530-01-304-9754INTERCHANGEABLE
POUCH,LIQUID ABSORBENT
DL-9754
5331-01-308-8105INTERCHANGEABLE
O-RING
42004
4730-01-367-5478INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
4200-4
5895-01-392-8974INTERCHANGEABLE
MODEM,COMMUNICATIONS
42004
6150-01-500-6255INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
42004
6515-01-504-4324INTERCHANGEABLE
PLATE,ORBITAL,MAXILLOFACIAL SURG
420.04

Frequently Asked Questions

What is NSN 6685-01-646-9741?

NSN 6685-01-646-9741 is a Gage,pressure,dial Indicating, manufactured by Ritchie Engineering Co Inc, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-646-9741?

NSN 6685-01-646-9741 has 1 cross-referenced part number: 42004 (Ritchie Engineering Co Inc).

What NSN replaces 6685-01-646-9741?

There are 12 known substitutes for 6685-01-646-9741: 5999-00-504-9215, 6240-00-553-8891, 3040-00-845-3922 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 42004?

Key specifications for 42004: Connection Type: EXTERNAL; Connection Quantity: 3; Material: BRASS ACTUATING ELEMENT; Scale Inscription/background Color: (2) GAUGE DIALS, ONE BLUE AND THE OTHER RED. 7 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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