PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

J1816Gage,compound Pressure-Vacuum,di

Bellofram Corporation · NSN 6685-00-068-2699 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-068-2699 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-068-2699. Primary manufacturer part number: J1816.
Features
  • Gage,compound Pressure-Vacuum,di — FSC 6685
  • Overall Diameter: 2.170 INCHES NOMINAL IN
  • Scale Range: +0.0 TO 30.0 INCHES OF MERCURY AND +0.0 TO 100.0 POUNDS PRESSURE PER SQUARE INCH LBS
  • Graduation Unit: 30.0 INCHES OF MERCURY AND 10.0 POUNDS PER SQUARE INCH LBS
  • Connection Quantity: 1
  • Scale Smallest Increment: 2.0 INCHES OF MERCURY (INHG) AND 1.0 POUNDS PER SQUARE INCH (PSI) LBS
  • Dial Size: 2 IN. DIA IN
  • Adjustability: NONADJUSTABLE
Applications
  • Applications requiring Copper Alloy 511 Actuating Element construction
General Description

The Gage,compound Pressure-Vacuum,di, cataloged under National Stock Number 6685-00-068-2699, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Bellofram Corporation. Government technical data includes 23 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 8 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
NSN6685-00-068-2699
Primary Part NumberJ1816
Item NameGage,compound Pressure-Vacuum,di
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerBellofram Corporation
StatusACTIVE
Overall Diameter2.170 INCHES NOMINAL IN
Scale Range+0.0 TO 30.0 INCHES OF MERCURY AND +0.0 TO 100.0 POUNDS PRESSURE PER SQUARE INCH LBS
Graduation Unit30.0 INCHES OF MERCURY AND 10.0 POUNDS PER SQUARE INCH LBS
Connection Quantity1
Scale Smallest Increment2.0 INCHES OF MERCURY (INHG) AND 1.0 POUNDS PER SQUARE INCH (PSI) LBS
Dial Size2 IN. DIA IN
AdjustabilityNONADJUSTABLE
Pointer ColorBLACK
Scale TypeMULTIPLE
Actuation TypeSINGLE BOURDON TUBE
Scale NamePRESSURE-VACUUM
Pointer TypeINDICATING
MaterialCOPPER ALLOY 511 ACTUATING ELEMENT
MaterialPLASTIC PROTECTIVE CRYSTAL
Mounting MethodRIGID STEM
Connector Type VentNOT PROVIDED
MaterialSTEEL CASE
Scale Inscription/background ColorBLACK MARKINGS ON WHITE BACKGROUND
Supplementary FeaturesPHOSPHOR BRONZE ACTUATIING ELEMENT
Connection Size0.125 IN. NPT IN
Connection LocationBACK, CENTER
Scale Accuracy2 PCT MIDDLE HALF,3 PCT REMAINDER OF RANGE
Surface TreatmentENAMEL CASE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6685-00-081-770812293-0 INTERCHANGEABLE
Gage,compound Pressure-Vacuum,di
Ametek, Inc. Div Aerospace & Defense
6685-00-104-9625 INTERCHANGEABLE
Gage,compound Pressure-Vacuum,di
2825-00-148-1680800-899-90X INTERCHANGEABLE
Governor with Conve
Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions
5975-00-152-1144 INTERCHANGEABLE
Box Connector,electrical
6685-00-202-3966 INTERCHANGEABLE
Gage,compound Pressure-Vacuum,di
5999-00-220-9775 INTERCHANGEABLE
Clip,electrical
6685-00-248-6975046646A INTERCHANGEABLE
Gage,compound Pressure-Vacuum,di
Ametek, Inc. Div Aerospace & Defense
3433-00-399-7037505976 INTERCHANGEABLE
Torch Outfit,oxyhydrogen Cutting
Naval Ship Systems Command
6685-00-426-67102429 INTERCHANGEABLE
Gage,compound Pressure-Vacuum,di
Alter Harry Co the Div of T E C
5905-00-499-6512C500 INTERCHANGEABLE
Resistor,fixed,film
Howell Instruments, Inc. Dba Howell Instruments Inc
Cross-Reference Index
Part NumberManufacturer
20-1001T-01BXTS100PSI30VAC Ashcroft Inc Dba Heise (USA)
9137026 Sicard a Division of Smi-Snowblast Inc Dba Sicard (USA)
1AFB01500AAA Desco Corp Marsh Bellofram Div (USA)
6685PL0788555 Jednolity Indeks Materialowy - Uniform Material Index (POL)
C500 Ametek, Inc. Div Aerospace & Defense (USA)
6671-001 Parker Hannifin Corporation Dba Gresen Hydraulics Div Hydraulic Valve Division (USA)
1568 Parker Hannifin Corporation Dba Gresen Hydraulics Div Hydraulic Valve Division (USA)
45C Liftec Inc Div Liftec, Inc. (USA)
J1816 Desco Corp Marsh Bellofram Div (USA)
J1816 PRIMARY Bellofram Corporation (USA)
20-1000-01BXTS100PSI30VAC Ashcroft Inc Dba Heise (USA)
Related Parts
6685-00-081-7708INTERCHANGEABLE
GAGE,COMPOUND PRESSURE-VACUUM,DI
12293-0
6685-00-104-9625INTERCHANGEABLE
GAGE,COMPOUND PRESSURE-VACUUM,DI
2825-00-148-1680INTERCHANGEABLE
GOVERNOR WITH CONVE
800-899-90X
5975-00-152-1144INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
6685-00-202-3966INTERCHANGEABLE
GAGE,COMPOUND PRESSURE-VACUUM,DI
5999-00-220-9775INTERCHANGEABLE
CLIP,ELECTRICAL
6685-00-248-6975INTERCHANGEABLE
GAGE,COMPOUND PRESSURE-VACUUM,DI
046646A
3433-00-399-7037INTERCHANGEABLE
TORCH OUTFIT,OXYHYDROGEN CUTTING
505976
6685-00-426-6710INTERCHANGEABLE
GAGE,COMPOUND PRESSURE-VACUUM,DI
2429
5905-00-499-6512INTERCHANGEABLE
RESISTOR,FIXED,FILM
C500
6685-00-527-6180INTERCHANGEABLE
GAGE,COMPOUND PRESSURE-VACUUM,DI
6685-00-581-8867INTERCHANGEABLE
GAGE,COMPOUND PRESSURE-VACUUM,DI
7891-051REVDPC25

Frequently Asked Questions

What is NSN 6685-00-068-2699?

NSN 6685-00-068-2699 is a Gage,compound Pressure-Vacuum,di, manufactured by Bellofram Corporation, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-00-068-2699?

NSN 6685-00-068-2699 has 11 cross-referenced part numbers: 20-1001T-01BXTS100PSI30VAC (Ashcroft Inc Dba Heise), 9137026 (Sicard a Division of Smi-Snowblast Inc Dba Sicard), 1AFB01500AAA (Desco Corp Marsh Bellofram Div), 6685PL0788555 (Jednolity Indeks Materialowy - Uniform Material Index), C500 (Ametek, Inc. Div Aerospace & Defense) and 6 more.

What NSN replaces 6685-00-068-2699?

There are 12 known substitutes for 6685-00-068-2699: 6685-00-081-7708, 6685-00-104-9625, 2825-00-148-1680 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of J1816?

Key specifications for J1816: Overall Diameter: 2.170 INCHES NOMINAL IN; Scale Range: +0.0 TO 30.0 INCHES OF MERCURY AND +0.0 TO 100.0 POUNDS PRESSURE PER SQUARE INCH LBS; Graduation Unit: 30.0 INCHES OF MERCURY AND 10.0 POUNDS PER SQUARE INCH LBS; Connection Quantity: 1. 26 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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