PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

H1212Gage,compound Pressure-Vacuum,di

Bellofram Corporation · NSN 6685-00-566-8856 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-566-8856 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-566-8856. Primary manufacturer part number: H1212.
Features
  • Gage,compound Pressure-Vacuum,di — FSC 6685
  • Surface Treatment: POLISHED CASE
  • Scale Accuracy: 1 PCT MIDDLE HALF OF SCALE
  • Material: PLASTIC PROTECTIVE CRYSTAL
  • Connection Quantity: 1
  • Scale Name: PRESSURE AND VACUUM
  • Graduation Unit: 10.0 INCHES AND 3.0 POUNDS PER SQUARE INCH LBS
  • Pointer Color: BLACK
Applications
  • Applications requiring Plastic Protective Crystal construction
General Description

The Gage,compound Pressure-Vacuum,di, cataloged under National Stock Number 6685-00-566-8856, 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 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-566-8856
Primary Part NumberH1212
Item NameGage,compound Pressure-Vacuum,di
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerBellofram Corporation
StatusCANCELLED
Surface TreatmentPOLISHED CASE
Scale Accuracy1 PCT MIDDLE HALF OF SCALE
MaterialPLASTIC PROTECTIVE CRYSTAL
Connection Quantity1
Scale NamePRESSURE AND VACUUM
Graduation Unit10.0 INCHES AND 3.0 POUNDS PER SQUARE INCH LBS
Pointer ColorBLACK
AdjustabilityNONADJUSTABLE
Scale Range+0.0 TO 30.0 INCHES OF MERCURY AND +0.0 TO 15.0 POUNDS PRESSURE PER SQUARE INCH LBS
Connection TypeEXTERNAL
Connector Type VentNOT PROVIDED
Scale Smallest Increment1.0 INCHES OF MERCURY (INHG) AND 1.0 POUNDS PER SQUARE INCH (PSI) LBS
Connection Size0.250 IN. NPT DIA IN
Mounting MethodSURFACE WALL
Scale TypeMULTIPLE
Connection LocationLOWER
Bezel TypeTHREAD
Scale Name for Which Pointer Is DesignedPRESSURE AND VACUUM
Actuation TypeSINGLE BOURDON TUBE
MaterialBRASS CASE
Scale Inscription/background ColorBLACK FIGURES ON WHITE BACKGROUND
MaterialBRONZE ACTUATING ELEMENT
Pointer TypeINDICATING
Dial Size3-1/2 IN. DIA IN
Overall Diameter4.719 INCHES NOMINAL IN
Bolt Circle Diameter4.250 INCHES NOMINAL IN
Mounting Hole Quantity3
Mounting Hole Diameter0.218 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
5331-00-250-1209210-750-70 INTERCHANGEABLE
O-Ring
Parker Hannifin Corporation Div O-Ring Division
5340-00-276-58473057 INTERCHANGEABLE
Plug,expansion
Cnh Industrial America Llc Dba Cnh America
5330-00-290-1459S10-15 INTERCHANGEABLE
Gasket
Schulze Mfg., Inc.
4940-00-422-8694S15A INTERCHANGEABLE
Handle-Valve
Clayton Manufacturing Company
6685-00-569-17648169227 INTERCHANGEABLE
Gage,pressure,dial Indicating
Us Army Aviation and Missile Command
5342-00-807-9013H121-2 INTERCHANGEABLE
Latch Assembly
Hartwell Corporation
4730-01-673-3699S715 INTERCHANGEABLE
Coupling,pipe
Milton Industries, Inc
Cross-Reference Index
Part NumberManufacturer
AA444PT2RW Weksler Glass Thermometer Corp (USA)
H1212 PRIMARY Bellofram Corporation (USA)
S715 The Gorman-Rupp Company Div Gorman-Rupp (USA)
1-REE-03170-CLR-001 Desco Corp Marsh Bellofram Div (USA)
34000705 Complete Abrasive Blasting Systems Inc (USA)
H1212 Desco Corp Marsh Bellofram Div (USA)
1007-5 ITEM 6 Complete Abrasive Blasting Systems Inc (USA)
8169227 Us Army Aviation and Missile Command (USA)
AA444PT2RW Ashcroft Inc Dba Heise (USA)
Related Parts
5331-00-250-1209INTERCHANGEABLE
O-RING
210-750-70
5340-00-276-5847INTERCHANGEABLE
PLUG,EXPANSION
3057
5330-00-290-1459INTERCHANGEABLE
GASKET
S10-15
4940-00-422-8694INTERCHANGEABLE
HANDLE-VALVE
S15A
6685-00-569-1764INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
8169227
5342-00-807-9013INTERCHANGEABLE
LATCH ASSEMBLY
H121-2
4730-01-673-3699INTERCHANGEABLE
COUPLING,PIPE
S715

Frequently Asked Questions

What is NSN 6685-00-566-8856?

NSN 6685-00-566-8856 is a Gage,compound Pressure-Vacuum,di, manufactured by Bellofram Corporation, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-566-8856?

NSN 6685-00-566-8856 has 9 cross-referenced part numbers: AA444PT2RW (Weksler Glass Thermometer Corp), H1212 (Bellofram Corporation), S715 (The Gorman-Rupp Company Div Gorman-Rupp), 1-REE-03170-CLR-001 (Desco Corp Marsh Bellofram Div), 34000705 (Complete Abrasive Blasting Systems Inc) and 4 more.

What NSN replaces 6685-00-566-8856?

There are 7 known substitutes for 6685-00-566-8856: 5331-00-250-1209, 5340-00-276-5847, 5330-00-290-1459 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of H1212?

Key specifications for H1212: Surface Treatment: POLISHED CASE; Scale Accuracy: 1 PCT MIDDLE HALF OF SCALE; Material: PLASTIC PROTECTIVE CRYSTAL; Connection Quantity: 1. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-566-8856 still in active supply?

NSN 6685-00-566-8856 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.
PartsTable Design LLC · partstable.com