PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20-1000-01B30Gage,pressure,dial Indicating

Ashcroft Inc Dba Heise · NSN 6685-00-844-9253 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-844-9253 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-844-9253. Primary manufacturer part number: 20-1000-01B30.
Features
  • Gage,pressure,dial Indicating — FSC 6685
  • Material: GLASS PROTECTIVE CRYSTAL
  • Material: BRONZE ACTUATING ELEMENT
  • Nondefinitive Spec/std Data: A DESIGN AND A TYPE
  • Surface Treatment: BLACK FINISH CASE
  • Material: STEEL CASE
  • Overall Diameter: 2.156 INCHES NOMINAL IN
  • Mounting Method: RIGID STEM
Applications
  • Applications requiring Glass Protective Crystal construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-844-9253, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Ashcroft Inc Dba Heise. Government technical data includes 25 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 18 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-844-9253
Primary Part Number20-1000-01B30
Item NameGage,pressure,dial Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAshcroft Inc Dba Heise
StatusCANCELLED
MaterialGLASS PROTECTIVE CRYSTAL
MaterialBRONZE ACTUATING ELEMENT
Nondefinitive Spec/std DataA DESIGN AND A TYPE
Surface TreatmentBLACK FINISH CASE
MaterialSTEEL CASE
Overall Diameter2.156 INCHES NOMINAL IN
Mounting MethodRIGID STEM
Connection Quantity1
Scale Accuracy2 PERCENT RATING MIDDLE HALF OF RANGE,3 PERCENT RATING BALANCE OF RANGE
Dial Size2 IN. DIA IN
Connector Type VentNOT PROVIDED
Scale Inscription/background ColorBLACK FIGURES ON WHITE BACKGROUND
Graduation Unit5.0 POUNDS PER SQUARE INCH LBS
Actuation TypeSINGLE BOURDON TUBE
Pointer ColorBLACK
AdjustabilityADJUSTABLE
Scale TypeSINGLE
Pointer TypeINDICATING
Scale NamePRESSURE
Connection TypeEXTERNAL
Bezel TypeSLIPS-ON
Connection Size0.125 IN. NPT DIA IN
Scale Range+0.0 TO 30.0 POUNDS PRESSURE PER SQUARE INCH LBS
Scale Smallest Increment1.0 POUNDS PER SQUARE INCH (PSI) LBS
Connection LocationBACK, CENTER
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
6685-00-531-3934J1452E INTERCHANGEABLE
Gage,pressure,dial Indicating
Bellofram Corporation
5905-00-726-8693PT2017 INTERCHANGEABLE
Resistor,variable,wire Wound,non
Bae Systems Information and Electronic Systems Integration Inc.
5342-01-081-0460E-1C INTERCHANGEABLE
Anode
Camp Company of St Petersburg Inc
4140-01-144-8959022066 INTERCHANGEABLE
Fan,circulating
Rotron Incorporated
3020-01-407-2982 INTERCHANGEABLE
Pulley,flat
6515-01-505-2977497.795 INTERCHANGEABLE
Transconnector Low
Depuy Synthes Sales Inc Dba Depuy Synthes Trauma Div Depuy Synthes Sales, Inc., D/b/a Depuy Synthes Trauma
4030-01-605-262850-6530 INTERCHANGEABLE
Hook,hoist
Woodhead, Lp Dba Woodhead Div Integrated Products Group
5930-01-678-4151P5002 INTERCHANGEABLE
Switch,toggle
Agsa Llc Div Page Gse
Cross-Reference Index
Part NumberManufacturer
J-1842-E Desco Corp Marsh Bellofram Div (USA)
500S2 Ametek, Inc. Div Aerospace & Defense (USA)
P500-2 Ametek, Inc. Div Aerospace & Defense (USA)
1000 Ashcroft Inc Dba Heise (USA)
2-1DP1-8CBM30 Desco Corp Marsh Bellofram Div (USA)
65A427 Olympus America Inc (USA)
P500 1/8CBM2IN-30PSI Ametek, Inc. Div Aerospace & Defense (USA)
20-1000-01B30 PRIMARY Ashcroft Inc Dba Heise (USA)
50653-0 Ametek, Inc. Div Aerospace & Defense (USA)
6685PL1383665 Jednolity Indeks Materialowy - Uniform Material Index (POL)
305914 Honeywell Inc Process Control Div (USA)
44S101 Abb Kent-Taylor Inc (USA)
524323-2 Instruments and Flight Research, Inc. (USA)
SK95035 Abb Kent-Taylor Inc (USA)
455463 Eastman Kodak Co (USA)
050653 Ametek, Inc. Div Aerospace & Defense (USA)
022-066 Desco Corp Marsh Bellofram Div (USA)
65A427 Olympus Scientific Solutions Technologies Inc. (USA)
Related Parts
6685-00-531-3934INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
J1452E
5905-00-726-8693INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
PT2017
5342-01-081-0460INTERCHANGEABLE
ANODE
E-1C
4140-01-144-8959INTERCHANGEABLE
FAN,CIRCULATING
022066
3020-01-407-2982INTERCHANGEABLE
PULLEY,FLAT
6515-01-505-2977INTERCHANGEABLE
TRANSCONNECTOR LOW
497.795
4030-01-605-2628INTERCHANGEABLE
HOOK,HOIST
50-6530
5930-01-678-4151INTERCHANGEABLE
SWITCH,TOGGLE
P5002

Frequently Asked Questions

What is NSN 6685-00-844-9253?

NSN 6685-00-844-9253 is a Gage,pressure,dial Indicating, manufactured by Ashcroft Inc Dba Heise, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-844-9253?

NSN 6685-00-844-9253 has 18 cross-referenced part numbers: J-1842-E (Desco Corp Marsh Bellofram Div), 500S2 (Ametek, Inc. Div Aerospace & Defense), P500-2 (Ametek, Inc. Div Aerospace & Defense), 1000 (Ashcroft Inc Dba Heise), 2-1DP1-8CBM30 (Desco Corp Marsh Bellofram Div) and 13 more.

What NSN replaces 6685-00-844-9253?

There are 8 known substitutes for 6685-00-844-9253: 6685-00-531-3934, 5905-00-726-8693, 5342-01-081-0460 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20-1000-01B30?

Key specifications for 20-1000-01B30: Material: GLASS PROTECTIVE CRYSTAL; Material: BRONZE ACTUATING ELEMENT; Nondefinitive Spec/std Data: A DESIGN AND A TYPE; Surface Treatment: BLACK FINISH CASE. 26 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-844-9253 still in active supply?

NSN 6685-00-844-9253 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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