PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

PPC4Tester,pressure Gage

Dh Instruments Inc. · NSN 6685-01-578-0438 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-578-0438 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-578-0438. Primary manufacturer part number: PPC4.
Features
  • Tester,pressure Gage — FSC 6685
  • Mounting Type: BENCH
  • Portability: PORTABLE
  • Carrying Case: PROVIDED
  • 1 verified cross-reference
  • Primary manufacturer: Dh Instruments Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Tester,pressure Gage, cataloged under National Stock Number 6685-01-578-0438, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Dh Instruments Inc.. Government technical data includes 3 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-01-578-0438
Primary Part NumberPPC4
Item NameTester,pressure Gage
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerDh Instruments Inc.
StatusACTIVE
Mounting TypeBENCH
PortabilityPORTABLE
Carrying CasePROVIDED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5340-00-988-3210MS25281-R4 INTERCHANGEABLE
Clamp,loop
Sae International Dba Sae International
5120-01-335-1462PPC4A INTERCHANGEABLE
Punch,center,solid
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
Cross-Reference Index
Part NumberManufacturer
PPC4 PRIMARY Dh Instruments Inc. (USA)
Related Parts
5340-00-988-3210INTERCHANGEABLE
CLAMP,LOOP
MS25281-R4
5120-01-335-1462INTERCHANGEABLE
PUNCH,CENTER,SOLID
PPC4A

Frequently Asked Questions

What is NSN 6685-01-578-0438?

NSN 6685-01-578-0438 is a Tester,pressure Gage, manufactured by Dh Instruments Inc., classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-578-0438?

NSN 6685-01-578-0438 has 1 cross-referenced part number: PPC4 (Dh Instruments Inc.).

What NSN replaces 6685-01-578-0438?

There are 2 known substitutes for 6685-01-578-0438: 5340-00-988-3210, 5120-01-335-1462. Verify interchangeability with system specifications before substitution.

What are the specifications of PPC4?

Key specifications for PPC4: Mounting Type: BENCH; Portability: PORTABLE; Carrying Case: PROVIDED; Part Name Assigned by Controlling Agency: PPC4(TM) PRESSURE CONTROLLER-CALIBRATOR. 4 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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