PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

50-02-43Head,gage,vacuum

Gretag Ag Sa Ltd · NSN 1677-00-434-0871 · FSC 1677 · No Item Name Available
Verified by PartsTable
NSN 1677-00-434-0871 — this item is cataloged by the U.S. Government under National Stock Number 1677-00-434-0871. Primary manufacturer part number: 50-02-43.
Features
  • Head,gage,vacuum — FSC 1677
  • General Characteristics Item Description: CONVERTS PRESSURE MEASURMENTS TO VOLTAGES AND IS ALSO USED TO CONTROLA RELAY IN THE VACUUM RELAY UNIT
  • 2 verified cross-references
  • Primary manufacturer: Gretag Ag Sa Ltd
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Head,gage,vacuum, cataloged under National Stock Number 1677-00-434-0871, is classified within Federal Supply Class 1677 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Gretag Ag Sa Ltd. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1677-00-434-0871
Primary Part Number50-02-43
Item NameHead,gage,vacuum
FSC / FSG1677 / 16 — No Item Name Available
ManufacturerGretag Ag Sa Ltd
StatusACTIVE
General Characteristics Item DescriptionCONVERTS PRESSURE MEASURMENTS TO VOLTAGES AND IS ALSO USED TO CONTROLA RELAY IN THE VACUUM RELAY UNIT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5331-00-454-0016500243 INTERCHANGEABLE
O-Ring
Aimtron Systems, Llc
1650-00-601-675850024-3 INTERCHANGEABLE
Rod,piston,linear Actuating Cyli
Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc
5999-00-736-94647369464 INTERCHANGEABLE
Cap,electrical
U S Army Tank Automotive Command Amsta-Im-Mm
Cross-Reference Index
Part NumberManufacturer
50-02-43 PRIMARY Gretag Ag Sa Ltd (CHE)
50-02-43 Conrac Systems Inc (USA)
Related Parts
5331-00-454-0016INTERCHANGEABLE
O-RING
500243
1650-00-601-6758INTERCHANGEABLE
ROD,PISTON,LINEAR ACTUATING CYLI
50024-3
5999-00-736-9464INTERCHANGEABLE
CAP,ELECTRICAL
7369464

Frequently Asked Questions

What is NSN 1677-00-434-0871?

NSN 1677-00-434-0871 is a Head,gage,vacuum, manufactured by Gretag Ag Sa Ltd, classified under FSC 1677 (No Item Name Available). Status: active.

What are the part numbers for NSN 1677-00-434-0871?

NSN 1677-00-434-0871 has 2 cross-referenced part numbers: 50-02-43 (Gretag Ag Sa Ltd), 50-02-43 (Conrac Systems Inc).

What NSN replaces 1677-00-434-0871?

There are 3 known substitutes for 1677-00-434-0871: 5331-00-454-0016, 1650-00-601-6758, 5999-00-736-9464. Verify interchangeability with system specifications before substitution.

What are the specifications of 50-02-43?

Key specifications for 50-02-43: General Characteristics Item Description: CONVERTS PRESSURE MEASURMENTS TO VOLTAGES AND IS ALSO USED TO CONTROLA RELAY IN THE VACUUM RELAY UNIT. 1 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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