PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

HH-21APyrometer,indicating

Omega Engineering, Inc. · NSN 6685-01-362-0241 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-362-0241 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-362-0241. Primary manufacturer part number: HH-21A.
Features
  • Pyrometer,indicating — FSC 6685
  • 3 verified cross-references
  • Primary manufacturer: Omega Engineering, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Pyrometer,indicating, cataloged under National Stock Number 6685-01-362-0241, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Omega Engineering, Inc.. This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-01-362-0241
Primary Part NumberHH-21A
Item NamePyrometer,indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerOmega Engineering, Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3120-00-082-5968HH21 INTERCHANGEABLE
Bushing,sleeve
Circor Naval Solutions Llc Dba Warren Pumps
Cross-Reference Index
Part NumberManufacturer
HH-21 Omega Engineering, Inc. (USA)
ACT7000 Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
HH-21A PRIMARY Omega Engineering, Inc. (USA)
Related Parts
3120-00-082-5968INTERCHANGEABLE
BUSHING,SLEEVE
HH21

Frequently Asked Questions

What is NSN 6685-01-362-0241?

NSN 6685-01-362-0241 is a Pyrometer,indicating, manufactured by Omega Engineering, Inc., classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-362-0241?

NSN 6685-01-362-0241 has 3 cross-referenced part numbers: HH-21 (Omega Engineering, Inc.), ACT7000 (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc), HH-21A (Omega Engineering, Inc.).

What NSN replaces 6685-01-362-0241?

There is 1 known substitute for 6685-01-362-0241: 3120-00-082-5968. Verify interchangeability with system specifications before substitution.

What are the specifications of HH-21A?

Key specifications for HH-21A: End Item Identification: AIRCRAFT MODEL H-53. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com