PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

H-3380Cap,pycnometer

Humboldt Mfg. Co · NSN 6635-00-371-9699 · FSC 6635 · No Item Name Available
Verified by PartsTable
NSN 6635-00-371-9699 — this item is cataloged by the U.S. Government under National Stock Number 6635-00-371-9699. Primary manufacturer part number: H-3380.
Features
  • Cap,pycnometer — FSC 6635
  • General Characteristics Item Description: BRASS; 3/8 IN. HOLE DIA OF TOP; THREADED END FITS 1 OR 2 QUART GLASS JAR; RUBBER GASKET IN
  • 2 verified cross-references
  • Primary manufacturer: Humboldt Mfg. Co
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Cap,pycnometer, cataloged under National Stock Number 6635-00-371-9699, is classified within Federal Supply Class 6635 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Humboldt Mfg. Co. 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6635-00-371-9699
Primary Part NumberH-3380
Item NameCap,pycnometer
FSC / FSG6635 / 66 — No Item Name Available
ManufacturerHumboldt Mfg. Co
StatusACTIVE
General Characteristics Item DescriptionBRASS; 3/8 IN. HOLE DIA OF TOP; THREADED END FITS 1 OR 2 QUART GLASS JAR; RUBBER GASKET IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5950-00-688-5822C-9455 INTERCHANGEABLE
Transformer,power Autotransforme
Staco Energy Products Co Dba Staco Energy Products Co
Cross-Reference Index
Part NumberManufacturer
H-3380 PRIMARY Humboldt Mfg. Co (USA)
C9455 Hogentogler & Co., Inc. (USA)
Related Parts
5950-00-688-5822INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
C-9455

Frequently Asked Questions

What is NSN 6635-00-371-9699?

NSN 6635-00-371-9699 is a Cap,pycnometer, manufactured by Humboldt Mfg. Co, classified under FSC 6635 (No Item Name Available). Status: active.

What are the part numbers for NSN 6635-00-371-9699?

NSN 6635-00-371-9699 has 2 cross-referenced part numbers: H-3380 (Humboldt Mfg. Co), C9455 (Hogentogler & Co., Inc.).

What NSN replaces 6635-00-371-9699?

There is 1 known substitute for 6635-00-371-9699: 5950-00-688-5822. Verify interchangeability with system specifications before substitution.

What are the specifications of H-3380?

Key specifications for H-3380: General Characteristics Item Description: BRASS; 3/8 IN. HOLE DIA OF TOP; THREADED END FITS 1 OR 2 QUART GLASS JAR; RUBBER GASKET IN. 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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