PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

BZ-HF-4Filter,hood,laminar

Germfree Laboratories, Llc · NSN 6640-01-575-7759 · FSC 6640 · No Item Name Available
Verified by PartsTable
NSN 6640-01-575-7759 — this item is cataloged by the U.S. Government under National Stock Number 6640-01-575-7759. Primary manufacturer part number: BZ-HF-4.
Features
  • Filter,hood,laminar — FSC 6640
  • 3 verified cross-references
  • Primary manufacturer: Germfree Laboratories, Llc
Applications
  • Fluid filtration and purification
  • Engine intake air cleaning
  • Hydraulic system protection
General Description

The Filter,hood,laminar, cataloged under National Stock Number 6640-01-575-7759, is classified within Federal Supply Class 6640 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Germfree Laboratories, Llc. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6640-01-575-7759
Primary Part NumberBZ-HF-4
Item NameFilter,hood,laminar
FSC / FSG6640 / 66 — No Item Name Available
ManufacturerGermfree Laboratories, Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
6930-00-119-760513142 INTERCHANGEABLE
Bellows Assembly,ce
Cae Usa Inc.
6630-00-171-446713142 INTERCHANGEABLE
Tester,battery Electrolyte Solut
Enersys Corporation Div Motive Power National Accounts
2530-00-215-536877804 INTERCHANGEABLE
Parts Kit,hydraulic Brake Master
Dressta North America Ltd
5940-00-331-30691755616 INTERCHANGEABLE
Terminal Board
Naval Ship Systems Command
6145-00-538-92258426 INTERCHANGEABLE
Cable,special Purpose,electrical
Belden Wire & Cable Company Llc Dba Belden Cdt Electronics Division
5950-00-799-20607664931-501 INTERCHANGEABLE
Transformer,power Autotransforme
The Boeing Company
4820-01-065-4331 INTERCHANGEABLE
Valve,charging
6220-01-117-66521314-502 INTERCHANGEABLE
Light,navigational,aircraft
Control Products Corporation
4620-01-184-0503013-00142-000 INTERCHANGEABLE
Cap,spray
Aqua-Chem, Inc. Dba Aqua-Chem Inc
5999-01-254-37651314-2 INTERCHANGEABLE
Shielding Gasket,electronic
Bae Systems Information and Electronic Systems Integration Inc.
Cross-Reference Index
Part NumberManufacturer
BZ-HF-4 PRIMARY Germfree Laboratories, Llc (USA)
6640NCM093665 Defense Medical Standardization Board (USA)
13142 Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia (USA)
Related Parts
6930-00-119-7605INTERCHANGEABLE
BELLOWS ASSEMBLY,CE
13142
6630-00-171-4467INTERCHANGEABLE
TESTER,BATTERY ELECTROLYTE SOLUT
13142
2530-00-215-5368INTERCHANGEABLE
PARTS KIT,HYDRAULIC BRAKE MASTER
77804
5940-00-331-3069INTERCHANGEABLE
TERMINAL BOARD
1755616
6145-00-538-9225INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
8426
5950-00-799-2060INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
7664931-501
4820-01-065-4331INTERCHANGEABLE
VALVE,CHARGING
6220-01-117-6652INTERCHANGEABLE
LIGHT,NAVIGATIONAL,AIRCRAFT
1314-502
4620-01-184-0503INTERCHANGEABLE
CAP,SPRAY
013-00142-000
5999-01-254-3765INTERCHANGEABLE
SHIELDING GASKET,ELECTRONIC
1314-2

Frequently Asked Questions

What is NSN 6640-01-575-7759?

NSN 6640-01-575-7759 is a Filter,hood,laminar, manufactured by Germfree Laboratories, Llc, classified under FSC 6640 (No Item Name Available). Status: active.

What are the part numbers for NSN 6640-01-575-7759?

NSN 6640-01-575-7759 has 3 cross-referenced part numbers: BZ-HF-4 (Germfree Laboratories, Llc), 6640NCM093665 (Defense Medical Standardization Board), 13142 (Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia).

What NSN replaces 6640-01-575-7759?

There are 10 known substitutes for 6640-01-575-7759: 6930-00-119-7605, 6630-00-171-4467, 2530-00-215-5368 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of BZ-HF-4?

Key specifications for BZ-HF-4: End Item Identification: 6640-01-493-8582 HOOD, LAMINAR AIR FLOW, LABORATORY; Part Name Assigned by Controlling Agency: FILTER HEPA LAMINAR FLOW HOOD; Special Features: MAIN HIGH EFFICIENCY PARTICLE AIR FILTER; FOR GERMFREE BZ4-SS LAMINAR FLOW HOOD, 6640-01-493-8582. 3 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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