PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20381Housing,special

Biach Industries, Inc. · NSN 4470-01-211-2566 · FSC 4470 · No Item Name Available
Verified by PartsTable
NSN 4470-01-211-2566 — this item is cataloged by the U.S. Government under National Stock Number 4470-01-211-2566. Primary manufacturer part number: 20381.
Features
  • Housing,special — FSC 4470
  • Criticality Code Justification: ZZZY
  • Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
  • 1 verified cross-reference
  • Primary manufacturer: Biach Industries, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Housing,special, cataloged under National Stock Number 4470-01-211-2566, is classified within Federal Supply Class 4470 (No Item Name Available) of the Furnace, Steam, Drying, Nuclear Reactors group. The primary manufacturer of record is Biach Industries, Inc.. Government technical data includes 2 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4470-01-211-2566
Primary Part Number20381
Item NameHousing,special
FSC / FSG4470 / 44 — No Item Name Available
ManufacturerBiach Industries, Inc.
StatusACTIVE
Criticality Code JustificationZZZY
Reference Number Differentiating CharacteristicsMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5325-00-281-6506 INTERCHANGEABLE
Ring,retaining
3820-00-406-663420381 INTERCHANGEABLE
Safety Chain and Support
Eagle Crusher Co Inc Dba Stedman Machine Co
5330-00-505-6186AWR4 INTERCHANGEABLE
Seal,special
Dixon Valve & Coupling Company, Llc Div Dixon Fire
2530-00-737-10107371010 INTERCHANGEABLE
Brake Drum
U S Army Tank Automotive Command Amsta-Im-Mm
5340-00-911-245420381 INTERCHANGEABLE
Hinge,access Door
Silver King Refrigeration Inc.
6625-00-976-128331-2038-1 INTERCHANGEABLE
Adapter,test
Amphenol Corporation Div Amphenol Rf
5342-01-194-8728 INTERCHANGEABLE
Hinge
4320-01-210-9629206-735 INTERCHANGEABLE
Parts Kit,rotary Pump
Graco Inc.
3020-01-221-147320381 INTERCHANGEABLE
Gear,internal
Dana Commercial Vehicle Products, Llc
1680-01-345-76492038-1 INTERCHANGEABLE
Filter,aircraft Instruments
B/e Aerospace, Inc.
Cross-Reference Index
Part NumberManufacturer
20381 Biach Industries, Inc. (USA)
Related Parts
5325-00-281-6506INTERCHANGEABLE
RING,RETAINING
3820-00-406-6634INTERCHANGEABLE
SAFETY CHAIN AND SUPPORT
20381
5330-00-505-6186INTERCHANGEABLE
SEAL,SPECIAL
AWR4
2530-00-737-1010INTERCHANGEABLE
BRAKE DRUM
7371010
5340-00-911-2454INTERCHANGEABLE
HINGE,ACCESS DOOR
20381
6625-00-976-1283INTERCHANGEABLE
ADAPTER,TEST
31-2038-1
5342-01-194-8728INTERCHANGEABLE
HINGE
4320-01-210-9629INTERCHANGEABLE
PARTS KIT,ROTARY PUMP
206-735
3020-01-221-1473INTERCHANGEABLE
GEAR,INTERNAL
20381
1680-01-345-7649INTERCHANGEABLE
FILTER,AIRCRAFT INSTRUMENTS
2038-1
6640-01-421-5514INTERCHANGEABLE
PANEL,CONTROL,CLEAN
20381
4820-01-442-8259INTERCHANGEABLE
VALVE,SAFETY RELIEF
2038101E0005

Frequently Asked Questions

What is NSN 4470-01-211-2566?

NSN 4470-01-211-2566 is a Housing,special, manufactured by Biach Industries, Inc., classified under FSC 4470 (No Item Name Available). Status: active.

What are the part numbers for NSN 4470-01-211-2566?

NSN 4470-01-211-2566 has 1 cross-referenced part number: 20381 (Biach Industries, Inc.).

What NSN replaces 4470-01-211-2566?

There are 12 known substitutes for 4470-01-211-2566: 5325-00-281-6506, 3820-00-406-6634, 5330-00-505-6186 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20381?

Key specifications for 20381: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS. 2 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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