PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8178474Block,flotation

Us Army Aviation and Missile Command · NSN 1560-00-772-7704 · FSC 1560 · No Item Name Available
Verified by PartsTable
NSN 1560-00-772-7704 — this item is cataloged by the U.S. Government under National Stock Number 1560-00-772-7704. Primary manufacturer part number: 8178474.
Features
  • Block,flotation — FSC 1560
  • General Characteristics Item Description: STYROFOAM,14.500 IN. LG,1.750 IN. W IN
  • 2 verified cross-references
  • Primary manufacturer: Us Army Aviation and Missile Command
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Block,flotation, cataloged under National Stock Number 1560-00-772-7704, is classified within Federal Supply Class 1560 (No Item Name Available) of the Aircraft and Airframe Components group. The primary manufacturer of record is Us Army Aviation and Missile Command. 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1560-00-772-7704
Primary Part Number8178474
Item NameBlock,flotation
FSC / FSG1560 / 15 — No Item Name Available
ManufacturerUs Army Aviation and Missile Command
StatusACTIVE
General Characteristics Item DescriptionSTYROFOAM,14.500 IN. LG,1.750 IN. W IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5330-00-196-178422518CAD INTERCHANGEABLE
Seal,plain Encased
Otis Elevator Co Sub of United Technologies Corp
2520-00-377-5390206160328 INTERCHANGEABLE
Sleeve,differential
E H Metalcraft Co, Inc. Dba Eh Metalcraft
3110-00-555-5310AT4036 INTERCHANGEABLE
Bearing,ball,thrust
Schatz Bearing Corporation Dba Schatz Bearing Corp
5331-00-808-079410596841-5 INTERCHANGEABLE
O-Ring
Us Army Aviation and Missile Command
3130-01-284-472822518 INTERCHANGEABLE
Housing,bearing Unit
Skf Usa Inc.
5330-01-329-1908G101-18 INTERCHANGEABLE
Gasket
Essex Industries, Inc. Dba Essex Industries
Cross-Reference Index
Part NumberManufacturer
8178474 PRIMARY Us Army Aviation and Missile Command (USA)
22518 Northrop Grumman Systems Corporation Dba Aerospace Systems Div Aeronautics Systems (USA)
Related Parts
5330-00-196-1784INTERCHANGEABLE
SEAL,PLAIN ENCASED
22518CAD
2520-00-377-5390INTERCHANGEABLE
SLEEVE,DIFFERENTIAL
206160328
3110-00-555-5310INTERCHANGEABLE
BEARING,BALL,THRUST
AT4036
5331-00-808-0794INTERCHANGEABLE
O-RING
10596841-5
3130-01-284-4728INTERCHANGEABLE
HOUSING,BEARING UNIT
22518
5330-01-329-1908INTERCHANGEABLE
GASKET
G101-18

Frequently Asked Questions

What is NSN 1560-00-772-7704?

NSN 1560-00-772-7704 is a Block,flotation, manufactured by Us Army Aviation and Missile Command, classified under FSC 1560 (No Item Name Available). Status: active.

What are the part numbers for NSN 1560-00-772-7704?

NSN 1560-00-772-7704 has 2 cross-referenced part numbers: 8178474 (Us Army Aviation and Missile Command), 22518 (Northrop Grumman Systems Corporation Dba Aerospace Systems Div Aeronautics Systems).

What NSN replaces 1560-00-772-7704?

There are 6 known substitutes for 1560-00-772-7704: 5330-00-196-1784, 2520-00-377-5390, 3110-00-555-5310 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8178474?

Key specifications for 8178474: General Characteristics Item Description: STYROFOAM,14.500 IN. LG,1.750 IN. W 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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