PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1639AS100-1Hood Assembly,anti-Exposure

Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier · NSN 8475-01-255-7490 · FSC 8475 · No Item Name Available
Verified by PartsTable
NSN 8475-01-255-7490 — this item is cataloged by the U.S. Government under National Stock Number 8475-01-255-7490. Primary manufacturer part number: 1639AS100-1.
Features
  • Hood Assembly,anti-Exposure — FSC 8475
  • Procurement Group Code: 25845
  • 4 verified cross-references
  • Primary manufacturer: Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Hood Assembly,anti-Exposure, cataloged under National Stock Number 8475-01-255-7490, is classified within Federal Supply Class 8475 (No Item Name Available) of the Clothing, Individual Equipment, and Insignia group. The primary manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, 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
NSN8475-01-255-7490
Primary Part Number1639AS100-1
Item NameHood Assembly,anti-Exposure
FSC / FSG8475 / 84 — No Item Name Available
ManufacturerNaval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
StatusACTIVE
Procurement Group Code25845
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5340-00-042-85318233B0632-3 INTERCHANGEABLE
Standoff,threaded,spacing
Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware
5950-00-083-0681DO-T39 INTERCHANGEABLE
Transformer,audio Frequency
Shield Air Co
5330-00-251-32294001639-6 INTERCHANGEABLE
Gasket
Agco Corp Parts Opn
2805-00-271-954358010A INTERCHANGEABLE
Valve,poppet,engine
Brinkley Technology Group Llc Dba Hercules Manufacturing
5996-01-005-9519151169-01 INTERCHANGEABLE
Amplifier,direct Current
Ge Aviation Systems Llc
5325-01-076-8453WA-514 INTERCHANGEABLE
Ring,retaining
West Coast Lockwasher Co., Inc. Dba West Coast Lockwasher Co Inc Div West Coast Lockwasher
5815-01-083-9412 INTERCHANGEABLE
Guide,needle
5340-01-088-47371639 INTERCHANGEABLE
Handle,bow
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
5905-01-096-36771639 INTERCHANGEABLE
Resistor
Crown Audio, Inc. Dba Crown International
4930-01-312-68291639 INTERCHANGEABLE
Roller Assembly,hose Reel
Coxwells Inc Dba Coxreels
Cross-Reference Index
Part NumberManufacturer
1639AS100-1 PRIMARY Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
8475PL0846755 Jednolity Indeks Materialowy - Uniform Material Index (POL)
MIL-H-81843 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
1639 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
Related Parts
5340-00-042-8531INTERCHANGEABLE
STANDOFF,THREADED,SPACING
8233B0632-3
5950-00-083-0681INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
DO-T39
5330-00-251-3229INTERCHANGEABLE
GASKET
4001639-6
2805-00-271-9543INTERCHANGEABLE
VALVE,POPPET,ENGINE
58010A
5996-01-005-9519INTERCHANGEABLE
AMPLIFIER,DIRECT CURRENT
151169-01
5325-01-076-8453INTERCHANGEABLE
RING,RETAINING
WA-514
5815-01-083-9412INTERCHANGEABLE
GUIDE,NEEDLE
5340-01-088-4737INTERCHANGEABLE
HANDLE,BOW
1639
5905-01-096-3677INTERCHANGEABLE
RESISTOR
1639
4930-01-312-6829INTERCHANGEABLE
ROLLER ASSEMBLY,HOSE REEL
1639
5985-01-313-7839INTERCHANGEABLE
COUPLER,ROTARY,RADIO FREQUENCY
8115-01-624-9697INTERCHANGEABLE
DIVIDER,TRAY CHEST
1639

Frequently Asked Questions

What is NSN 8475-01-255-7490?

NSN 8475-01-255-7490 is a Hood Assembly,anti-Exposure, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 8475 (No Item Name Available). Status: active.

What are the part numbers for NSN 8475-01-255-7490?

NSN 8475-01-255-7490 has 4 cross-referenced part numbers: 1639AS100-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 8475PL0846755 (Jednolity Indeks Materialowy - Uniform Material Index), MIL-H-81843 (Federal Specifications Promulgated by General Services Administration Washington DC), 1639 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).

What NSN replaces 8475-01-255-7490?

There are 12 known substitutes for 8475-01-255-7490: 5340-00-042-8531, 5950-00-083-0681, 5330-00-251-3229 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1639AS100-1?

Key specifications for 1639AS100-1: End Item Identification: INF LATEABLE SUIT; Procurement Group Code: 25845. 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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