PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

561-31Lining,helmet,shock Absorbing

Avox Systems Inc Dba Avox Systems Inc · NSN 8475-00-061-1333 · FSC 8475 · No Item Name Available
Verified by PartsTable
NSN 8475-00-061-1333 — this item is cataloged by the U.S. Government under National Stock Number 8475-00-061-1333. Primary manufacturer part number: 561-31.
Features
  • Lining,helmet,shock Absorbing — FSC 8475
  • Garment Size: LARGE
  • Fiber Material: POLYSTYRENE MAIN BODY
  • Material: PLASTIC POLYSTYRENE MAIN BODY
  • Headwear Attachment Method: ADHESIVE
  • Thickness: 0.500 INCHES IN
  • 1 verified cross-reference
  • Primary manufacturer: Avox Systems Inc Dba Avox Systems Inc
Applications
  • Applications requiring Plastic Polystyrene Main Body construction
General Description

The Lining,helmet,shock Absorbing, cataloged under National Stock Number 8475-00-061-1333, 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 Avox Systems Inc Dba Avox Systems Inc. Government technical data includes 5 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN8475-00-061-1333
Primary Part Number561-31
Item NameLining,helmet,shock Absorbing
FSC / FSG8475 / 84 — No Item Name Available
ManufacturerAvox Systems Inc Dba Avox Systems Inc
StatusACTIVE
Garment SizeLARGE
Fiber MaterialPOLYSTYRENE MAIN BODY
MaterialPLASTIC POLYSTYRENE MAIN BODY
Headwear Attachment MethodADHESIVE
Thickness0.500 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5360-00-317-352756131 INTERCHANGEABLE
Spring,helical,compression
Mcneil Ohio Corp
5950-00-645-443056-131 INTERCHANGEABLE
Coil,telephone
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
5120-01-300-339856-131 INTERCHANGEABLE
Punch Block Tool
Stancil Corp
8465-01-621-941256131 INTERCHANGEABLE
Case,handcuffs
Armament Systems and Procedures Inc
Cross-Reference Index
Part NumberManufacturer
561-31 PRIMARY Avox Systems Inc Dba Avox Systems Inc (USA)
Related Parts
5360-00-317-3527INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
56131
5950-00-645-4430INTERCHANGEABLE
COIL,TELEPHONE
56-131
5120-01-300-3398INTERCHANGEABLE
PUNCH BLOCK TOOL
56-131
8465-01-621-9412INTERCHANGEABLE
CASE,HANDCUFFS
56131

Frequently Asked Questions

What is NSN 8475-00-061-1333?

NSN 8475-00-061-1333 is a Lining,helmet,shock Absorbing, manufactured by Avox Systems Inc Dba Avox Systems Inc, classified under FSC 8475 (No Item Name Available). Status: active.

What are the part numbers for NSN 8475-00-061-1333?

NSN 8475-00-061-1333 has 1 cross-referenced part number: 561-31 (Avox Systems Inc Dba Avox Systems Inc).

What NSN replaces 8475-00-061-1333?

There are 4 known substitutes for 8475-00-061-1333: 5360-00-317-3527, 5950-00-645-4430, 5120-01-300-3398 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 561-31?

Key specifications for 561-31: Garment Size: LARGE; Fiber Material: POLYSTYRENE MAIN BODY; Material: PLASTIC POLYSTYRENE MAIN BODY; Headwear Attachment Method: ADHESIVE. 5 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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