PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8561-00Guide,spring

Avox Systems Inc Dba Avox Systems Inc · NSN 4240-00-508-2128 · FSC 4240 · No Item Name Available
Verified by PartsTable
NSN 4240-00-508-2128 — this item is cataloged by the U.S. Government under National Stock Number 4240-00-508-2128. Primary manufacturer part number: 8561-00.
Features
  • Guide,spring — FSC 4240
  • General Characteristics Item Description: ALUMINUM ALLOY,3/4 IN. O/A DIA,5/32 IN. O/A LG IN
  • 2 verified cross-references
  • Primary manufacturer: Avox Systems Inc Dba Avox Systems Inc
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
General Description

The Guide,spring, cataloged under National Stock Number 4240-00-508-2128, is classified within Federal Supply Class 4240 (No Item Name Available) of the Fire Fighting, Rescue, and Safety Equipment group. The primary manufacturer of record is Avox Systems Inc Dba Avox Systems Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references 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
NSN4240-00-508-2128
Primary Part Number8561-00
Item NameGuide,spring
FSC / FSG4240 / 42 — No Item Name Available
ManufacturerAvox Systems Inc Dba Avox Systems Inc
StatusACTIVE
General Characteristics Item DescriptionALUMINUM ALLOY,3/4 IN. O/A DIA,5/32 IN. O/A LG IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
9330-00-003-61717000048549 INTERCHANGEABLE
Plastic Strip,pressure Sensitive
3m Company
9330-00-124-37307000001176 INTERCHANGEABLE
Plastic Strip,pressure Sensitive
3m Company
7510-00-145-01717100012021 INTERCHANGEABLE
Tape,pressure Sensitive Adhesive
3m Company
9330-00-169-64077000048548 INTERCHANGEABLE
Plastic Strip,pressure Sensitive
3m Company
8030-00-228-0528 INTERCHANGEABLE
Filler,dent,metal Surface
2805-00-356-1196 INTERCHANGEABLE
Cap
5960-00-402-7564 INTERCHANGEABLE
Electron Tube
7510-00-888-47561812M INTERCHANGEABLE
Tape,pressure Sensitive Adhesive
Valley Industrial Products Inc
7510-01-071-53557000048547 INTERCHANGEABLE
Tape,pressure Sensitive Adhesive
3m Company
5995-01-097-9008 INTERCHANGEABLE
Lead,electrical
Cross-Reference Index
Part NumberManufacturer
8561-00 PRIMARY Avox Systems Inc Dba Avox Systems Inc (USA)
8561 Avox Systems Inc Dba Avox Systems Inc (USA)
Related Parts
9330-00-003-6171INTERCHANGEABLE
PLASTIC STRIP,PRESSURE SENSITIVE
7000048549
9330-00-124-3730INTERCHANGEABLE
PLASTIC STRIP,PRESSURE SENSITIVE
7000001176
7510-00-145-0171INTERCHANGEABLE
TAPE,PRESSURE SENSITIVE ADHESIVE
7100012021
9330-00-169-6407INTERCHANGEABLE
PLASTIC STRIP,PRESSURE SENSITIVE
7000048548
8030-00-228-0528INTERCHANGEABLE
FILLER,DENT,METAL SURFACE
2805-00-356-1196INTERCHANGEABLE
CAP
5960-00-402-7564INTERCHANGEABLE
ELECTRON TUBE
7510-00-888-4756INTERCHANGEABLE
TAPE,PRESSURE SENSITIVE ADHESIVE
1812M
7510-01-071-5355INTERCHANGEABLE
TAPE,PRESSURE SENSITIVE ADHESIVE
7000048547
5995-01-097-9008INTERCHANGEABLE
LEAD,ELECTRICAL
9330-01-101-7505INTERCHANGEABLE
PLASTIC STRIP,PRESSURE SENSITIVE
5950-01-112-6706INTERCHANGEABLE
COIL,RADIO FREQUENCY

Frequently Asked Questions

What is NSN 4240-00-508-2128?

NSN 4240-00-508-2128 is a Guide,spring, manufactured by Avox Systems Inc Dba Avox Systems Inc, classified under FSC 4240 (No Item Name Available). Status: active.

What are the part numbers for NSN 4240-00-508-2128?

NSN 4240-00-508-2128 has 2 cross-referenced part numbers: 8561-00 (Avox Systems Inc Dba Avox Systems Inc), 8561 (Avox Systems Inc Dba Avox Systems Inc).

What NSN replaces 4240-00-508-2128?

There are 12 known substitutes for 4240-00-508-2128: 9330-00-003-6171, 9330-00-124-3730, 7510-00-145-0171 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8561-00?

Key specifications for 8561-00: General Characteristics Item Description: ALUMINUM ALLOY,3/4 IN. O/A DIA,5/32 IN. O/A LG 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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