PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

L3Protector,hearing

Honeywell Safety Products Usa, Inc. · NSN 4240-00-691-5617 · FSC 4240 · No Item Name Available
Verified by PartsTable
NSN 4240-00-691-5617 — this item is cataloged by the U.S. Government under National Stock Number 4240-00-691-5617. Primary manufacturer part number: L3.
Features
  • Protector,hearing — FSC 4240
  • Body Style: HEADSET, COVERED
  • 4 verified cross-references
  • Primary manufacturer: Honeywell Safety Products Usa, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Protector,hearing, cataloged under National Stock Number 4240-00-691-5617, 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 Honeywell Safety Products Usa, Inc.. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4240-00-691-5617
Primary Part NumberL3
Item NameProtector,hearing
FSC / FSG4240 / 42 — No Item Name Available
ManufacturerHoneywell Safety Products Usa, Inc.
StatusCANCELLED
Body StyleHEADSET, COVERED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
9515-00-130-3534 INTERCHANGEABLE
Strip,metal
3455-00-140-3049155810 INTERCHANGEABLE
File,rotary
Jarvis Cutting Tools Inc
3120-00-168-0625L3 INTERCHANGEABLE
Bearing,sleeve
Circor Naval Solutions Llc Dba Warren Pumps
5120-00-189-29935120-00-189-2993 INTERCHANGEABLE
Key,socket Head Screw
General Services Administration Federal Supply Service
5120-00-288-8850 INTERCHANGEABLE
Wrench,spanner
5342-00-489-638652C8394-8 INTERCHANGEABLE
Pad,leveling
Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba
5940-00-725-3658L3 INTERCHANGEABLE
Terminal Board
Powers Holdings Inc Dba Fire Brick Engineers Co Div Curtis Industries
9150-00-973-9504L3 INTERCHANGEABLE
Penetrating Oil
Radiator Specialty Company
6140-01-024-8980 INTERCHANGEABLE
Battery,storage
6230-01-110-3829ELSQ INTERCHANGEABLE
Floodlight,electric
Lithonia Lighting National Services Industries Inc Div
Cross-Reference Index
Part NumberManufacturer
10341872 Nimikkeistokeskus Ncb Finland (FIN)
L3 PRIMARY Honeywell Safety Products Usa, Inc. (USA)
SB 258 Dalloz Safety (USA)
SB 258 Survivair Corp Sub of Comasec Inc (USA)
Related Parts
9515-00-130-3534INTERCHANGEABLE
STRIP,METAL
3455-00-140-3049INTERCHANGEABLE
FILE,ROTARY
155810
3120-00-168-0625INTERCHANGEABLE
BEARING,SLEEVE
L3
5120-00-189-2993INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5120-00-189-2993
5120-00-288-8850INTERCHANGEABLE
WRENCH,SPANNER
5342-00-489-6386INTERCHANGEABLE
PAD,LEVELING
52C8394-8
5940-00-725-3658INTERCHANGEABLE
TERMINAL BOARD
L3
9150-00-973-9504INTERCHANGEABLE
PENETRATING OIL
L3
6140-01-024-8980INTERCHANGEABLE
BATTERY,STORAGE
6230-01-110-3829INTERCHANGEABLE
FLOODLIGHT,ELECTRIC
ELSQ
6625-01-133-1962INTERCHANGEABLE
PLUG-IN UNIT,ELECTRICAL-ELECTRON
L3
5330-01-230-2452INTERCHANGEABLE
GASKET
L3

Frequently Asked Questions

What is NSN 4240-00-691-5617?

NSN 4240-00-691-5617 is a Protector,hearing, manufactured by Honeywell Safety Products Usa, Inc., classified under FSC 4240 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4240-00-691-5617?

NSN 4240-00-691-5617 has 4 cross-referenced part numbers: 10341872 (Nimikkeistokeskus Ncb Finland), L3 (Honeywell Safety Products Usa, Inc.), SB 258 (Dalloz Safety), SB 258 (Survivair Corp Sub of Comasec Inc).

What NSN replaces 4240-00-691-5617?

There are 12 known substitutes for 4240-00-691-5617: 9515-00-130-3534, 3455-00-140-3049, 3120-00-168-0625 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of L3?

Key specifications for L3: Body Style: HEADSET, COVERED. 1 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4240-00-691-5617 still in active supply?

NSN 4240-00-691-5617 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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