PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

370-1021Plug,ear

3m Company · NSN 6515-01-552-0229 · FSC 6515 · No Item Name Available
Verified by PartsTable
NSN 6515-01-552-0229 — this item is cataloged by the U.S. Government under National Stock Number 6515-01-552-0229. Primary manufacturer part number: 370-1021.
Features
  • Plug,ear — FSC 6515
  • 6 verified cross-references
  • Primary manufacturer: 3m Company
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Plug,ear, cataloged under National Stock Number 6515-01-552-0229, is classified within Federal Supply Class 6515 (No Item Name Available) of the Medical, Dental, and Veterinary Equipment group. The primary manufacturer of record is 3m Company. This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: PG.

Technical Specifications
ParameterValue
NSN6515-01-552-0229
Primary Part Number370-1021
Item NamePlug,ear
FSC / FSG6515 / 65 — No Item Name Available
Manufacturer3m Company
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssuePG
Verified Substitutes 11
Plug,ear
5950-00-021-80043919 INTERCHANGEABLE
Transformer,radio Frequency
Pulse Engineering Inc
5910-00-101-5146 INTERCHANGEABLE
Capacitor,fixed,mica Dielectric
5355-00-355-95093919 INTERCHANGEABLE
Knob
Control Products Corporation
4440-00-421-95803919-7 INTERCHANGEABLE
Piston,dehydrator
Howell Laboratories Inc Dba Howell Laboratories Inc
3040-00-546-09424448341 INTERCHANGEABLE
Shaft,shouldered
The Boeing Company
5950-00-645-1634710862 INTERCHANGEABLE
Transformer,power
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
6240-00-946-9637 INTERCHANGEABLE
Lamp,incandescent
6930-01-042-6739C3919-5 INTERCHANGEABLE
Integrated Circuit
Crown Audio, Inc. Dba Crown International
5940-01-064-1564913122-B INTERCHANGEABLE
Terminal,stud
Concord Electronics, Inc.
Cross-Reference Index
Part NumberManufacturer
370-1021 Aearo Company 1 Dba Aearo Div Ao Safety Occupational Prescription Eyewear (USA)
COMBAT ARMS E.A.R 3m Company (USA)
COMBAT ARMS E.A.R Aearo Company 1 Dba Aearo Div Ao Safety Occupational Prescription Eyewear (USA)
370-1021 PRIMARY 3m Company (USA)
3919 Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia (USA)
6515NCM071462 Defense Medical Standardization Board (USA)
Related Parts
6515-01-552-0224SUCCESSOR
PLUG,EAR
5950-00-021-8004INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
3919
5910-00-101-5146INTERCHANGEABLE
CAPACITOR,FIXED,MICA DIELECTRIC
5355-00-355-9509INTERCHANGEABLE
KNOB
3919
4440-00-421-9580INTERCHANGEABLE
PISTON,DEHYDRATOR
3919-7
3040-00-546-0942INTERCHANGEABLE
SHAFT,SHOULDERED
4448341
5950-00-645-1634INTERCHANGEABLE
TRANSFORMER,POWER
710862
6240-00-946-9637INTERCHANGEABLE
LAMP,INCANDESCENT
6930-01-042-6739INTERCHANGEABLE
INTEGRATED CIRCUIT
C3919-5
5940-01-064-1564INTERCHANGEABLE
TERMINAL,STUD
913122-B
6520-01-180-3237INTERCHANGEABLE
CROWN,DENTAL,TEMPORARY

Frequently Asked Questions

What is NSN 6515-01-552-0229?

NSN 6515-01-552-0229 is a Plug,ear, manufactured by 3m Company, classified under FSC 6515 (No Item Name Available). Status: active.

What are the part numbers for NSN 6515-01-552-0229?

NSN 6515-01-552-0229 has 6 cross-referenced part numbers: 370-1021 (Aearo Company 1 Dba Aearo Div Ao Safety Occupational Prescription Eyewear), COMBAT ARMS E.A.R (3m Company), COMBAT ARMS E.A.R (Aearo Company 1 Dba Aearo Div Ao Safety Occupational Prescription Eyewear), 370-1021 (3m Company), 3919 (Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia) and 1 more.

What NSN replaces 6515-01-552-0229?

There are 11 known substitutes for 6515-01-552-0229: 6515-01-552-0224, 5950-00-021-8004, 5910-00-101-5146 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 370-1021?

Key specifications for 370-1021: Part Name Assigned by Controlling Agency: EAR PLUG COMBAT ARMS W/PISTOL GRIP MED 50PR; Special Features: COMBAT ARMS EAR PLUGS, WITH PISTOL GRIP; SIZE:MEDIUM; 50 INDIVIDUAL PAIRS; ALLOWS WEARERS TO HEAR LOW-LEVEL SOUNDS CRITICAL TO MISSION SAFETY (CONVERSATION, FOOT STEPS, RIFLE BOLTS, APPROACHING ENEMIES), YET PROVIDES INSTANT PROTECTION FROM HIGH LEVEL NOISES. 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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