PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

82161Muzzle Break,alingment Guage

Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc · NSN 5220-01-525-9901 · FSC 5220 · No Item Name Available
Verified by PartsTable
NSN 5220-01-525-9901 — this item is cataloged by the U.S. Government under National Stock Number 5220-01-525-9901. Primary manufacturer part number: 82161.
Features
  • Muzzle Break,alingment Guage — FSC 5220
  • General Characteristics Item Description: O-I DRILL ROD; 0.595 IN MIN, 0.600 IN MAX OUTSIDE DIA; 0.500 IN INSIDE DIA IN
  • 1 verified cross-reference
  • Primary manufacturer: Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc
Applications
  • Quality assurance and inspection
  • Precision measurement and calibration
  • Laboratory and test equipment
General Description

The Muzzle Break,alingment Guage, cataloged under National Stock Number 5220-01-525-9901, is classified within Federal Supply Class 5220 (No Item Name Available) of the Measuring Tools group. The primary manufacturer of record is Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc. Government technical data includes 1 verified specification, 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5220-01-525-9901
Primary Part Number82161
Item NameMuzzle Break,alingment Guage
FSC / FSG5220 / 52 — No Item Name Available
ManufacturerBarrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc
StatusACTIVE
General Characteristics Item DescriptionO-I DRILL ROD; 0.595 IN MIN, 0.600 IN MAX OUTSIDE DIA; 0.500 IN INSIDE DIA IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5305-00-025-765782161 INTERCHANGEABLE
Setscrew
Hamilton Sundstrand Corporation Dba Collins Aerospace
2530-00-278-2248 INTERCHANGEABLE
Wheel Assembly,pneumatic Tire
3520-00-359-7978 INTERCHANGEABLE
Plunger
5955-01-088-2904SM-A-942087 INTERCHANGEABLE
Crystal Unit,quartz
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
2930-01-163-8153159490-3-3 INTERCHANGEABLE
Cooler,lubricating Oil,engine
Honeywell International Inc. Div Aerospace - Torrance
5325-01-460-5611 INTERCHANGEABLE
Ring,retaining
Cross-Reference Index
Part NumberManufacturer
82161 PRIMARY Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc (USA)
Related Parts
5305-00-025-7657INTERCHANGEABLE
SETSCREW
82161
2530-00-278-2248INTERCHANGEABLE
WHEEL ASSEMBLY,PNEUMATIC TIRE
3520-00-359-7978INTERCHANGEABLE
PLUNGER
5955-01-088-2904INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
SM-A-942087
2930-01-163-8153INTERCHANGEABLE
COOLER,LUBRICATING OIL,ENGINE
159490-3-3
5325-01-460-5611INTERCHANGEABLE
RING,RETAINING

Frequently Asked Questions

What is NSN 5220-01-525-9901?

NSN 5220-01-525-9901 is a Muzzle Break,alingment Guage, manufactured by Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc, classified under FSC 5220 (No Item Name Available). Status: active.

What are the part numbers for NSN 5220-01-525-9901?

NSN 5220-01-525-9901 has 1 cross-referenced part number: 82161 (Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc).

What NSN replaces 5220-01-525-9901?

There are 6 known substitutes for 5220-01-525-9901: 5305-00-025-7657, 2530-00-278-2248, 3520-00-359-7978 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 82161?

Key specifications for 82161: General Characteristics Item Description: O-I DRILL ROD; 0.595 IN MIN, 0.600 IN MAX OUTSIDE DIA; 0.500 IN INSIDE DIA 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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