PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6571-00O-Ring

Lawler Manufacturing Company, Inc. · NSN 5331-00-556-7176 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-556-7176 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-556-7176. Primary manufacturer part number: 6571-00.
Features
  • O-Ring — FSC 5331
  • Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
  • Center Hole Diameter: 2.847 INCHES MINIMUM AND 2.877 INCHES MAXIMUM IN
  • 4 verified cross-references
  • Primary manufacturer: Lawler Manufacturing Company, Inc.
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-556-7176, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Lawler Manufacturing Company, Inc.. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-00-556-7176
Primary Part Number6571-00
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerLawler Manufacturing Company, Inc.
StatusACTIVE
Cross-Sectional Height0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
Center Hole Diameter2.847 INCHES MINIMUM AND 2.877 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4910-00-074-0411A6571 INTERCHANGEABLE
Socket,coupling
Stewart Avionics Inc
5940-00-926-820612751B INTERCHANGEABLE
Terminal,feedthru
Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect
2540-01-062-71666P1290 INTERCHANGEABLE
Filter
Caterpillar Inc Div Caterpillar Defense
5355-01-124-2084657-1 INTERCHANGEABLE
Knob
Kurz-Kasch Inc
4730-01-163-05993890-203-130 INTERCHANGEABLE
Nut,union
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
6640-01-504-30436571 INTERCHANGEABLE
Test Tube
Corning Incorporated Dba Corning Incorporated
5315-01-554-66316571 INTERCHANGEABLE
Pin,grooved,headed
Ameridrives International, Llc Dba Ameridrives International Llc
Cross-Reference Index
Part NumberManufacturer
71996PC24 Lawler Manufacturing Company, Inc. (USA)
6571-00 PRIMARY Lawler Manufacturing Company, Inc. (USA)
6571 Zf Industrieantriebe Witten Gmbh (DEU)
A6571 Lawler Manufacturing Company, Inc. (USA)
Related Parts
4910-00-074-0411INTERCHANGEABLE
SOCKET,COUPLING
A6571
5940-00-926-8206INTERCHANGEABLE
TERMINAL,FEEDTHRU
12751B
2540-01-062-7166INTERCHANGEABLE
FILTER
6P1290
5355-01-124-2084INTERCHANGEABLE
KNOB
657-1
4730-01-163-0599INTERCHANGEABLE
NUT,UNION
3890-203-130
6640-01-504-3043INTERCHANGEABLE
TEST TUBE
6571
5315-01-554-6631INTERCHANGEABLE
PIN,GROOVED,HEADED
6571

Frequently Asked Questions

What is NSN 5331-00-556-7176?

NSN 5331-00-556-7176 is a O-Ring, manufactured by Lawler Manufacturing Company, Inc., classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-00-556-7176?

NSN 5331-00-556-7176 has 4 cross-referenced part numbers: 71996PC24 (Lawler Manufacturing Company, Inc.), 6571-00 (Lawler Manufacturing Company, Inc.), 6571 (Zf Industrieantriebe Witten Gmbh), A6571 (Lawler Manufacturing Company, Inc.).

What NSN replaces 5331-00-556-7176?

There are 7 known substitutes for 5331-00-556-7176: 4910-00-074-0411, 5940-00-926-8206, 2540-01-062-7166 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6571-00?

Key specifications for 6571-00: Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR; Center Hole Diameter: 2.847 INCHES MINIMUM AND 2.877 INCHES MAXIMUM IN. 3 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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