PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C-18661Fixture,piston Ring

Cooper Machinery Services Llc · NSN 5120-01-334-3236 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-334-3236 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-334-3236. Primary manufacturer part number: C-18661.
Features
  • Fixture,piston Ring — FSC 5120
  • Functional Description: USED IN CONJUNCTION WITH P/N 02-590-01-AN TO COMPRESS PISTON RINGS DURING PISTON INSERTION INTO LINER
  • 2 verified cross-references
  • Primary manufacturer: Cooper Machinery Services Llc
Applications
  • Field maintenance and repair
  • Facility maintenance operations
  • General-purpose hand tools
General Description

The Fixture,piston Ring, cataloged under National Stock Number 5120-01-334-3236, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Cooper Machinery Services Llc. 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-334-3236
Primary Part NumberC-18661
Item NameFixture,piston Ring
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerCooper Machinery Services Llc
StatusACTIVE
Functional DescriptionUSED IN CONJUNCTION WITH P/N 02-590-01-AN TO COMPRESS PISTON RINGS DURING PISTON INSERTION INTO LINER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5331-00-171-664962309-14 INTERCHANGEABLE
O-Ring
Arvinmeritor Inc
2520-00-495-709918-66-1 INTERCHANGEABLE
Shifter Fork,vehicular
Dana Corp Spicer Transmission Div
5325-00-619-0551 INTERCHANGEABLE
Grommet,nonmetallic
6145-00-669-6710 INTERCHANGEABLE
Wire,electrical
5950-01-005-0074986209-2B INTERCHANGEABLE
Reactor
Raytheon Company Dba Raytheon
5950-01-013-0280SM-C-416332 INTERCHANGEABLE
Coil,radio Frequency
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5340-01-478-7915K678031-7 INTERCHANGEABLE
Strap,retaining
Kaman Aerospace Corporation Dba Air Vehicles & Mro Division
Cross-Reference Index
Part NumberManufacturer
18661 Cooper Machinery Services Llc (USA)
C-18661 PRIMARY Cooper Machinery Services Llc (USA)
Related Parts
5331-00-171-6649INTERCHANGEABLE
O-RING
62309-14
2520-00-495-7099INTERCHANGEABLE
SHIFTER FORK,VEHICULAR
18-66-1
5325-00-619-0551INTERCHANGEABLE
GROMMET,NONMETALLIC
6145-00-669-6710INTERCHANGEABLE
WIRE,ELECTRICAL
5950-01-005-0074INTERCHANGEABLE
REACTOR
986209-2B
5950-01-013-0280INTERCHANGEABLE
COIL,RADIO FREQUENCY
SM-C-416332
5340-01-478-7915INTERCHANGEABLE
STRAP,RETAINING
K678031-7

Frequently Asked Questions

What is NSN 5120-01-334-3236?

NSN 5120-01-334-3236 is a Fixture,piston Ring, manufactured by Cooper Machinery Services Llc, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-334-3236?

NSN 5120-01-334-3236 has 2 cross-referenced part numbers: 18661 (Cooper Machinery Services Llc), C-18661 (Cooper Machinery Services Llc).

What NSN replaces 5120-01-334-3236?

There are 7 known substitutes for 5120-01-334-3236: 5331-00-171-6649, 2520-00-495-7099, 5325-00-619-0551 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of C-18661?

Key specifications for C-18661: End Item Identification: TRANSAMERICA DELAVAL INC. ENGINE AND COMPRESSOR DIV. MODEL R5V16 ENGINE; Functional Description: USED IN CONJUNCTION WITH P/N 02-590-01-AN TO COMPRESS PISTON RINGS DURING PISTON INSERTION INTO LINER. 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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