Home · NSN 00-528-5659

NSN 00-528-5659 — Piston,Internal Combustion Engin

NIIN 00-528-5659 · unit of issue EA · AAC X (semi-active, no procurement planned) · source of supply SMS

NSN 00-528-5659 is the national stock number for a piston,internal combustion engin. It cross-references to 2 manufacturer part numbers from 1 CAGE code, including Norfolk Naval Shipyard; the primary is 6373. The unit of issue is EA and the FLIS list price is $23.28.

No government purchase of this stock number is on our record yet. No seller has confirmed stock of it here in the last 60 days; watching the number is free and the first listing triggers an alert.

2

part numbers from 1 CAGE

0

open solicitations, all agencies

0

government buys in 24 months

0

sellers with confirmed stock

Watch NSN 00-528-5659: an email the morning the government solicits or buys it, or an AD names it. Free.
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Cross-references

Part numbers filed against this stock number, with the manufacturer (CAGE) and the FLIS reference codes.

Part numberCAGEManufacturerReferenceVariation
75P236081601Norfolk Naval Shipyard3 · Design control (vendor)9 · Reference only
637381601Norfolk Naval Shipyard5 · Secondary reference9 · Reference only

Government demand

Nothing open right now. Watch this NSN and we will email you when it is solicited.

What the government paid

No government purchase on record for this NSN.

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices.

Sellers with confirmed stock

No seller has confirmed stock on this NSN in the last 60 days. Watch it and we will email you when one does, or request a quote on 6373.

Request 6373

No account needed. Goes to the sellers who carry this number or its family.

Listings appear here only while the seller has confirmed them within 60 days. Sellers: list this part free.

DLA management data

FLIS unit price
$23.28
Unit of issue
EA
Acquisition advice
X — Semi-active, no procurement planned
Source of supply
SMS
Effective
Oct 1, 2025

Item characteristics

Furnished Items
RETAINING RING GROOVE AND CARBON GROOVE
Overall Height
INCHES NOMINAL 4.969
Diameter
INCHES NOMINAL 3.625
Oil Passage Type
LOCATION NOT OTHERWISE SPECIFIED HOLE
Pinhole Diameter
INCHES MINIMUM 1.2475 AND INCHES MAXIMUM 1.2482
Surface Finish
FINISHED
Finished Size Designation
STANDARD
Skirt Type
SOLID
Ring Groove Quantity
5
Ring Groove Width
FOURTH RING INCHES MINIMUM 0.1875 AND INCHES MAXIMUM 0.1880
Ring Groove Width
FIFTH RING INCHES MINIMUM 0.1875 AND INCHES MAXIMUM 0.1880
Ring Groove Width
FIRST RING INCHES MINIMUM 0.1250 AND INCHES MAXIMUM 0.1260
Ring Groove Width
SECOND RING INCHES MINIMUM 0.1250 AND INCHES MAXIMUM 0.1260
Ring Groove Diameter
SECOND RING INCHES MINIMUM 3.223 AND INCHES MAXIMUM 3.233
Ring Groove Diameter
FIRST RING INCHES MINIMUM 3.263 AND INCHES MAXIMUM 3.273
Ring Groove Position Below Piston Pin
NUMBER 1,NUMBER 2,NUMBER 3,NUMBER 4,AND NUMBER 5 ALL RINGS
Distance From Pin Hole Center To Extreme Top
INCHES MINIMUM 2.997 AND INCHES MAXIMUM 3.000
Distance Between Pin Bosses
INCHES MINIMUM 1.440 AND INCHES MAXIMUM 1.480
Material
ALUMINUM
Ring Groove Position And Quantity
R 1,NUMBER 2,NUMBER 3,NUMBER 4,AND NUMBER 5
Weight
OUNCES 40.000

Related stock numbers

Other NSNs filed under the same part numbers.

About this page

An NSN is 13 digits: the 4-digit Federal Supply Class and the 9-digit NIIN. Cross-references come from the federal logistics record; demand from DLA DIBBS, SAM.gov and FPDS; ADs from the Federal Register. Refreshed nightly. Market Pulse shows the whole market.

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