Exhaust Muffler P/N 2520

Specifications

Inlet flange mounting hole diameter

Single Inlet Inches Minimum 0.532 and Inches Maximum 0.562

Inlet connection type

Single Inlet Flange

Center to center distance between mounting holes

1/8 In. C to C Dim. of Mtg Holes

Inlet flange shape

Single Inlet Square

Inlet flange mounting provision and quantity

Single Inlet Holes 4

Overall length

41.380 in (nominal)

Overall height

10.060–10.180 in

Material document and classification

Location Not Otherwise Specified MIL Spec Single Material Response -IL-S-46055

Surface treatment

Chromate

Outlet thread size

4-8

Outlet thread series designator

First Outlet NPT

Outlet thread direction

First Outlet Right-Hand

Material

Location Not Otherwise Specified Steel

Overall width

6.060–6.180 in

Thread location

First Outlet External

Coolant type

Air

Body shape

Oval

Operating position

Universal

Inlet location

Located AT B0TTOM in End Section of Body Single Inlet

Inlet projection length

Single Inlet Inches Nominal 2.500

Outlet projection length

First Outlet Inches Minimum 12.760 and Inches Maximum 13.000

Design type

Dry

Outlet location

Located AT Top in End Section of Body Opposite Inlet First Outlet

Inlet flange mounting provision spacing

4-1/8 In. C to C Dim. of Mtg Holes Single Inlet

Outlet connection type

First Outlet Threaded

From the federal catalog's item characteristics for this NSN. Confirm critical dimensions against your part or drawing before ordering.

Cross-reference part numbers

2520 71-4934

Shown for identification only. SECO can quote against any of these numbers.

Logistics data

Source: public FLIS/PUB LOG cataloging data.

Why buy from SECO

These quantities sit on our own shelves — we are a stocking supplier, not a broker sourcing after you order. Condition-coded stock, formal quotes with NSN/PN on the paperwork, POs and GPC welcome, fast U.S. shipping.

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FAQ

What is NSN 2990-00-221-5810?
NSN 2990-00-221-5810 (2990002215810) — Exhaust Muffler: SECO Parts has 2 in stock in Augusta, GA, on our own shelf. It is the NATO Stock Number for exhaust muffler in federal supply class 2990 (Miscellaneous Engine Accessories, Nonaircraft).

Is NSN 2990-00-221-5810 available?
SECO Parts has 2 in stock in Augusta, GA — order or request a quote below.

How much does NSN 2990-00-221-5810 cost?
The government catalog (FEDLOG) lists NSN 2990-00-221-5810 at $6,201.24 per each. That is a public reference, not SECO's price: SECO quotes each request, usually the same business day, and surplus parts often quote below or above it.

What part numbers cross-reference to NSN 2990-00-221-5810?
Part numbers that cross-reference this NSN include 2520, 71-4934. SECO can quote against any of them.