Boss Reducer

NSN: 4730-00-187-3588 | Model: 991915

A straight fitting having a boss connection of a different size at each end. Both connections have external or internal machine threads (straight threads other than pipe or hose series) and are designed to facilitate a gasket, preformed packing, washer, or the like to form a seal at the boss. Excludes bushing (as modified).

NSN Properties and Flags

NATO Stock Number

4730-00-187-3588

DEMIL

Thread Class

3a all ends

Reducer Type

Concentric

Maximum Operating Temp

275.0 degrees fahrenheit single response

End Application

Aircraft fluid systems

Connection Style

Flared w/ gasket seal (boss) all ends

Connection Type

Threaded external boss all ends

Maximum Operating Pressure

3000.0 pounds per square inch single response

Thread Size

0.875 inches 1st end

Nominallength

1.750 inches

Material

Aluminum alloy 2014

Material Specification

Qq-a-225/4 federal specification single material response

Surface Treatment

Anodize

Thread Series Designator

Unjf 1st end

Specification Data

88044-an919 government standard

Recent Solicitations

Solicitation	Return by Date	Buyer Code	Quantity
SPE7M320T4882	2020-02-03	PMCM4	805 EA
SPE7M317T7166	2017-08-17	PMCM1	1184 EA

Inventory Check

The last inventory check on this NSN was done on 02/01/2024. Due to rapid changes in inventory this may not be the current stock qty.

New Surplus: 87
Serviceable: 2
New: 946
As Removed: 3

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

Certified Quality Assurance

ISO 9001:2015 + AS9120B
Counterfeit Parts Prevention
100% Product Inspections
7 Year Record Retention
On Time Delivery
HAZMAT Certified
Worldwide Shipping

NSN 4730-00-187-3588 Datasheet

Supply Class (FSC):

Railing Fittings Lubrication Tube Pipe Hose

Cross Reference:

991915
AN919-150
AS4841
AS5174
332-2031-160
AS5174D1008
AN919-15D
MS24399D16

Cage Codes:

Earls Supply Co (CAGE 65023)
Aeronautical Standards Group (CAGE 88044)
Society Of Automotive Engineers Inc (CAGE 81343)
Rockwell Collins, Inc. (CAGE 13499)
Crown Fitting Co Inc (CAGE 22995)

Replacements:

4730-00-187-3588 replaces 4730-00-684-7450
4730-00-187-3588 replaces 4730-00-835-7277

Schedule B & Trade:

Schedule B: 7609000000 (NAICS 332919)

Aluminum tube or pipe fittings (couplings, elbows sleeves)
SITC: 68427

Aluminum and aluminum alloy tube and pipe fittings (e.G. Couplings, elbows and sleeves)
End Use: 12300

Finished metal shapes

Identification:

HMIC

N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

PMIC

U - Precious metal content is unknown

CRITL

- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:

NMFC:

051400 - Pipe fittings aluminum
WCC:

576 - Metal and metal products, nos, (less than 35 feet)
SHC:

9 - Other or no special handling required (sh)
ADC:

A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.
ACC:

B - Construction materials: includes paint and related materials, prefabricated building, wood products, metal and composition mater
LTL:

P - 77.5
TCC:

Z - No special type of cargo code applicable

NSN Management Codes:

SOS
Sms
AAC
D
Quantity per pack
1
Unit of Measure
Ea
Shelf Life
N/A
Classification Control
U
MGMT_CTL
J22bxx-
Repariability
This is a nonreparable item. if condemned or economically unserviceable, then dispose at the level authorized replace the item.

Questions & Answers:
What are the historical prices recorded for this stock number?
Historical data shows pricing from $25.35 to $42.26..
Does NSN 4730-00-187-3588 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Army, Department Of The Air Force, U.s. Marine Corps, Department Of The Navy, National Aeronautics and Space Administration, Austria, Slovenia, Poland, Bulgaria, Brazil, Spain, Columbia, Israel, Singapore, Kuwait, Malaysia, Thailand, Australia, Belgium, Canada, New Zealand, France, Germany, Republic Of Korea, United Kingdom, Netherlands, Portugal, Italy, Denmark, Norway, Greece, and Turkey
What is the NIIN of NSN 4730-00-187-3588?
001873588 or 00-187-3588
Does NSN 4730-00-187-3588 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 4730-00-187-3588?
Solicitation SPE7M320T4882 for qty 805 on 01/23/2020
When was this national stock number assigned to the federal catalog?
Jan 01, 1961