C9268-1

Safety Relief Valve

This page provides complete and verified information for part number C9268-1, NSN 4820-01-059-3527

You’ll find detailed technical specifications, product attributes, condition classification, and real-time stock availability. All data is based on official records and meets industry standards for defense, aerospace, and industrial sourcing. Whether you’re performing a parts audit, validating compliance, or preparing a purchase order, this part listing supports accurate and efficient procurement.

C9268-1
Federal Supply Group
Valves
Federal Supply Classification
4820 Nonpowered Valves
National Stock Number
4820-01-059-3527
Item Name Code
05488
Assigment Date
04/10/1978 (48 years ago)

A manually or power operated valve having three or more ports. The direction of the flow through the various ports is controlled by either one or more reciprocating slide(s) or spool(s) with recess areas which mate with ports in an integral or replaceable ported sleeve, or one or more poppet(s). It is designed to change the direction of fluid flow from one valve port to another. An off (no flow) position is not a flow pattern. The valve is designed to actuate various components of a fluid system. A power operated valve may have a manual override. For items which stop, start, or change the flow of fluid, see: valve, solenoid. Excludes:valve, plug. See also servovalve, hydraulic; body section, working, linear directional control valve; and valve assembly.

3b 2nd end thread class, 275.0 fahrenheit single response maximum operating temp, 3a 1st end thread class, poppet flow control device, right-hand all ends thread direction

Characteristics

Below are the official specifications and performance details for this part, including technical data, material composition, and compliance information.

Thread Class
3a 1st end
Thread Class
3b 2nd end
Thread Direction
right-hand all ends
Flow Control Device
poppet
Maximum Operating Temp
275.0 fahrenheit single response
Minimum Operating Temp
-65.0 fahrenheit
Connection Style
external seat for gasket seal (boss) 1st end
Connection Style
gasket seal(boss) 2nd end
Valve Operation Method
automatic
Connection Type
threaded external boss 1st end
Connection Type
threaded internal boss 2nd end
Thread Quantity Per Inch
20 all ends
Nominal Thread Size
0.438 inches all ends
Opening Pressure Setting
3.3 pounds per square inch
Material
aluminum alloy 2024 body
Style Designator
straight thru note: to be used for valve bodies of one section only.
Thread Series Designator
unj all ends

Classification Data

Detailed NSN information including identification codes, classification data, and key indicators used for cataloging, logistics, and supply management.

Type of Item Identification
1 - Full descriptive item identification
Demilitarization
A - Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Criticality
X - The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Federal Item Identification Guide
A046B0
Precious Metals Indicator
U - Precious metal content is unknown
Pseudo Item Name Code
0005488
Hazardous Material Indicator
N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
Schedule B Code
8481400000

Freight Information

Comprehensive freight classifications, shipping codes, and handling specifications for domestic and international transport compliance.

Major Organizational Entity
SU
National Motor Freight Classification Item Number
127220
National Motor Freight Classification Sub-Item Number
X
Uniform Freight Classification Item Number
64490
National Motor Freight Class Rating
P - 77.5
Less than Car Load Rating
P - 77.5
Water Commodity
594 - Pumps and parts, (machinery and parts),(less than 35 feet)
Type of Cargo
Z - No special type of cargo code applicable
Special Hand
Z - Other or no special handling required (sh)
Air Dimension
A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.
Air Commodity
VZ -
National Motor Freight Description
pressure reg/red/relief valves noi

FAQs

Get insights on installation procedures, operating conditions, care instructions, industry regulations, and common issues. FAQs below provide key information for C9268-1

What is the FSCG of the NSN 4820-01-059-3527?
The FSCG of the NSN 4820-01-059-3527 is 4820
Does the NSN 4820-01-059-3527 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-01-059-3527 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 4820-01-059-3527 contain precious materials?
Precious metal content is unknown
Does NSN 4820-01-059-3527 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 4820-01-059-3527 was assigned to the Federal Catalog?
It was assigned 48 years ago, on Mon, Apr 10, 1978

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