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4820-01-256-0844

Pressure Relief Safety Head

4820012560844 012560844 MRK-4"-600LBANSI-ASSYGI-304SST D4020

An item of varying shape and size consisting of a metallic body which incloses a nonreusable metallic or nonmetallic disk(s), which is designed and calibrated to burst at a given pressure. It may be used independently, or in conjunction with relief valves to relieve overpressure, and to protect relief valve(s) from corrosive conditions. Excludes VALVE, SAFETY RELIEF and PLUG, FUSIBLE. For items furnished with a disk, see HEAD AND DISK, SAFETY, PRESSURE RELIER. View more Pressure Relief Safety Head

4820-01-256-0844 HEAD,SAFETY,PRESSURE RELIEF 4820012560844 012560844

Managed by United States
NSN Created on 31 May 1987
Data Last Changed
May 2023
NATO Update Count
5
NATO Data Quality
4820-01-256-0844 HEAD,SAFETY,PRESSURE RELIEF 4820012560844 012560844 1/1
NSN 4820-01-256-0844 (Generic Image) 1/1

4820-01-256-0844 Stock and Availability Marketplace 4820-01-256-0844

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4820-01-256-0844 Demil Restrictions 4820-01-256-0844

DEMIL: F | DEMILI: | CRITICALITY: Y | HMIC: N | PMIC: A | EDC: | ADPEC: 0

4820-01-256-0844 is a Pressure Relief Safety Head that does not have a nuclear hardened feature, but does have another critical feature or features such as tolerance, fit restriction or application. This item is a US Munitions List or Commerce Control List Item where the Item Manager, Equipment Specialist or Product Specialist must provide special demilitarization instructions. This item is not suspected to be hazardous. This item does not contain a precious metal.

4820-01-256-0844 HTS and ScheduleB Import and Export 4820-01-256-0844

4820-01-256-0844 End Users End Users 4820-01-256-0844

US Navy (N1HE)
Effective Date:
1 Apr 1991
Supplementary Receivers:
GG

4820-01-256-0844 Manufacturers Approved Sources 4820-01-256-0844

4820-01-256-0844 Technical Data Datasheet 4820-01-256-0844

Characteristic
Specifications
FIIG
A512U0
Criticality Code Justification [CRTL]
Zzzy
Reference Number Differentiating Characteristics [ZZZY]
Material Will Be In Accordance With Ships Parts Control Center Activity Hx Quality Control,Manufacturing And Testing Specifications

4820-01-256-0844 Management Data Management Data 4820-01-256-0844

Effective Date
Organization
Unit of Issue
Unit Price
Qty Unit Pack
Oct 2022
Department of the Navy (DN)
EA
Subscribe
1
Oct 2021
Department of the Navy (DN)
EA
Subscribe
1
Oct 2020
Department of the Navy (DN)
EA
Subscribe
1
Oct 2019
Department of the Navy (DN)
EA
Subscribe
1
MOE
USC
Code
Statement
Order of Use
Jump To Code
Qty Per Assy
UOM
Technical Document
Quantative Expression
Department of the Navy (DN)
I
E
Replaced By 4820-01-337-4085
Department of the Navy (DN)
N
E
Replaced By 4820-01-337-4085

Navy Navy

Cognizance:
1H
Consumable material assigned to NAVICP MECH for inventory management
Naval Inventory Control Point, Mechanicsburg
Special Material ID:
X3
Nuclear Reactor Plant (NRP) material under the technical cognizance of the NAVSEA 08 special designed, manufactured and/or treated for use in a NRP or controls thereof. This category includes all other NRP items which are not coded X2 or X4.
Issue, Repair, Requisition Restriction Code:
C0
Critical item. Do not issue. Refer all requests to cognizant manager

4820-01-256-0844 Related Items NATO Stock Numbers Related to 4820-01-256-0844

4820-01-256-0844 Freight Data Freight Information 4820-01-256-0844

4820-01-256-0844 has freight characteristics.It has a National Motor Freight Classification (NMFC) of 051080. A Sub NMFC of Z. It has a NMFC Description of FAUCETS,BIBCOCKS,GATES VALVES. 4820-01-256-0844 is rated as a variable freight class when transported by Less-Than Truckload (LTL) freight. 4820-01-256-0844 is rated as class 60 when transported by Less-Than Carload (LCL) rail or ocean freight. It has a Uniform Freight Classification (UFC) number of 29300 which rates the freight between FCL and LCL. It has a Water Commodity Code (WCC) of 594 for ocean manifesting and military sealift. 4820-01-256-0844 is not classified as a special type of cargo when transported by water. 4820-01-256-0844 is not a consolidation and does not exceed 84" in any dimension. It should be compatible with a standard 72" Aircraft Cargo Door when transported by air.

4820-01-256-0844 Packaging Data Packaging Data 4820-01-256-0844

Responsible Activity
Packaging Data Source
Primary Inventory Control Activity (PICA)
Packaging Data does not meet current MIL-STD-2073-1E
Storage Environment
Heated General Purpose – Heated 40 F and above

Item Pack Level (Unpackaged)

Item Size
Item Weight
Characteristics
Weight/Dimensions Category
Fragility
Item Preservation
--
--
--
Over 10lb
Less than 85G
Special Requirement

Unit Pack Level (Packaged)

Quantity per Pack
Unit Size
Unit Weight
Unit Cube
Preservation Method
Cleaning/Drying
1
9.0" H x 8.0" W x 4.0" L
--
--
Physical Protection
Any Suitable Process
Preservation Material
Wrapping Material
Cushioning/Dunnage
Cushioning Thickness
Container
Special Marking
No Requirement
No Requirement
A-A-1898, Grade II, Water Resistant Cellulosic Cushioning
1/2 inch thick
ASTM-D5118, Type CF, Class Weather-Resistant, Corrugated Fiberboard Box
No special marking

Intermediate Pack Level

Quantity of Unit Packs
Container
--
No Requirement