1. Home /
  2. Catalog /
  3. Nonpowered Valves /
  4. 4820-00-257-1666

4820-00-257-1666

Find complete technical information, availability, and procurement data for: 4820-00-257-1666

DODParts.com distributes related products varnishes dopes paints, aircraft parts and consumables, electrical parts, fittings and other components for the aerospace and defense industries. Submit the short price quote form for NSN 4820-00-257-1666 to receive an up to date pricing and availability quote by email.

4820-00-257-1666
Federal Supply Group
Valves
Federal Supply Classification
4820 Nonpowered Valves
National Stock Number
4820-00-257-1666
Item Name Code
05488
Assigment Date
06/18/1973 (53 years ago)

An item consisting of two or more individually insulated conductors (solid, stranded, or tinsel) of a definite length, with or without shielding, held together by lacing cord, metal bands, or similar type binding. The individual conductors are usually identified by color, or by alphabetic or numeric codes or symbols. The item may include fittings which provide for connection to other items. Excludes:items which are branched, forked, jacketed, sleeved, or contained in a common covering. Also excludes:cable assembly (as modified); harness, electrical equipment; lead assembly, electrical; and wiring harness, branched.

right-hand 1st end thread direction, inside screw bonnet type, threaded bonnet attachment method, 2a 1st end thread class, poppet flow control device

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class
2a 1st end
Thread Direction
right-hand 1st end
Flow Control Device
poppet
Bonnet Type
inside screw
Bonnet Attachment Method
threaded
Connection Style
external seat for gasket seal (boss) 1st end
Valve Operation Method
automatic
Connection Type
threaded external boss 1st end
Nominal Thread Size
0.562 inches 1st end
Material
aluminum alloy body
Material
steel flow control device
Surface Treatment
anodize
Style Designator
angle
Thread Series Designator
unf 1st end
Furnished Items And Quantity
1 gasket

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number Name
301525-1 Safety Relief Valve

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 4820-00-257-1666?
The FSCG of the NSN 4820-00-257-1666 is 4820
Does the NSN 4820-00-257-1666 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-00-257-1666 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 4820-00-257-1666 contain precious materials?
Precious metal content is unknown
Does NSN 4820-00-257-1666 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 4820-00-257-1666 was assigned to the Federal Catalog?
It was assigned 53 years ago, on Mon, Jun 18, 1973

Professional Distribution

Certified to meet the strict requirements of defense, aerospace, and hazardous materials distribution.

  • ITAR Registered
  • DDTC Registered
  • HAZMAT Certified
  • AS9120 Quality Standards
  • 100% Quality Inspections

You May Also Like

Browse other in-demand NSN parts sourced by professionals in defense, aerospace, and manufacturing sectors. Each component meets strict standards for quality and performance.

Pricing

Submit your request below and our team will respond quickly with up-to-date pricing, delivery estimates, and stock information:

ITAR Registered

Featured Parts

Explore our most requested parts, carefully selected based on customer demand and sourcing activity. Each listing provides current specifications, availability status, and item condition:

D-42060PC45
5315-01-019-2010
Headless Straight Pin
D-42060PC48
4710-00-541-5165
Metallic Tube
D-42060PC8
5340-01-133-5990
Rod End Clevis
D-42069-39
9340-00-268-9831
Observation Window
D-42069-40
5330-01-033-9092
Gasket
D-42075
4820-01-279-4560
Check Valve
D-42075-8
5340-01-286-7106
Rod End Clevis
D-42075 PIECE 17
4820-01-279-4560
Check Valve
D-42078 PIECE 1
4520-01-230-6832
Air Register
D-42078 PIECE 2
4530-00-073-9876
Burner Diffuser
D-42078 PIECE 20
5305-01-210-6223
Thumbscrew
D-42078 PIECE 26
4530-01-118-3755
Collar Stop
D-42078 PIECE 28
6240-00-617-9599
Incandescent Lamp
D-42078 PIECE 3
4710-01-230-6495
Metallic Tube
D-42078 PIECE 33
9340-00-268-9831
Observation Window