4820-00-871-8935

Description: Valve Seat

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Quality Assurance

We are commited to quality and satisfaction as a certified supplier in the aerospace and military industries.

  • Certificate of Conformity
  • QC Inspection prior to shipping
  • On time delivery
  • International Shipping Available
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MILSPEC: MIL-M-20164

 Export Restrictions

Any part(s) quoted or sold by MilSpec.parts and re-sold (to a third party) CANNOT be sold to a USA embargoed country, company, entity, or person(s). Depending on the ECCN, these commodities may require export license or exception. Diversion contrary to U.S. law is prohibited. Unless otherwise noted, this sale, order or quote may include Munitions List Items (MLI) or Commerce Controlled List Items (CCLI). MLI/CCLI property is controlled by the US Government and in many cases cannot be transferred (exported, sold or given) to a foreign country, a non-US Citizen/National or a non- Permanent US Resident without a valid State/Commerce Department export authorization. It is the responsibility of (the Purchaser) to determine what the applicable requirements may be, to obtain all necessary authorizations, licenses or approvals and are subject to both review and acceptance by MilSpec.parts. The use, disposition, export and re-export of the property covered or included in this sale, order or quote is subject to the provisions of law referenced in End-Use Certificate DLA form 1822, DEC 2001, including, but not limited to, the Arms Export Control Act (22 USC 2751 et seq.); Export Administration Act of 1979 (50 USC App. 2401 et seq.) as contained under Executive Order 12924; International Traffic in Arms Regulations (22 CFR 120 et seq.); Export Administration Regulations (15 CFR 730 et seq.); Foreign Assets Control Regulations (31 CFR 500 et seq.) and the Espionage Act (18 USC 793 et seq.)

MIL-M-20164 Valve Seat

Spec. Type Spec. Color Gloss Size
Material document and classification MIL-M-20164

4820-00-871-8935 Properties

  • NSN:
    4820-00-871-8935
  • Description:
    Valve Seat
  • Shelf Life:
    N/A
  • DEMIL:
    NO
  • UOM:
    1 EA
  • Thread Class:
    3a single threaded portion
  • Err Default:
    0.284 inches single threaded portion
  • Flange Diameter:
    1.250 inches
  • Body Inside Diameter:
    0.575 inches
  • Flange Seat To Disk End Height:
    0.120 inches
  • Under Flange Height:
    0.387 inches
  • Seat Angle In Deg:
    20.333
  • Thread Size:
    1.000 inches single threaded portion
  • Seating Surface Shape:
    Angular
  • Special Features:
    Used on 3/4 in. Size stop valve
  • Material:
    Nickel alloy
  • Material Specification:
    Mil-m-20164 military specification single material response
  • Style Designator:
    Threaded flanged
  • Thread Series Designator:
    Unef single threaded portion
Manufacturers and Part Numbers
Part Number
Brand
SC3549 3-4IN
The Walworth Company
54386
The Walworth Company
C38476
The Walworth Company
SS845-1889587
Naval Sea Systems Command
Major Organizational Entities (MOE)
Entity
MOE Code
MOE Rule
PICA
DSOR
User:
DEPARTMENT OF THE NAVY Dept. of the Navy
MOE_CD:
DN
MOE_RL:
N9BC
PICA:
GX
DSOR:
User:
BRAZIL Brazil
MOE_CD:
YA
MOE_RL:
YA01
PICA:
YA
DSOR:
User:
SPAIN Spain
MOE_CD:
YB
MOE_RL:
YB01
PICA:
YB
DSOR:
User:
TURKEY Turkey
MOE_CD:
ZW
MOE_RL:
ZW01
PICA:
ZW
DSOR:
Part Identification
INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22113
FIIG:
A15500
Concept No.:
App. Key:
A
Cond. Code:
2
Status:
A
Material and Special Handling
Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
---
CRITL:
X
Hazmat (HMIC): N
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
Precious Metals (PMIC): U
Precious metal content is unknown
Criticality (CRITL): X
The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Packaging and Dimensions
Package Size
Package Weight
Part Weight
Part Dimensions (approx.)
Pack Size:
--
Pack Weight:
0.2000lbs
Item Weight:
--
Item Dim:
--
Container
OPI
SPI No.
SPI Rev.
Container:
A1
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg.
LVL A
LVL B
LVL C
SPC Mkg.:
00
LVL A:
Q
LVL B:
Q
LVL C:
CUSH
MOP
CATEG.
PRESS MAT
CUSH:
00
MOP:
10
CATEG.:
16Z0
PRESS MAT:
00
WRAP MAT
ICQ
THK
TOS
UCL
WRAP MAT:
XX
ICQ:
AAA
THK:
0
TOS:
UCL:
Packaging Code Definitions
LVL A Code (LVL_A):Q
Packing shall be accomplished in accordance with table c.Ii for the packing level specified. closure, sealing and reinforcement shall be in accordance with applicable specification for shipping container.
LVL B Code (LVL_B): Q
Packing shall be accomplished in accordance with table c.Ii for the packing level specified. closure, sealing and reinforcement shall be in accordance with the appropriate shipping container specification.
Procedure Indicator Code (OPI): O
Options can be exercised as to specific method of preservation or dod approved packaging materials to be used. however, basic preservation method shall be retained, supplemental data shall be complied with, and unit package dimensions shall not be increased by more than one inch. equal or better protection shall be given the item and there shall be no increase in the package cost.
Special Markings Code (SPC MKG): 00
No special marking.
Method of Preservation (MOP): 10
Physical protection.
Cushion Material (CUSH): 00
No requirement.
Preservation Material (PRESS MAT): 00
No requirement.