Seat and Support, Valve4820-00-145-4685

NSN 4820-00-145-4685 · NIIN 001454685

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-00-145-4685 · 4820001454685 · NIIN 001454685 · 00-145-4685 · FSC 4820 Valves, Nonpowered · 176482-0001 · 176472-2AND176482-1 · 176472-1AND1764

Nearby stock numbers ← 4820-00-145-4259 Valve, Gate · 4820-00-145-4771 Seat, Valve →

4820-00-145-4685 — Valves, Nonpowered

Features

Seat and Support,valve — FSC 4820
General Characteristics Item Description: NYLON SEAT CRES SUPPORT,0.509 IN. MIN,0.510 IN. MAX OD,0.1505 IN. MIN,0.1515 IN. MAX ID,0.171 IN. MIN,0.181 IN. MAX THK SUPPORT 0.386 IN. MIN,0.388 IN. MAX OD,0.149 IN. MIN,0.150 IN. MAX ID,0.044 IN. MIN,0.046 IN. MAX THK SEAT IN

Identification

NSN: 4820-00-145-4685
NIIN: 001454685
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Seat and Support,valve, cataloged under National Stock Number 4820-00-145-4685, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-00-145-4685
Item Name	Seat and Support,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
General Characteristics Item Description	NYLON SEAT CRES SUPPORT,0.509 IN. MIN,0.510 IN. MAX OD,0.1505 IN. MIN,0.1515 IN. MAX ID,0.171 IN. MIN,0.181 IN. MAX THK SUPPORT 0.386 IN. MIN,0.388 IN. MAX OD,0.149 IN. MIN,0.150 IN. MAX ID,0.044 IN. MIN,0.046 IN. MAX THK SEAT IN

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
176482-0001	3/2 Design control — primary reference U.S. Government activity
176472-2AND176482-1	5/9 Secondary reference U.S. Government activity
176472-1AND1764	C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity

No interchangeability data on file.

Other items in FSC 4820 — Valves, Nonpowered

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4820-00-000-0097

4820-00-000-0097 · Item name not on file

4820-00-001-0010

VALVE,ROTARY,SELECTOR

4820-00-001-0020

4820-00-001-0020 · Item name not on file

4820-00-001-0021

4820-00-001-0021 · Item name not on file

4820-00-001-0032

4820-00-001-0032 · Item name not on file

4820-00-001-0037

VALVE,SAFETY RELIEF

4820-00-001-0042

4820-00-001-0042 · Item name not on file

4820-00-001-1230

4820-00-001-1230 · Item name not on file

Frequently Asked Questions

What is NSN 4820-00-145-4685?

NSN 4820-00-145-4685 is a Seat and Support,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.

What are the specifications of 4820-00-145-4685?

Key specifications for 4820-00-145-4685: General Characteristics Item Description: NYLON SEAT CRES SUPPORT,0.509 IN. MIN,0.510 IN. MAX OD,0.1505 IN. MIN,0.1515 IN. MAX ID,0.171 IN. MIN,0.181 IN. MAX THK SUPPORT 0.386 IN. MIN,0.388 IN. MAX OD,0.149 IN. MIN,0.150 IN. MAX ID,0.044 IN. MIN,0.046 IN. MAX THK SEAT IN. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-00-145-4685 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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