Retainer, Gasket4820-01-217-4907

NSN 4820-01-217-4907 · NIIN 012174907

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-217-4907 · 4820012174907 · NIIN 012174907 · 01-217-4907 · FSC 4820 Valves, Nonpowered · 83553-78X5 · 83553-78X5 PIECE 3 · 2472789PC3 · 2472789

Nearby stock numbers ← 4820-01-217-4906 Retainer, Disk, Valve · 4820-01-217-4926 Stem, Fluid Valve →

4820-01-217-4907 — Valves, Nonpowered

Features

Retainer,gasket — FSC 4820
General Characteristics Item Description: COPPER ALLOY MIL-B-21230; 12.750 IN. DIA BOLT CIRCLE; 12.002 IN. ID;18 HOLES CSK 82 DEG,0.520 IN. DEPTH IN

Identification

NSN: 4820-01-217-4907
NIIN: 012174907
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Retainer,gasket, cataloged under National Stock Number 4820-01-217-4907, 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1 specification, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	4820-01-217-4907
Item Name	Retainer,gasket
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
General Characteristics Item Description	COPPER ALLOY MIL-B-21230; 12.750 IN. DIA BOLT CIRCLE; 12.002 IN. ID;18 HOLES CSK 82 DEG,0.520 IN. DEPTH 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
83553-78X5	D/9 Drawing number reference only U.S. Government activity
83553-78X5 PIECE 3	3/2 Design control — primary reference U.S. Government activity
2472789PC3	5/2 Secondary reference U.S. Government activity
2472789	D/9 Drawing number reference only 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 4820-01-217-4907?

NSN 4820-01-217-4907 is a Retainer,gasket, classified under FSC 4820, Valves, Nonpowered. Status: active.

What are the specifications of 4820-01-217-4907?

Key specifications for 4820-01-217-4907: General Characteristics Item Description: COPPER ALLOY MIL-B-21230; 12.750 IN. DIA BOLT CIRCLE; 12.002 IN. ID;18 HOLES CSK 82 DEG,0.520 IN. DEPTH IN. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-01-217-4907 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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