PartsTable TECHNICAL DATA SHEET

NSN 4820-01-034-3683Government record, cited

Ring, Doubler4820-01-034-3683

NSN 4820-01-034-3683 · NIIN 010343683 · Part number 751961-1

Hamilton Sundstrand Corporation Dba Collins Aerospace · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 73030

Government record, cited

NSN 4820-01-034-3683 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-034-3683. Manufacturer of record part number: 751961-1.

Also searched as 4820-01-034-3683 · 4820010343683 · NIIN 010343683 · 01-034-3683 · FSC 4820 Valves, Nonpowered · CAGE 73030 · 751961-1

Nearby stock numbers ← 4820-01-034-3682 Spring · 4820-01-034-3684 Crank →

4820-01-034-3683 — Valves, Nonpowered

Features

Ring,doubler — FSC 4820
General Characteristics Item Description: CRES AMS5512,3.140 IN. O/D,2.315 IN. MIN. 2.325 IN. MAX. I/D,7.0 0.186 IN. MIN. 0.193 IN. MAX. DIA. HOLES EQUALLY SPACED ON A 2.680 IN. DIA. BC,0.420 SPACE IN RING,0.054 IN. MIN. 0.066 IN. MAX. THK IN
1 manufacturer part number on file
Manufacturer of record: Hamilton Sundstrand Corporation Dba Collins Aerospace

Identification

NSN: 4820-01-034-3683
NIIN: 010343683
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 751961-1
Manufacturer: Hamilton Sundstrand Corporation Dba Collins Aerospace

General Description

The Ring,doubler, cataloged under National Stock Number 4820-01-034-3683, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-034-3683
Primary Part Number	751961-1
Item Name	Ring,doubler
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Hamilton Sundstrand Corporation Dba Collins Aerospace
Status	ACTIVE
General Characteristics Item Description	CRES AMS5512,3.140 IN. O/D,2.315 IN. MIN. 2.325 IN. MAX. I/D,7.0 0.186 IN. MIN. 0.193 IN. MAX. DIA. HOLES EQUALLY SPACED ON A 2.680 IN. DIA. BC,0.420 SPACE IN RING,0.054 IN. MIN. 0.066 IN. MAX. THK 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

Part Number	Manufacturer
751961-1 PRIMARY	Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)

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 4820-01-034-3683?

NSN 4820-01-034-3683 is a Ring,doubler, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-034-3683?

NSN 4820-01-034-3683 has 1 manufacturer part number on file: 751961-1 (Hamilton Sundstrand Corporation Dba Collins Aerospace).

What are the specifications of 751961-1?

Key specifications for 751961-1: General Characteristics Item Description: CRES AMS5512,3.140 IN. O/D,2.315 IN. MIN. 2.325 IN. MAX. I/D,7.0 0.186 IN. MIN. 0.193 IN. MAX. DIA. HOLES EQUALLY SPACED ON A 2.680 IN. DIA. BC,0.420 SPACE IN RING,0.054 IN. MIN. 0.066 IN. MAX. THK IN; End Item Identification: ACFT F5F. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-01-034-3683 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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