Retainer, Spring1620-01-081-6978

NSN 1620-01-081-6978 · NIIN 010816978

FSC 1620 — Aircraft Landing Gear Components · FSG 16 — Aircraft Components and Accessories

Government record, cited

Also searched as 1620-01-081-6978 · 1620010816978 · NIIN 010816978 · 01-081-6978 · FSC 1620 Aircraft Landing Gear Components

Nearby stock numbers ← 1620-01-081-6018 · 1620-01-081-6979 Plate, Brake Release →

Features

Retainer,spring — FSC 1620
General Characteristics Item Description: 4130 STEEL PER MIL-S-18729 CAD PLATE FINISH PER QQ-P-416 CLASS 2,TYPE 2; 1.980 IN. MAX OVERALL O.D. 0.830 IN. THK; 1ST END 1.620 IN. O.D. 0.645 IN. MAX I.D.; 2ND END 0.720 IN. MAX O.D.0.645 IN. MAX I.D.; PART OF CLUTCH ASSEMBLY NOSE LANDING GEAR IN

Identification

NSN: 1620-01-081-6978
NIIN: 010816978
FSC: 1620 — Aircraft Landing Gear Components
FSG: 16 — Aircraft Components and Accessories

General Description

The Retainer,spring, cataloged under National Stock Number 1620-01-081-6978, is classified within Federal Supply Class 1620 (Aircraft Landing Gear Components) of the Aircraft Components and Accessories group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	1620-01-081-6978
Item Name	Retainer,spring
FSC / FSG	1620 / 16 — Aircraft Landing Gear Components
Status	ACTIVE
General Characteristics Item Description	4130 STEEL PER MIL-S-18729 CAD PLATE FINISH PER QQ-P-416 CLASS 2,TYPE 2; 1.980 IN. MAX OVERALL O.D. 0.830 IN. THK; 1ST END 1.620 IN. O.D. 0.645 IN. MAX I.D.; 2ND END 0.720 IN. MAX O.D.0.645 IN. MAX I.D.; PART OF CLUTCH ASSEMBLY NOSE LANDING GEAR 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
42292D39	3/2 Design control — primary reference U.S. Government activity

No interchangeability data on file.

Other items in FSC 1620 — Aircraft Landing Gear Components

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

1620-00-491-0877

STRIKER,MICRO SWITCH

1620-00-491-0877

STRIKER,MICRO SWITCH

1620-00-699-0282

PISTON,CRANK AND LI

1620-00-718-6770

PISTON,FLOATING

1620-00-718-6770

PISTON,FLOATING

1620-00-736-1020

ROD,LATCH,SHORTENIN

1620-00-736-1020

ROD,LATCH,SHORTENIN

1620-00-756-9181

FITTING,STACK,TUBE

Frequently Asked Questions

What is NSN 1620-01-081-6978?

NSN 1620-01-081-6978 is a Retainer,spring, classified under FSC 1620, Aircraft Landing Gear Components. Status: active.

What are the specifications of 1620-01-081-6978?

Key specifications for 1620-01-081-6978: General Characteristics Item Description: 4130 STEEL PER MIL-S-18729 CAD PLATE FINISH PER QQ-P-416 CLASS 2,TYPE 2; 1.980 IN. MAX OVERALL O.D. 0.830 IN. THK; 1ST END 1.620 IN. O.D. 0.645 IN. MAX I.D.; 2ND END 0.720 IN. MAX O.D.0.645 IN. MAX I.D.; PART OF CLUTCH ASSEMBLY NOSE LANDING GEAR IN; End Item Identification: C5A ACFT. 1 specification is documented in the U.S. Government catalog.

Is NSN 1620-01-081-6978 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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