Boot, Spring Assembly Override Se1680-00-236-4091

NSN 1680-00-236-4091 · NIIN 002364091 · Part number B4381

Kirkhill, Inc. Dba Kirkhill Inc · FSC 1680 — Miscellaneous Aircraft Accessories and Components · FSG 16 — Aircraft Components and Accessories · CAGE 75345

Government record, cited

NSN 1680-00-236-4091 — this item is cataloged by the U.S. Government under National Stock Number 1680-00-236-4091. Manufacturer of record part number: B4381.

Also searched as 1680-00-236-4091 · 1680002364091 · NIIN 002364091 · 00-236-4091 · FSC 1680 Miscellaneous Aircraft Accessories and Components · CAGE 75345 · B4381

Nearby stock numbers ← 1680-00-236-4090 Control Assy, Vertic · 1680-00-236-4092 Boot, Feel Spring, Ru →

Features

Boot,spring Assembly Override Se — FSC 1680
1 manufacturer part number on file
Manufacturer of record: Kirkhill, Inc. Dba Kirkhill Inc

Identification

NSN: 1680-00-236-4091
NIIN: 002364091
FSC: 1680 — Miscellaneous Aircraft Accessories and Components
FSG: 16 — Aircraft Components and Accessories
Primary part number: B4381
Manufacturer: Kirkhill, Inc. Dba Kirkhill Inc

General Description

The Boot,spring Assembly Override Se, cataloged under National Stock Number 1680-00-236-4091, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Kirkhill, Inc. Dba Kirkhill Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	1680-00-236-4091
Primary Part Number	B4381
Item Name	Boot,spring Assembly Override Se
FSC / FSG	1680 / 16 — Miscellaneous Aircraft Accessories and Components
Manufacturer	Kirkhill, Inc. Dba Kirkhill Inc
Status	ACTIVE

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

⇄ Related Items 1

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

5945-00-518-9971D0SX9T POSSIBLE MATCH

RELAY,ELECTROMAGNETIC

Possible match (shared part number)Ohmite Holding, L.l.c. Dba Ohmite Manufacturing

Cross-Reference Index

Part Number	Manufacturer
B4381 PRIMARY	Kirkhill, Inc. Dba Kirkhill Inc (USA)

Related Parts

5945-00-518-9971POSSIBLE MATCH

RELAY,ELECTROMAGNETIC

D0SX9T

Frequently Asked Questions

What is NSN 1680-00-236-4091?

NSN 1680-00-236-4091 is a Boot,spring Assembly Override Se, manufactured by Kirkhill, Inc. Dba Kirkhill Inc, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.

What part numbers are listed for NSN 1680-00-236-4091?

NSN 1680-00-236-4091 has 1 manufacturer part number on file: B4381 (Kirkhill, Inc. Dba Kirkhill Inc).

What NSN replaces 1680-00-236-4091?

1 possible match (shared part number, not a government interchangeability claim): 5945-00-518-9971. Verify interchangeability with system specifications before substitution.

What are the specifications of B4381?

Key specifications for B4381: End Item Identification: U/O PART NUMBER 4C52978-101B,SPRING ASSEMBLY,OVERRIDE,SERV0 RUDDER-C5 AIRCRAFT. 0 specifications are documented in the U.S. Government catalog.

Is NSN 1680-00-236-4091 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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