Arm Assembly, Sight1270-01-021-3893

NSN 1270-01-021-3893 · NIIN 010213893

FSC 1270 — Aircraft Gunnery Fire Control Components · FSG 12 — Fire Control Equipment

Government record, cited

Also searched as 1270-01-021-3893 · 1270010213893 · NIIN 010213893 · 01-021-3893 · FSC 1270 Aircraft Gunnery Fire Control Components

Nearby stock numbers ← 1270-01-021-3051 · 1270-01-021-3894 →

Features

Arm Assembly,sight — FSC 1270
General Characteristics Item Description: ALUMINUM,QQ-A-250/11

Identification

NSN: 1270-01-021-3893
NIIN: 010213893
FSC: 1270 — Aircraft Gunnery Fire Control Components
FSG: 12 — Fire Control Equipment

General Description

The Arm Assembly,sight, cataloged under National Stock Number 1270-01-021-3893, is classified within Federal Supply Class 1270 (Aircraft Gunnery Fire Control Components) of the Fire Control Equipment 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1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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	1270-01-021-3893
Item Name	Arm Assembly,sight
FSC / FSG	1270 / 12 — Aircraft Gunnery Fire Control Components
Status	ACTIVE
General Characteristics Item Description	ALUMINUM,QQ-A-250/11

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL B — Remove Demilitarization Key Points
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

⇄ Related Items 2

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

5305-01-180-897752690 POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

Possible match (shared part number)Parker Hannifin Corporation Div Hydraulic Systems Division

5340-01-506-34925269-0 POSSIBLE MATCH

PLUG,PROTECTIVE,DUST AND MOISTUR

Possible match (shared part number)Hubbell Corp

Cross-Reference Index

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

Reference documents

Reference	Meaning
52690	3/9 Design control — primary reference U.S. Government activity

Related Parts

5305-01-180-8977POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

52690

5340-01-506-3492POSSIBLE MATCH

PLUG,PROTECTIVE,DUST AND MOISTUR

5269-0

Frequently Asked Questions

What is NSN 1270-01-021-3893?

NSN 1270-01-021-3893 is a Arm Assembly,sight, classified under FSC 1270, Aircraft Gunnery Fire Control Components. Status: active.

What NSN replaces 1270-01-021-3893?

2 possible matches (shared part number, not a government interchangeability claim): 5305-01-180-8977, 5340-01-506-3492. Verify interchangeability with system specifications before substitution.

What are the specifications of 1270-01-021-3893?

Key specifications for 1270-01-021-3893: General Characteristics Item Description: ALUMINUM,QQ-A-250/11. 1 specification is documented in the U.S. Government catalog.

Is NSN 1270-01-021-3893 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.

What is the DEMIL code for NSN 1270-01-021-3893?

NSN 1270-01-021-3893 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.

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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