Piston, Linear Actuating Cylinder3040-01-311-3950

NSN 3040-01-311-3950 · NIIN 013113950 · Part number 8-691

Hader-Seitz Inc · FSC 3040 — Miscellaneous Power Transmission Equipment · FSG 30 — Mechanical Power Transmission Equipment · CAGE 14108

Government record, cited

NSN 3040-01-311-3950 — this item is cataloged by the U.S. Government under National Stock Number 3040-01-311-3950. Manufacturer of record part number: 8-691.

Also searched as 3040-01-311-3950 · 3040013113950 · NIIN 013113950 · 01-311-3950 · FSC 3040 Miscellaneous Power Transmission Equipment · CAGE 14108 · 8-691

Nearby stock numbers ← 3040-01-311-3949 Lever, Manual Control · 3040-01-311-3962 Hub, Body →

Features

Piston,linear Actuating Cylinder — FSC 3040
1 manufacturer part number on file
Manufacturer of record: Hader-Seitz Inc

Identification

NSN: 3040-01-311-3950
NIIN: 013113950
FSC: 3040 — Miscellaneous Power Transmission Equipment
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 8-691
Manufacturer: Hader-Seitz Inc

General Description

The Piston,linear Actuating Cylinder, cataloged under National Stock Number 3040-01-311-3950, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Hader-Seitz 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	3040-01-311-3950
Primary Part Number	8-691
Item Name	Piston,linear Actuating Cylinder
FSC / FSG	3040 / 30 — Miscellaneous Power Transmission Equipment
Manufacturer	Hader-Seitz 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.

1680-01-526-66138691 POSSIBLE MATCH

ACTUATOR,ELECTROMECHANICAL,ROTAR

Possible match (shared part number)Cef Industries, Llc Dba Cef Industries Inc

Cross-Reference Index

Part Number	Manufacturer
8-691 PRIMARY	Hader-Seitz Inc (USA)

Related Parts

1680-01-526-6613POSSIBLE MATCH

ACTUATOR,ELECTROMECHANICAL,ROTAR

8691

Frequently Asked Questions

What is NSN 3040-01-311-3950?

NSN 3040-01-311-3950 is a Piston,linear Actuating Cylinder, manufactured by Hader-Seitz Inc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.

What part numbers are listed for NSN 3040-01-311-3950?

NSN 3040-01-311-3950 has 1 manufacturer part number on file: 8-691 (Hader-Seitz Inc).

What NSN replaces 3040-01-311-3950?

1 possible match (shared part number, not a government interchangeability claim): 1680-01-526-6613. Verify interchangeability with system specifications before substitution.

What are the specifications of 8-691?

Key specifications for 8-691: Special Features: USED IN CYLINDER W/6.500 IN.BORE,4.000 IN.DIA ROD,3.250 IN.STROKE IN. 0 specifications are documented in the U.S. Government catalog.

Is NSN 3040-01-311-3950 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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