PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

91-21Parts Kit,linear Actuating Cylin

Hader-Seitz Inc · NSN 3040-01-188-1263 · FSC 3040 · No Item Name Available
Verified by PartsTable
NSN 3040-01-188-1263 — this item is cataloged by the U.S. Government under National Stock Number 3040-01-188-1263. Primary manufacturer part number: 91-21.
Features
  • Parts Kit,linear Actuating Cylin — FSC 3040
  • Component Quantity: 7
  • Supply Items and Quantities: SEAL 1; WIPER 1; O-RING 3; BACK-UP RING 2
  • 2 verified cross-references
  • Primary manufacturer: Hader-Seitz Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Parts Kit,linear Actuating Cylin, cataloged under National Stock Number 3040-01-188-1263, is classified within Federal Supply Class 3040 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Hader-Seitz Inc. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3040-01-188-1263
Primary Part Number91-21
Item NameParts Kit,linear Actuating Cylin
FSC / FSG3040 / 30 — No Item Name Available
ManufacturerHader-Seitz Inc
StatusACTIVE
Component Quantity7
Supply Items and QuantitiesSEAL 1; WIPER 1; O-RING 3; BACK-UP RING 2
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-100-05069121 INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
5935-00-201-7059 INTERCHANGEABLE
Connector,plug,electrical
5930-00-409-548210689632-2 INTERCHANGEABLE
Switch,toggle
Us Army Aviation and Missile Command
3110-00-548-2268214-040-102-1 INTERCHANGEABLE
Bearing,planetary S
Skf Usa Inc.
5340-00-598-38178198493 INTERCHANGEABLE
Bumper
Us Army Aviation and Missile Command
5365-00-727-9012 INTERCHANGEABLE
Spacer,sleeve
5950-01-101-4598009-048-021 INTERCHANGEABLE
Coil,radio Frequency
Meggitt Safety Systems Inc
3120-01-126-10899121 INTERCHANGEABLE
Bushing,sleeve
Hme, Inc. Dba Hme Ahrens-Fox
5805-01-154-8919 INTERCHANGEABLE
Telephone Terminal Subassembly
5940-01-310-96249121 INTERCHANGEABLE
Terminal Board
Hose-Mccann Telephone Co, Inc
Cross-Reference Index
Part NumberManufacturer
91-21 PRIMARY Hader-Seitz Inc (USA)
1045Z1240 Morris Material Handling, Inc. (USA)
Related Parts
3110-00-100-0506INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
9121
5935-00-201-7059INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
5930-00-409-5482INTERCHANGEABLE
SWITCH,TOGGLE
10689632-2
3110-00-548-2268INTERCHANGEABLE
BEARING,PLANETARY S
214-040-102-1
5340-00-598-3817INTERCHANGEABLE
BUMPER
8198493
5365-00-727-9012INTERCHANGEABLE
SPACER,SLEEVE
5950-01-101-4598INTERCHANGEABLE
COIL,RADIO FREQUENCY
009-048-021
3120-01-126-1089INTERCHANGEABLE
BUSHING,SLEEVE
9121
5805-01-154-8919INTERCHANGEABLE
TELEPHONE TERMINAL SUBASSEMBLY
5940-01-310-9624INTERCHANGEABLE
TERMINAL BOARD
9121
3432-01-315-9242INTERCHANGEABLE
WELDING MACHINE,RESISTANCE
9121
2510-01-332-1360INTERCHANGEABLE
AIR SPRING,VEHICULAR
90557052

Frequently Asked Questions

What is NSN 3040-01-188-1263?

NSN 3040-01-188-1263 is a Parts Kit,linear Actuating Cylin, manufactured by Hader-Seitz Inc, classified under FSC 3040 (No Item Name Available). Status: active.

What are the part numbers for NSN 3040-01-188-1263?

NSN 3040-01-188-1263 has 2 cross-referenced part numbers: 91-21 (Hader-Seitz Inc), 1045Z1240 (Morris Material Handling, Inc.).

What NSN replaces 3040-01-188-1263?

There are 12 known substitutes for 3040-01-188-1263: 3110-00-100-0506, 5935-00-201-7059, 5930-00-409-5482 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 91-21?

Key specifications for 91-21: Component Quantity: 7; Supply Items and Quantities: SEAL 1; WIPER 1; O-RING 3; BACK-UP RING 2. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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