PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11115Window,sight Tube

Hdt Expeditionary Systems Inc · NSN 4520-00-330-4270 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-00-330-4270 — this item is cataloged by the U.S. Government under National Stock Number 4520-00-330-4270. Primary manufacturer part number: 11115.
Features
  • Window,sight Tube — FSC 4520
  • General Characteristics Item Description: SREC-DD-G 451A CLEAR GLASS OR EQUIVALENT,0.438IN O/A DIA,0.125 IN THICK A
  • 2 verified cross-references
  • Primary manufacturer: Hdt Expeditionary Systems Inc
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Window,sight Tube, cataloged under National Stock Number 4520-00-330-4270, is classified within Federal Supply Class 4520 (No Item Name Available) of the Plumbing, Heating, and Waste Disposal group. The primary manufacturer of record is Hdt Expeditionary Systems Inc. Government technical data includes 1 verified specification, 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: Cancelled.

Technical Specifications
ParameterValue
NSN4520-00-330-4270
Primary Part Number11115
Item NameWindow,sight Tube
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerHdt Expeditionary Systems Inc
StatusCANCELLED
General Characteristics Item DescriptionSREC-DD-G 451A CLEAR GLASS OR EQUIVALENT,0.438IN O/A DIA,0.125 IN THICK A
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
1650-00-027-53741111-5 INTERCHANGEABLE
Parts Kit,linear Actuating Cylin
The Boeing Company Div Defense
5331-00-050-1224250S13 INTERCHANGEABLE
O-Ring
Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St)
5110-00-234-1949 INTERCHANGEABLE
Chisel,cold,hand
5945-00-491-9140 INTERCHANGEABLE
Relay,solid State
6350-00-504-0386 INTERCHANGEABLE
Diaphragm,horn
5331-00-579-7916MS28775-115 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5340-00-598-772011115 INTERCHANGEABLE
Cup,compression
Hein Werner Corp
1650-00-650-76101111-5 INTERCHANGEABLE
Cylinder Assembly,actuating,line
Parker Hannifin Corporation Div Hydraulic Systems Division
1650-00-925-3280111-15 INTERCHANGEABLE
Parts Kit,constant Speed Drive
Hamilton Sundstrand Corporation
5130-01-151-915311-115 INTERCHANGEABLE
Etcher,electric
Ideal Industries, Inc.
Cross-Reference Index
Part NumberManufacturer
11115 PRIMARY Hdt Expeditionary Systems Inc (USA)
G1-12040 Evans Tempcon Michigan, Llc (USA)
Related Parts
1650-00-027-5374INTERCHANGEABLE
PARTS KIT,LINEAR ACTUATING CYLIN
1111-5
5331-00-050-1224INTERCHANGEABLE
O-RING
250S13
5110-00-234-1949INTERCHANGEABLE
CHISEL,COLD,HAND
5945-00-491-9140INTERCHANGEABLE
RELAY,SOLID STATE
6350-00-504-0386INTERCHANGEABLE
DIAPHRAGM,HORN
5331-00-579-7916INTERCHANGEABLE
O-RING
MS28775-115
5340-00-598-7720INTERCHANGEABLE
CUP,COMPRESSION
11115
1650-00-650-7610INTERCHANGEABLE
CYLINDER ASSEMBLY,ACTUATING,LINE
1111-5
1650-00-925-3280INTERCHANGEABLE
PARTS KIT,CONSTANT SPEED DRIVE
111-15
5130-01-151-9153INTERCHANGEABLE
ETCHER,ELECTRIC
11-115
3020-01-317-2821INTERCHANGEABLE
GEAR,WORM
5930-01-474-2863INTERCHANGEABLE
SWITCH,INTERLOCK
11115

Frequently Asked Questions

What is NSN 4520-00-330-4270?

NSN 4520-00-330-4270 is a Window,sight Tube, manufactured by Hdt Expeditionary Systems Inc, classified under FSC 4520 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4520-00-330-4270?

NSN 4520-00-330-4270 has 2 cross-referenced part numbers: 11115 (Hdt Expeditionary Systems Inc), G1-12040 (Evans Tempcon Michigan, Llc).

What NSN replaces 4520-00-330-4270?

There are 12 known substitutes for 4520-00-330-4270: 1650-00-027-5374, 5331-00-050-1224, 5110-00-234-1949 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11115?

Key specifications for 11115: General Characteristics Item Description: SREC-DD-G 451A CLEAR GLASS OR EQUIVALENT,0.438IN O/A DIA,0.125 IN THICK A. 1 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4520-00-330-4270 still in active supply?

NSN 4520-00-330-4270 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com