PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

0112Ring,erector Diaphragm

Unertl John Optical Co Inc · NSN 1240-01-459-8574 · FSC 1240 · No Item Name Available
Verified by PartsTable
NSN 1240-01-459-8574 — this item is cataloged by the U.S. Government under National Stock Number 1240-01-459-8574. Primary manufacturer part number: 0112.
Features
  • Ring,erector Diaphragm — FSC 1240
  • 1 verified cross-reference
  • Primary manufacturer: Unertl John Optical Co Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ring,erector Diaphragm, cataloged under National Stock Number 1240-01-459-8574, is classified within Federal Supply Class 1240 (No Item Name Available) of the Fire Control Equipment group. The primary manufacturer of record is Unertl John Optical Co Inc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1240-01-459-8574
Primary Part Number0112
Item NameRing,erector Diaphragm
FSC / FSG1240 / 12 — No Item Name Available
ManufacturerUnertl John Optical Co Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
4720-00-134-9095 INTERCHANGEABLE
Tubing,nonmetallic
3610-00-256-0170 INTERCHANGEABLE
Paper,masking,photolithographic
8030-00-882-7073 INTERCHANGEABLE
Gasket Forming Compound
3950-00-889-8722HST3APPACL1OR2TYA INTERCHANGEABLE
Hoist,chain
The American Society of Mechanical Engineers
4540-01-272-37630112 INTERCHANGEABLE
Heat Element
Honeywell Ltdaerospace Div
6750-01-383-7455 INTERCHANGEABLE
Paper,photographic
Cross-Reference Index
Part NumberManufacturer
0112 PRIMARY Unertl John Optical Co Inc (USA)
Related Parts
4720-00-134-9095INTERCHANGEABLE
TUBING,NONMETALLIC
3610-00-256-0170INTERCHANGEABLE
PAPER,MASKING,PHOTOLITHOGRAPHIC
8030-00-882-7073INTERCHANGEABLE
GASKET FORMING COMPOUND
3950-00-889-8722INTERCHANGEABLE
HOIST,CHAIN
HST3APPACL1OR2TYA
4540-01-272-3763INTERCHANGEABLE
HEAT ELEMENT
0112
6750-01-383-7455INTERCHANGEABLE
PAPER,PHOTOGRAPHIC

Frequently Asked Questions

What is NSN 1240-01-459-8574?

NSN 1240-01-459-8574 is a Ring,erector Diaphragm, manufactured by Unertl John Optical Co Inc, classified under FSC 1240 (No Item Name Available). Status: active.

What are the part numbers for NSN 1240-01-459-8574?

NSN 1240-01-459-8574 has 1 cross-referenced part number: 0112 (Unertl John Optical Co Inc).

What NSN replaces 1240-01-459-8574?

There are 6 known substitutes for 1240-01-459-8574: 4720-00-134-9095, 3610-00-256-0170, 8030-00-882-7073 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 0112?

Key specifications for 0112: Overall Length: 0.600 INCHES NOMINAL IN; End Item Identification: SNIPER SCOPE, MODEL C3. 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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