Catalog › Instruments and Laboratory Equipment › FSC 6650 › 6650-00-768-8718

Optical Instrument Lens P/N 7688718

In stock — 89 on our U.S. shelf

NSN 6650-00-768-8718 6650007688718 NIIN 007688718

SECO Parts has 89 in stock of NSN 6650-00-768-8718 — Optical Instrument Lens — on our own shelf in Augusta, GA: a stocking supplier, not a broker.

Export-controlled item (DEMIL B) — U.S. domestic sale only. Quote only: an end-use statement is required.

Request a quote — end-use statement required

Quotes answered within one business day once the end-use statement is reviewed.

Certificate of Conformance on request
PO, GPC & major cards
$50 minimum order — smaller requests still get a quote
30-day returns · terms

FLIS item name: LENS,OPTICAL INSTRUMENT
SECO description: LENS,OPTICAL INSTRU
Federal supply class: FSC 6650 — Optical Instruments, Test Equipment, Components and Accessories

Availability & condition

Condition	Code	Qty on shelf
New Surplus	NS	89
Total		89

Quantities are live from SECO's inventory system, not estimated.

Also known as: 6650-00-768-8718 007688718 7688718

Get a quote

Build a list across as many parts as you need, send it once, get one quote back — answered within one business day, usually the same day. POs and GPC welcome. $50 minimum order.

Controlled item. Quote only — no online checkout. Your request must include the end user, the end use, and a U.S.-person certification; SECO reviews each request before quoting.

More to tell us? Need-by date, ship-to, your own RFQ document

Specifications

Fsc application data: Periscope,Tank
Element left surface radius: Inches 1.575
Material: Glass Optical
Material document and classification: MIL Spec 1ST Material Response -IL-G-174,Class 1,Grade C,Tye 511-635 and MIL Spec 2ND Material Response -IL-G-174,Class 1,Grade C,Tye 720-293
Axial thickness: Inches Minimum 0.108 and Inches Maximum 0.128 and Inches Minimum 0.384 and Inches Maximum 0.404
Compound lens overall axial thickness: 0.492–0.532 in
Element right surface radius: Inches 1.087
Special features: Front and Back Surfaces Coated with Magnesium Fluoride. All Edges Chamfered 0.020 In. Min. BY 45 Deg. Rim and Chamfers Ground.
Refraction index: Nominal 1.5110 and Nominal 1.7200
Compound lens edge thickness: 0.469 in (nominal)
Diameter: 1.062–1.065 in
Equivalent focal length: Inches 35.620
Abbe constant: 63.500 and 29.300

From the federal catalog's item characteristics for this NSN. Confirm critical dimensions against your part or drawing before ordering.

Cross-reference part numbers

7688718

Shown for identification only. SECO can quote against any of these numbers.

Logistics data

Demilitarization code	B Export-controlled (USML) — U.S. domestic sale only
Hazardous material indicator	N No hazardous material

Source: public FLIS/PUB LOG cataloging data.

Why buy from SECO

These quantities sit on our own shelves — we are a stocking supplier, not a broker sourcing after you order. Condition-coded stock, formal quotes with NSN/PN on the paperwork, POs and GPC welcome, fast U.S. shipping.

In business since 1951 · 30,000+ contracts completed · about SECO & our policies · more questions answered

FAQ

What is NSN 6650-00-768-8718?
NSN 6650-00-768-8718 (6650007688718) — Optical Instrument Lens: SECO Parts has 89 in stock in Augusta, GA, on our own shelf. It is the NATO Stock Number for optical instrument lens in federal supply class 6650 (Optical Instruments, Test Equipment, Components and Accessories).

Is NSN 6650-00-768-8718 available?
SECO Parts has 89 in stock in Augusta, GA. This is a controlled item: it is sold by quote only with an end-use statement, to U.S. domestic customers.

How much does NSN 6650-00-768-8718 cost?
SECO quotes NSN 6650-00-768-8718 on request, usually the same business day.

What part numbers cross-reference to NSN 6650-00-768-8718?
Part numbers that cross-reference this NSN include 7688718. SECO can quote against any of them.